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General Contractor · Developer · Project Manager · Consultant · Ontario

Build With
Confidence
Across Ontario

Ontario's trusted general contractor for commercial, industrial, multi-residential, data centre, and infrastructure projects. Serving Toronto, Simcoe County, the GTA, and every corner of the province — on time, on budget.

30+
Years of Experience
Tier III & IV
Data Centre Standards
Ontario
Province-Wide Service
Commercial Construction OntarioIndustrial Facility ConstructionInfrastructure Project ManagementMulti-Residential Development OntarioData Centre Construction OntarioSimcoe County & Province-WideEU-GMP Certified FacilitiesLEED & NetZero DesignTier III & IV Data Centres Commercial Construction OntarioIndustrial Facility ConstructionInfrastructure Project ManagementMulti-Residential Development OntarioData Centre Construction OntarioSimcoe County & Province-WideEU-GMP Certified FacilitiesLEED & NetZero DesignTier III & IV Data Centres
Commercial Construction OntarioIndustrial Facility ConstructionInfrastructure Project ManagementMulti-Residential Development OntarioData Centre Construction OntarioSimcoe County & Province-WideEU-GMP Certified FacilitiesLEED & NetZero DesignTier III & IV Data Centres Commercial Construction OntarioIndustrial Facility ConstructionInfrastructure Project ManagementMulti-Residential Development OntarioData Centre Construction OntarioSimcoe County & Province-WideEU-GMP Certified FacilitiesLEED & NetZero DesignTier III & IV Data Centres
Terrahills Developments general contracting and ICI project management Ontario Infrastructure and site servicing construction Ontario — roads, utilities, and civil works
Why Clients Choose Us

Ontario's Most Complete Construction Team

From the moment you have a site — or even before — Terrahills manages every step. Land acquisition, permits, design, construction, and handover. One accountable team. Zero gaps. Serving every municipality in Ontario for over 30 years — from the GTA and Simcoe County to Northern Ontario communities like Sudbury, Thunder Bay, Timmins, and Sault Ste. Marie, and Eastern Ontario from Ottawa to Kingston, Belleville, and Brockville.

01
One Team, Every Phase

Land acquisition, feasibility, permits, construction, and handover — all under one roof. No gaps between consultants and builders.

02
LEED & NetZero Certified

We pursue NetZero and LEED pathways on every eligible Ontario project — lowering your long-term operating costs from day one.

03
Every Municipality in Ontario

Based in Simcoe County, we build in Toronto, the GTA, Ottawa, Hamilton, Barrie, and every community across Ontario.

What We Build

Every Sector. Every Scale.

Commercial, industrial, multi-residential, infrastructure, data centres, and custom homes. If it gets built in Ontario, we build it — and we manage every phase from permits to occupancy.

01
Commercial construction Ontario — ICI general contractor for retail, office, and commercial projects
Commercial & Retail

Office towers, retail plazas, mixed-use developments, and tenant build-outs across Ontario — delivered on schedule with full permit management.

Explore
02
Industrial construction Ontario — EU-GMP pharmaceutical and manufacturing facility Simcoe County
Industrial & Manufacturing

Warehouses, EU-GMP pharmaceutical facilities, IMP industrial parks, and manufacturing plants — from Simcoe County to the GTA.

Explore
03
Infrastructure and site servicing construction Ontario — roads, utilities, and civil works
Infrastructure & Site Servicing

Roads, sewer and watermain, stormwater management, lot clearing, grading, and utility trenching — anywhere in Ontario.

Explore
04
Data centre construction Ontario — Tier III and Tier IV colocation and enterprise facility builds
Data Centres

Tier III and IV mission-critical data centre construction in Ontario — meeting the highest standards for uptime, redundancy, and security.

Explore
05
Multi-residential apartment building construction Ontario — CMHC-funded and purpose-built rental housing
Multi-Residential

Apartment buildings, condominiums, townhomes, and stacked housing across Ontario — from zoning amendments to construction completion.

Explore
06
Luxury custom home and residential subdivision construction Ontario — design-build general contractor
Custom Homes

Premium custom homes in Ontario — including waterfront and urban builds — managed with the same rigour as our most complex commercial projects.

Enquire
Full-Cycle Construction Services

From Empty Land
to Occupied Building

Every service you need, under one contract, across all of Ontario.

Hire one team and never manage the gap between your designer and your builder again. Terrahills handles every service from first feasibility call to occupancy certificate.

01
Land Acquisition & Feasibility
  • Preliminary planning consultation
  • Development feasibility study
  • Land acquisition consultation
  • Marketing consultation
  • Preconstruction sales consultation
02
Permits, Planning & Design
  • Architectural drawings & AutoCAD drafting
  • Official plan & zoning amendments
  • Site plan application
  • NetZero design
  • LEED certification
03
Site Servicing & Grading
  • Portable bridges & remote access
  • Lot clearing, grading & regrading
  • Sewer & watermain connections
  • Stormwater management
  • Road & parking lot paving
04
Engineering
  • Structural engineering
  • Mechanical designs & calculations
  • Building permit application
05
Construction & Project Management
  • Full project management
  • Subcontractor prequalification & tendering
  • SIP, IMP & precast panel installation
  • Mass timber construction
  • Flat-roofing systems
06
Cost Estimating & Budgeting
  • Class A through C cost estimates
  • Quantitative surveys
  • Project bookkeeping & accounting
Completed & Active Projects

Proof of Delivery

Our Standards

Why Clients Across Ontario Trust Us

01
Zero-Incident Safety Culture

Every Terrahills site runs a certified safety program. Zero-incident performance is our standard — not our aspiration. Ontario's OHS requirements are our floor, not our ceiling.

02
Open-Book Pricing

Our clients see every trade tender, every cost line, every change order — before it happens. Open-book project management means you always know where your money is going.

03
Modern Build Methods

SIP, IMP, mass timber, GPS-guided grading, prefabricated assemblies — we use modern methods that cut schedules and lower long-term costs on every Ontario project.

04
One Integrated Team

When design, engineering, and construction sit under one team, projects move faster, cost less, and arrive exactly as specified. That is the Terrahills delivery model.

05
Local Community Investment

We hire local, buy local, and invest in the municipalities we build in — from Simcoe County to Toronto and across every community in Ontario.

06
Uncompromising Craftsmanship

We hold every surface, joint, and finish to a standard that earns referrals. Clients who have built with us once tend to bring us their next project — and the one after that.

FAQ

Questions Prospective Clients Ask Us

Clear answers about hiring a general contractor or project manager in Ontario.

Can you build a Tier III or Tier IV data centre in Ontario?+
Terrahills adheres to Tier III and IV standards for all data centre construction projects across Ontario — ensuring high availability, redundancy, power resilience, and robust physical security. We manage every phase from site selection and permitting through mechanical and electrical coordination to commissioning.
What commercial construction projects do you take on in Ontario?+
We build retail fit-outs, office complexes, commercial plazas, mixed-use developments, and industrial facilities across Ontario. Our scope covers project management, regulatory compliance, architectural coordination, trades management, and delivery from permit to occupancy under one contract.
Do you build apartment buildings and multi-residential developments in Ontario?+
Yes. We build low-rise and mid-rise apartment buildings, purpose-built rental housing, stacked townhomes, and mixed-income developments across Ontario. We manage the complete scope — zoning and official plan amendments, site servicing, architectural coordination, full construction management, and CMHC documentation support through to occupancy.
Can Terrahills help with CMHC MLI Select insured financing?+
Yes. We have direct experience structuring and delivering projects under CMHC MLI Select — including the Energy Efficiency, Affordability, and Accessibility streams. We understand the construction timelines, documentation standards, and building requirements that CMHC lenders require, and manage the entire build to meet them from land acquisition through occupancy.
Do you build luxury custom homes and estate residences in Ontario?+
Yes. Terrahills builds premium custom homes, estate residences, waterfront and lakefront homes, semi-custom homes, and urban infill builds across Ontario. We manage every phase — architectural coordination, permits and approvals, site work, and full construction — under one contract with the same rigour we bring to our commercial and industrial projects.
Can you develop a residential subdivision in Ontario?+
Yes. We manage residential subdivision development from start to finish — land acquisition, lot severance, official plan amendments, zoning by-law applications, site servicing, road construction, and the full construction of townhome communities and single-family home developments. Whether you are developing a large subdivision or severancing a single lot, we manage the complete scope.
Do you act as a development consultant or owner's representative?+
Yes. Beyond general contracting, Terrahills provides development consulting and owner's representative services — including land feasibility analysis, development pro forma review, preconstruction planning, permit strategy, and project oversight for owners who need expert representation throughout the development process.
What is integrated project delivery and does Terrahills offer it?+
Integrated project delivery (IPD) means one team manages every phase — land acquisition, permits, design coordination, site servicing, construction, and occupancy — under a single contract. This eliminates gaps between consultants and contractors, reduces delays, and gives owners a single point of accountability. It is the core model Terrahills uses on every project.
Do you build LEED-certified or NetZero buildings in Ontario?+
We specialize in NetZero design and LEED certification pathways, and work with mass timber, Structural Insulated Panels (SIPs), and Insulated Metal Panels (IMPs) to reduce embodied carbon and long-term operating costs. Our approach embeds sustainability from design through construction on every project.
What areas of Ontario do you serve?+
Terrahills is headquartered in Ramara, Simcoe County and serves all 444 Ontario municipalities — including Toronto and the GTA, Barrie, York Region, Hamilton, Ottawa, Kitchener-Waterloo, London, and every community in between. There is no project location in Ontario we will not consider.
Can you handle roads, utilities, and site servicing in Ontario?+
Our infrastructure and site servicing scope includes road and parking lot paving, utility trenching (hydro, cable, internet), sewer and watermain connections, stormwater management, culverts, dewatering, portable bridges, lot clearing, grading and regrading, maintenance holes, and transformer concrete works — for developers, municipalities, and private clients across Ontario.
How long has Terrahills been in operation?+
Terrahills Developments Inc. has been delivering construction projects across Ontario for over 30 years. Our experience spans EU-GMP certified pharmaceutical facilities, Tier IV data centres, multi-unit industrial parks, CMHC-funded rental housing, luxury custom homes, and infrastructure projects — across every major Ontario market.
How do I get a quote for my construction project?+
Contact us through the Get a Quote page or call 365-688-9387. Provide details on your project type, location, approximate size, and timeline. We will schedule a consultation, review the scope, and provide a detailed proposal. There is no obligation and the initial consultation is free.
Guides & Industry Insights

Built to Inform

General Contractor · Province-Wide

Start Your Project Today

Get a free quote from Ontario's most capable general contractor. We build commercial, industrial, multi-residential, data centre, infrastructure, and custom home projects — anywhere in the province.

TorontoMississaugaBramptonOttawaHamiltonLondonMarkhamVaughanKitchenerWindsorTimminsSudburyThunder BayNorth BaySault Ste. MarieKenoraBrockvilleCornwallBellevillePembrokeStratfordBrantfordPeterboroughLeamingtonRichmond HillOakvilleBurlingtonOshawaBarrieSimcoe CountyRamaraOrilliaMidlandCollingwoodInnisfilNewmarketAuroraStouffvillePickeringAjaxWhitbyClaringtonGeorginaBradfordAllistonWasaga BeachPenetanguisheneGuelphCambridgeWaterlooPeterboroughKingstonBellevilleSudburyThunder BayNorth BaySault Ste. MarieSt. CatharinesNiagara FallsBrantfordSarniaKawartha LakesProvince-Wide
About Us

Ontario's General Contractor for Demanding Projects

Over 30 years building commercial, industrial, multi-residential, infrastructure, data centre, and custom home projects across Ontario — with one accountable team from start to occupancy.

30+ Years in Ontario Construction

Every Sector.
Every Scale.

The Terrahills team is composed of experienced and entrepreneurial professionals with extensive knowledge in land planning, project management, construction, pre-construction sales, and marketing.

Our professionals have acted in consulting, advisory, and general contractor capacities for clientele across residential, commercial, and industrial sectors — delivering projects ranging from lot clearing operations to EU-GMP certified industrial facilities and Tier IV data centres.

We specialize in integrated project delivery — ensuring seamless coordination from land acquisition through to post-construction facility management, all under one trusted roof.

Terrahills is committed to making a positive impact on local communities and the environment. From NetZero design to LEED certification, sustainability is embedded in everything we build.

30+
Years Experience
Ontario
Province-Wide
Tier IV
Data Centre Capable
EU-GMP
Certified Builds
Sustainable construction Ontario
Why One Team Wins

When one team owns design, permits, and construction — there is no blame between consultants and contractors. Projects move faster, cost less, and land exactly where they were scoped.

Our Values

What We Value

01
Zero-Incident Safety Culture

Our workers' safety is our top commitment. We maintain safety programs and licenses current at all times, meeting Ontario's occupational health and safety standards.

02
Open-Book Pricing

From trades tendering to project bookkeeping — full transparency with all clients and partners. No surprises, no hidden costs, ever.

03
Modern Build Methods

Innovation is core to who we are. We seek and employ the most environmentally friendly and efficient methodologies for every project.

04
One Integrated Team

Collaboration is central to our culture — capitalizing on each team member's strengths to achieve the greater goal for the benefit of the client.

05
Local Community Investment

We organize and sponsor community events and workshops, contributing to the long-term prosperity of the areas we build in.

06
Uncompromising Craftsmanship

We hold every surface, joint, and finish to a standard that earns referrals. Clients who have built with us once tend to bring us their next project — and the one after that.

Our Expertise

Build Anything.
Anywhere in Ontario.

Commercial, industrial, data centres, multi-residential, infrastructure, and custom homes — Terrahills has delivered every sector across Ontario. Sectors.

01
Commercial Construction Ontario

Our commercial construction services span the full spectrum — from new builds to complex retrofits of retail spaces, office towers, and mixed-use developments. We provide complete project management, regulatory compliance, and ensure efficient space utilization. Whether constructing a new commercial complex or renovating an existing retail environment, we deliver spaces that inspire productivity across Ontario.

Retail Fit-OutsOffice ConstructionMixed-Use DevelopmentCommercial RenovationProject Management
Commercial construction Ontario — ICI general contractor for retail, office, and commercial projects
02
Industrial Construction Ontario

Terrahills specializes in complex industrial construction across Ontario — from single-tenant manufacturing plants to multi-unit industrial park developments. Our capability includes EU-GMP certified pharmaceutical and life-science facilities, requiring the highest standards in clean-room design, HVAC segregation, mechanical systems, and regulatory compliance. We manage every aspect of industrial project delivery, from initial feasibility to occupancy.

EU-GMP CertifiedManufacturing PlantsIndustrial ParksWarehouse ConstructionClean Room
EU-GMP certified industrial pharmaceutical facility Simcoe County Ontario — engineered and built by Terrahills
03
Infrastructure & Site Servicing Ontario

Our infrastructure construction services encompass a wide range of solutions for modern development projects. From portable bridges and culverts to utilities infrastructure and road construction, we deliver high-quality civil infrastructure that prioritizes safety, efficiency, and long-term sustainability. We serve municipalities, developers, and private clients across Ontario.

Road ConstructionUtilities & ServicingPortable BridgesStormwater ManagementParking Lot Paving
Infrastructure road construction Ontario
04
Data Centre Construction Ontario

Terrahills serves Simcoe County and broader Ontario with exceptional data centre construction and project management. By adhering to Tier III and IV standards, we ensure every data centre project meets the highest benchmarks for security, redundancy, and availability. Our commitment to sustainability and community impact makes us the trusted choice for mission-critical facility construction throughout Ontario.

Tier III Data CentresTier IV Data CentresMission-CriticalRedundancy Systems
Data centre construction Ontario — Tier III and Tier IV colocation and enterprise facility builds
05
Multi-Residential & CMHC-Funded Construction Ontario

From stacked townhomes and low-rise apartments to mid-rise purpose-built rental buildings, Terrahills delivers multi-residential construction projects across Ontario. We work with private developers, non-profit housing providers, and co-operative housing organizations to deliver CMHC-funded projects from land acquisition through to occupancy.

Terrahills has direct experience navigating CMHC MLI Select insured financing — helping developers structure projects that qualify under the Energy Efficiency, Affordability, and Accessibility streams. We understand the construction timelines, documentation requirements, and building standards that CMHC lenders require, and we manage the entire build to meet them.

Our multi-residential services include land acquisition consultation, official plan amendments, zoning by-law applications, site servicing, full architectural coordination, and construction management from permit to occupancy — the complete scope under one contract.

We also deliver low-rise and mid-rise apartment buildings for private developers and non-profit housing providers across Ontario, and residential subdivision development — managing land acquisition, lot severance, site servicing, zoning approvals, and construction of townhome and single-family communities.

CMHC MLI SelectPurpose-Built RentalAffordable Housing ConstructionApartment Building ConstructionCondominium ConstructionTownhome DevelopmentMixed-Income HousingTransit-Oriented DevelopmentNon-Profit HousingCo-operative Housing
CMHC-funded multi-family apartment building construction Ontario — purpose-built rental and affordable housing
06
Luxury Custom Homes & Residential Subdivisions

Terrahills builds premium custom homes and estate residences across Ontario — from waterfront properties and lakefront retreats to high-end urban infill homes and rural estate builds. Our custom home projects are fully managed from architectural design coordination and permit approvals through to final finishes and occupancy, delivering the highest standard of craftsmanship under a single accountable contract.

We also develop residential subdivisions — managing the complete lifecycle from land acquisition, lot severance, and official plan amendments through site servicing, road construction, and the construction of townhome communities and single-family home developments. Whether you are a land developer planning a full subdivision or a private buyer building a one-of-a-kind estate home, Terrahills brings the same rigour and transparency to every residential project.

Luxury Custom HomesEstate Home ConstructionWaterfront HomesSemi-Custom HomesResidential SubdivisionLot SeveranceTownhome DevelopmentSingle-Family CommunitiesLand Development
Luxury custom home construction and residential subdivision development Ontario — estate and waterfront builds
Services

Every Service
Under One Contract

From finding the right land to handing over the keys — one Ontario contractor manages every phase, every trade, and every permit so you never fall through the cracks.

Terrahills Developments has been dedicated to top-quality commercial and residential construction services for more than three decades. Our goal is to build strong and lasting relationships — delivering the highest quality projects on-time and on-budget.

Land acquisition and feasibility services Ontario — site selection, zoning analysis, and development due diligence
01
Land Acquisition & Feasibility
  • Preliminary planning consultation
  • Development feasibility study
  • Land acquisition consultation
  • Marketing consultation
  • Preconstruction sales consultation
Building permits planning and design management Ontario — ICI and residential construction approvals
02
Permits, Planning & Design
  • NetZero design
  • LEED certification
  • Transactional data-backed design consultation
  • Architectural drawings & AutoCAD drafting
  • Official plan amendment
  • Zoning review, amendment & rezoning applications
  • Minor variance & committee of adjustments
  • Lot severance & site plan application
Site servicing and grading Ontario — earthworks, utilities, and residential subdivision land development
03
Site Servicing & Grading
  • Remote accessibility (portable bridges & pathways)
  • Lot clearing
  • Grading & regrading
  • Sewer & watermain service connections
  • Stormwater management services
  • Dewatering services
  • Maintenance holes
  • Utility trenching (cable, hydro & internet)
  • Culverts
  • Transformer concrete works
  • Road and parking lot subgrade & paving
Construction engineering services Ontario — structural, civil, and mechanical engineering for ICI projects
04
Engineering
  • Structural engineering
  • Mechanical designs & calculations
  • Building permit application
Construction cost estimating and budgeting Ontario — ICI and residential project cost planning
05
Cost Estimating & Budgeting
  • Class A through C construction cost estimates
  • Quantitative surveys
  • Project bookkeeping & accounting
Construction and project management services Ontario — general contractor for commercial, industrial, and residential builds
06
Construction & Project Management
  • Project management
  • Subcontractor prequalification
  • Project tendering
  • Project bookkeeping & accounting
  • Concrete work
  • Structural Insulated Panel (SIP) installation
  • Insulated Metal Panel (IMP) installation
  • Precast Concrete Panel installation
  • Mass timber construction
  • Exterior access door and window installation
  • Flat-roofing systems
CMHC multi-family purpose-built rental construction Ontario
07
CMHC-Funded Multi-Family Construction

Terrahills builds purpose-built rental, affordable housing, and mixed-income multi-family developments across Ontario — including projects structured to qualify for CMHC MLI Select insured financing and the CMHC Rental Construction Financing Initiative (RCFI). We manage every phase from zoning and site servicing through construction and occupancy, ensuring the project meets CMHC's construction standards, timelines, and documentation requirements throughout.

MLI Select Streams
  • Energy Efficiency stream
  • Affordability stream
  • Accessibility stream
  • Combined stream projects
Project Types
  • Purpose-built rental apartments
  • Affordable housing developments
  • Mixed-income residential
  • Co-operative & non-profit housing
  • Transit-oriented development
  • Seniors & accessible housing
Our Scope
  • Land acquisition & feasibility
  • Zoning & OPA applications
  • Site servicing & grading
  • Full construction management
  • CMHC documentation support
  • Occupancy & handover
Luxury custom home construction and residential subdivision development Ontario — design-build general contractor
08
Luxury Custom Homes & Residential Subdivisions

Terrahills builds premium custom homes and estate residences across Ontario — managing architectural coordination, permits, site work, and construction under one contract. We also develop residential subdivisions from land acquisition and lot severance through site servicing and full community construction.

Custom Homes
  • Luxury & estate homes
  • Waterfront & lakefront homes
  • Semi-custom homes
  • Urban infill custom homes
  • Rural estate builds
Subdivision Development
  • Land acquisition & feasibility
  • Lot severance & land division
  • Site servicing & roads
  • Townhome communities
  • Single-family developments
Our Scope
  • Architectural coordination
  • Permits & approvals
  • Zoning & OPA applications
  • Full construction management
  • Occupancy & handover

Ready to discuss your next project?

Portfolio

Projects Delivered
Across Ontario

Browse completed and active commercial, industrial, infrastructure, data centre, and residential projects built by Terrahills across Ontario.

Related Projects

More Projects

Resources

Project Guides &
Real Case Studies

Plain-language guides on hiring a general contractor, planning a development, and understanding construction costs in Ontario — plus real case studies from our delivered projects.

Blog

Construction Insights
& Industry Blog

Practical construction and development insights for Ontario property owners, developers, and project managers — written by the Terrahills team.

Latest

All Posts

Contact

Get a Free Project Quote

Tell us about your project — commercial, industrial, multi-residential, data centre, infrastructure, or custom home — and we'll come back with a detailed, competitive proposal. No obligation.

Get In Touch

Get a Competitive Quote
for Your Ontario Project

Speak directly with our project team. We quote commercial, industrial, multi-residential, data centre, infrastructure, and custom home projects anywhere in Ontario.

Address
1632 Ramara Road 51
Ramara, Ontario  L0K 1Z0
Service Area
Simcoe County, Cottage Country, York Region, City of Toronto, Durham Region, Peel Region, Halton Region & All of Ontario
Website
www.terrahillsdevelopments.ca
30+ years building across every Ontario sector
One contract covers land to occupancy
Tier III & IV data centre builder
EU-GMP industrial facility constructor
LEED & NetZero certified builds
Open-book pricing & full reporting
CMHC MLI Select & purpose-built rental builder
Luxury custom homes & estate residential builds
Residential subdivision & lot development
Apartment building construction — low & mid-rise
Project Inquiry
✓ Thank you — your inquiry has been sent. We'll be in touch within 1–2 business days.

Your information is kept strictly confidential. We typically respond within 1–2 business days.

Our Location

Based in Simcoe County,
Building Across Ontario

Our team is based at 1632 Ramara Road 51, Ramara, Ontario — in the heart of Simcoe County. We serve clients across all of Ontario, from Simcoe County to Toronto, the GTA, Ottawa, and beyond.

ADDRESS
1632 Ramara Road 51
Ramara, Ontario  L0K 1Z0
SERVICE AREA
All of Ontario, Canada
View on Google Maps →
Province-Wide

General Contractor
Across Ontario

Terrahills delivers commercial, industrial, multi-residential, data centre, infrastructure, and custom home construction across every major Ontario market — one team, one contract, province-wide.

Where We Build

Ontario Construction
Markets We Serve

From our base in Simcoe County, Terrahills manages construction projects across all of Ontario. Select your region to learn more about how we work in your market.

Home Market
Simcoe County
Our headquarters. 30+ years delivering EU-GMP industrial, multi-residential, custom homes, and infrastructure across Barrie, Orillia, Midland, Collingwood, and all of Simcoe County.
Learn More
Major Market
Toronto & GTA
Commercial, industrial, multi-residential, data centre, and custom home construction across Toronto, Mississauga, Brampton, Oakville, Burlington, and the broader GTA.
Learn More
Regional Hub
Barrie
Full-service general contracting in Barrie and surrounding communities — commercial fit-outs, industrial facilities, multi-residential developments, and custom homes.
Learn More
Growth Corridor
York Region
Commercial, industrial, purpose-built rental, and data centre construction across Vaughan, Markham, Richmond Hill, Newmarket, and Aurora.
Learn More
Industrial Belt
Hamilton & Niagara
Industrial, commercial, multi-residential, and infrastructure construction across Hamilton, Burlington, Grimsby, St. Catharines, and the Niagara region.
Learn More
Eastern Ontario
Ottawa
Commercial, industrial, data centre, and CMHC-funded multi-family construction in Ottawa and Eastern Ontario — complex regulated builds delivered on schedule.
Learn More
Tech Corridor
Kitchener-Waterloo
Data centre, advanced manufacturing, commercial, and purpose-built rental construction across Kitchener, Waterloo, Cambridge, and Guelph.
Learn More
Southwestern Ontario
London, Ontario
Commercial, industrial, multi-residential, and infrastructure construction across London, St. Thomas, Woodstock, and Southwestern Ontario.
Learn More
Northern Ontario
Sudbury & Northern Ontario
Commercial, industrial, mining infrastructure, and multi-residential construction across Sudbury, Thunder Bay, Sault Ste. Marie, North Bay, Timmins, and all of Northern Ontario.
Learn More
Eastern Ontario
Kingston & Eastern Ontario
Commercial, industrial, institutional, and multi-residential construction across Kingston, Belleville, Brockville, Cornwall, Peterborough, Cobourg, and all of Eastern Ontario.
Learn More
Niagara Peninsula
Niagara Region
Commercial, industrial, multi-residential, and infrastructure construction across St. Catharines, Niagara Falls, Welland, Fort Erie, Thorold, Grimsby, and the full Niagara Peninsula.
Learn More
Southwestern Tip
Windsor & Essex County
Commercial, industrial, automotive-sector, and multi-residential construction across Windsor, LaSalle, Tecumseh, Leamington, Amherstburg, and Essex County.
Learn More
Cottage Country
Muskoka & Cottage Country
Luxury waterfront homes, estate builds, custom cottages, and residential subdivision development across Muskoka, Haliburton, Parry Sound, and Ontario cottage country.
Learn More
Kawartha Region
Peterborough & Kawarthas
Commercial, industrial, residential, and infrastructure construction across Peterborough, Lindsay, Cobourg, Port Hope, Campbellford, and the Kawartha Lakes region.
Learn More
All of Ontario
Don't See Your City?
Terrahills serves all 444 Ontario municipalities. Contact us for any project anywhere in the province.
Get a Quote
Ready to Build?

One Team.
All of Ontario.

Commercial, industrial, multi-residential, data centre, infrastructure, or custom home — Terrahills manages every phase from permits to occupancy, anywhere in Ontario.

Ontario General Contractor

General Contractor
Simcoe County

Terrahills Developments is headquartered in Ramara, at the heart of Simcoe County — giving us unmatched local knowledge and rapid response across Barrie, Orillia, Midland, Collingwood, Innisfil, and every municipality in between.

About Our Work in Simcoe County

Terrahills in
Simcoe County

With over 30 years of construction experience in Simcoe County, Terrahills has delivered some of the region's most complex commercial, industrial, and residential projects. From EU-GMP certified pharmaceutical facilities in Ramara to multi-unit industrial parks and custom waterfront homes, we understand the local zoning requirements, municipal permitting processes, and site conditions that define construction in Simcoe County.

Our team manages every phase — land acquisition, permits, design, site servicing, construction, and occupancy — under one contract. No coordination gaps between consultants and trades. One accountable team from start to finish.

Areas Served
BarrieOrilliaMidlandCollingwoodInnisfilRamaraPenetanguisheneWasaga BeachBradfordNew Tecumseth
Services in Simcoe County
  • Commercial Construction
  • Industrial Construction
  • Site Servicing & Grading
  • Custom Home Construction
  • Data Centre Construction
  • Multi-Residential Development
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Simcoe County project.

Ready to Build in Simcoe County?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Simcoe County construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
Toronto & GTA

Terrahills brings 30+ years of Ontario construction experience to Toronto and the Greater Toronto Area — delivering commercial, industrial, multi-residential, data centre, and custom home projects across the region.

About Our Work in Toronto & GTA

Terrahills in
Toronto & GTA

The GTA presents unique construction challenges: dense urban sites, strict City of Toronto permitting requirements, limited staging areas, and complex logistics. Terrahills has the experience and systems to navigate all of it — managing every phase from permits and design through to occupancy under one contract.

From Scarborough to Etobicoke, Mississauga to Brampton, our team delivers on-time and on-budget construction with full transparency and open-book reporting throughout.

Areas Served
TorontoMississaugaBramptonMarkhamVaughanRichmond HillOakvilleBurlingtonPickeringAjax
Services in Toronto & GTA
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • Data Centre Construction
  • Custom Home Construction
  • CMHC MLI Select Projects
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Toronto & GTA project.

Ready to Build in Toronto & GTA?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Toronto & GTA construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
Barrie, Ontario

Terrahills Developments serves Barrie and surrounding communities with full-service general contracting — commercial, industrial, infrastructure, and residential construction managed under one contract.

About Our Work in Barrie

Terrahills in
Barrie

As a Simcoe County-based contractor, Terrahills is ideally positioned to serve Barrie's rapidly growing construction market. We understand the City of Barrie's permitting processes, development requirements, and local site conditions — delivering faster approvals and fewer surprises on every project.

From commercial fit-outs and industrial facilities to multi-residential developments and custom homes, our team manages land acquisition, permits, design coordination, site servicing, and construction — start to finish, one team, one contract.

Areas Served
BarrieInnisfilSpringwaterOro-MedonteEssaAngusAlconaLefroy
Services in Barrie
  • Commercial Construction
  • Industrial Construction
  • Site Servicing & Grading
  • Multi-Residential Development
  • Custom Home Construction
  • Infrastructure
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Barrie project.

Ready to Build in Barrie?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Barrie construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
Ottawa, Ontario

Terrahills delivers commercial, industrial, data centre, and multi-residential construction projects in Ottawa and Eastern Ontario — bringing province-wide expertise with full project management from permit to occupancy.

About Our Work in Ottawa

Terrahills in
Ottawa

Ottawa's construction landscape demands contractors with proven capability in regulated, complex builds. Terrahills brings that capability — with experience in EU-GMP certified industrial facilities, Tier III and IV data centres, and CMHC-funded multi-family developments that require the highest standards in documentation, compliance, and delivery.

We manage every phase under one contract — eliminating the coordination gaps between designers, engineers, and trades that cause delays and cost overruns on complex Ottawa projects.

Areas Served
OttawaKanataNepeanOrleansBarrhavenKingstonBrockvilleCornwallPembrokeRenfrewBellevilleSmiths FallsCarleton PlacePerth
Services in Ottawa
  • Commercial Construction
  • Industrial Construction
  • Data Centre Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Infrastructure
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Ottawa project.

Ready to Build in Ottawa?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Ottawa construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
Hamilton, Ontario

Terrahills serves Hamilton, Niagara, and the surrounding region with full-service general contracting — commercial, industrial, infrastructure, and multi-residential construction under one accountable team.

About Our Work in Hamilton

Terrahills in
Hamilton

Hamilton's industrial heritage and growing development pipeline make it one of Ontario's most active construction markets. Terrahills brings the systems and experience to deliver complex builds in Hamilton — managing permitting through the City of Hamilton, coordinating trades and engineers, and delivering every project on time and on budget.

From light manufacturing and industrial parks to purpose-built rental housing and commercial developments, our integrated project delivery approach ensures seamless execution from land acquisition through occupancy.

Areas Served
HamiltonBurlingtonGrimsbyStoney CreekDundasAncasterWaterdownNiagara FallsSt. Catharines
Services in Hamilton
  • Industrial Construction
  • Commercial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Site Servicing & Grading
  • Infrastructure
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Hamilton project.

Ready to Build in Hamilton?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Hamilton construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
York Region

Terrahills delivers commercial, industrial, multi-residential, and data centre construction projects across York Region — including Vaughan, Markham, Richmond Hill, Newmarket, and Aurora.

About Our Work in York Region

Terrahills in
York Region

York Region is one of Ontario's fastest-growing development corridors, with strong demand for industrial space, purpose-built rental housing, and mixed-use commercial developments. Terrahills has the experience and capacity to deliver across all of these sectors — managing permits through York Region municipalities, coordinating full design and engineering teams, and delivering under one integrated contract.

Our CMHC MLI Select expertise is particularly relevant in York Region, where purpose-built rental demand is high and developers need a contractor who understands the documentation and building standards required for insured financing.

Areas Served
VaughanMarkhamRichmond HillNewmarketAuroraKing CityGeorginaEast Gwillimbury
Services in York Region
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Data Centre Construction
  • Custom Home Construction
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every York Region project.

Ready to Build in York Region?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your York Region construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
Kitchener-Waterloo

Terrahills serves the Kitchener-Waterloo-Cambridge region with commercial, industrial, data centre, and multi-residential construction — delivering complex projects under one integrated contract.

About Our Work in Kitchener-Waterloo

Terrahills in
Kitchener-Waterloo

The Waterloo Region's tech-driven economy has created strong demand for data centre construction, advanced manufacturing facilities, and purpose-built rental housing. Terrahills has direct experience in all three — including Tier III and IV data centre builds and CMHC-funded multi-family developments.

Our integrated project delivery model eliminates the coordination gaps between architects, engineers, and trades — giving Kitchener-Waterloo clients a single point of accountability from land acquisition through occupancy.

Areas Served
KitchenerWaterlooCambridgeGuelphElmiraBadenNew HamburgFergus
Services in Kitchener-Waterloo
  • Data Centre Construction
  • Industrial Construction
  • Commercial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Site Servicing & Grading
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Kitchener-Waterloo project.

Ready to Build in Kitchener-Waterloo?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Kitchener-Waterloo construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

General Contractor
London, Ontario

Terrahills delivers commercial, industrial, infrastructure, and multi-residential construction projects in London, Ontario and Southwestern Ontario — one contractor managing every phase from permits to occupancy.

About Our Work in London

Terrahills in
London

London's diversified economy — with strong healthcare, education, manufacturing, and logistics sectors — drives consistent demand across all construction categories. Terrahills brings province-wide capability to every London project, with proven experience in regulated industrial builds, purpose-built rental housing, and complex commercial developments.

We coordinate every aspect of project delivery — land due diligence, City of London permitting, architectural and engineering coordination, trade management, and construction — under one contract with open-book reporting throughout.

Areas Served
LondonSt. ThomasStrathroyWoodstockTillsonburgIngersollSarniaChatham
Services in London
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Infrastructure
  • Site Servicing & Grading
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every London project.

Ready to Build in London?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your London construction project. Commercial, industrial, multi-residential, data centre, infrastructure, or custom home.

Ontario General Contractor

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Municipalities Served
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One contract. One team. Every phase from land to occupancy — anywhere in Ontario.

Ontario General Contractor

General Contractor
Northern Ontario

Terrahills delivers commercial, industrial, mining-related infrastructure, and multi-residential construction projects across Northern Ontario — from Sudbury and Thunder Bay to Sault Ste. Marie, North Bay, Timmins, and the surrounding region.

About Our Work in Northern Ontario

Terrahills in
Northern Ontario

Northern Ontario presents unique construction challenges — remote sites, extreme climate conditions, specialized logistics, and a distinct regulatory environment. Terrahills brings the systems and experience to deliver complex builds anywhere in the north, managing every phase from land acquisition and permitting through site servicing, construction, and occupancy under one contract.

Our Northern Ontario capabilities include industrial and resource-sector facility construction, commercial development, multi-residential housing, institutional builds, and infrastructure projects for municipalities, developers, and private clients.

Areas Served
SudburyThunder BaySault Ste. MarieNorth BayTimminsKenoraKirkland LakeElliot LakeKapuskasingHearstCochraneParry SoundTemiskaming ShoresNew LiskeardEnglehart
Services in Northern Ontario
  • Industrial Construction
  • Commercial Construction
  • Infrastructure & Site Servicing
  • Multi-Residential Development
  • Mining & Resource Facility Construction
  • Project Management
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Northern Ontario project.

Ready to Build in Northern Ontario?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Northern Ontario construction project.

Ontario General Contractor

General Contractor
Kingston & Eastern Ontario

Terrahills delivers commercial, industrial, institutional, and multi-residential construction across Kingston, Belleville, Peterborough, Brockville, Cornwall, and the broader Eastern Ontario region.

About Our Work in Kingston & Eastern Ontario

Terrahills in
Kingston & Eastern Ontario

Eastern Ontario's diverse economy — spanning healthcare, education, government, agriculture, and manufacturing — drives consistent construction demand across all project types. Terrahills brings province-wide capability and 30+ years of experience to every Eastern Ontario project.

We manage every phase under one contract — municipal permitting, architectural and engineering coordination, site servicing, construction management, and occupancy — eliminating the gaps between consultants and trades that cause delays on complex Eastern Ontario projects.

Areas Served
KingstonBellevilleBrockvilleCornwallPeterboroughCobourgTrentonNapaneeGananoquePrescottPembrokeRenfrewSmiths FallsPerthLindsay
Services in Kingston & Eastern Ontario
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • Institutional Construction
  • Infrastructure & Site Servicing
  • CMHC MLI Select Projects
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Kingston & Eastern Ontario project.

Ready to Build in Kingston & Eastern Ontario?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Kingston & Eastern Ontario construction project.

Ontario General Contractor

General Contractor
Niagara Region

Terrahills delivers commercial, industrial, multi-residential, and infrastructure construction across the Niagara Region — including St. Catharines, Niagara Falls, Welland, Fort Erie, Thorold, Grimsby, and the surrounding peninsula.

About Our Work in Niagara Region

Terrahills in
Niagara Region

The Niagara Region's growing economy and expanding development pipeline make it one of Ontario's most active construction markets. Strong demand for industrial space, purpose-built rental housing, and commercial development creates consistent opportunities across the peninsula.

Terrahills manages every aspect of project delivery in Niagara — navigating Niagara Region municipality permitting, coordinating full design and engineering teams, managing site servicing and construction trades, and delivering under one integrated contract with full transparency.

Areas Served
St. CatharinesNiagara FallsWellandFort ErieThoroldGrimsbyLincolnWest LincolnPelhamPort ColborneNiagara-on-the-LakeWainfleet
Services in Niagara Region
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Infrastructure & Site Servicing
  • Custom Home Construction
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Niagara Region project.

Ready to Build in Niagara Region?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Niagara Region construction project.

Ontario General Contractor

General Contractor
Windsor & Essex County

Terrahills delivers commercial, industrial, automotive-sector facility construction, and multi-residential development across Windsor, LaSalle, Tecumseh, Leamington, Amherstburg, and Essex County.

About Our Work in Windsor & Essex County

Terrahills in
Windsor & Essex County

Windsor and Essex County are home to one of Canada's most significant industrial and manufacturing corridors — anchored by the automotive industry and expanding into EV manufacturing, advanced logistics, and agri-food processing. Terrahills brings the industrial construction capability to deliver complex, regulated builds in this market.

We manage every phase under one contract — land acquisition, permits and zoning, site servicing, construction, and occupancy — giving Windsor-Essex clients a single point of accountability with full open-book reporting throughout.

Areas Served
WindsorLaSalleTecumsehLakeshoreLeamingtonAmherstburgEssexKingsvilleChathamTilbury
Services in Windsor & Essex County
  • Industrial Construction
  • Commercial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Site Servicing & Grading
  • Infrastructure
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Windsor & Essex County project.

Ready to Build in Windsor & Essex County?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Windsor & Essex County construction project.

Ontario General Contractor

General Contractor
Muskoka & Cottage Country

Terrahills builds luxury waterfront homes, custom cottages, estate residences, and residential developments across Muskoka, Haliburton, Parry Sound, and Ontario's cottage country — managing every phase from permits to occupancy under one contract.

About Our Work in Muskoka & Cottage Country

Terrahills in
Muskoka & Cottage Country

Ontario's cottage country presents unique construction requirements — waterfront setbacks, septic approvals, shoreline regulations, seasonal access constraints, and specialized logistics. Terrahills has deep experience navigating these challenges, delivering premium waterfront homes and estate builds that meet the highest standards of craftsmanship.

Beyond luxury residential, we also deliver commercial and hospitality construction in cottage country — including resort facilities, marinas, recreational lodges, and mixed-use developments that serve the tourism and recreation economy of Muskoka and the surrounding region.

Areas Served
BracebridgeGravenhurstHuntsvilleMuskoka LakesLake of BaysGeorgian BayParry SoundHaliburtonMindenBancroftAlgonquin HighlandsDysart
Services in Muskoka & Cottage Country
  • Luxury Custom Home Construction
  • Waterfront & Cottage Builds
  • Estate Home Construction
  • Residential Subdivision Development
  • Commercial & Hospitality Construction
  • Site Servicing & Septic
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Muskoka & Cottage Country project.

Ready to Build in Muskoka & Cottage Country?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Muskoka & Cottage Country construction project.

Ontario General Contractor

General Contractor
Peterborough & Kawarthas

Terrahills delivers commercial, industrial, multi-residential, and infrastructure construction across Peterborough, Kawartha Lakes, Lindsay, Cobourg, Port Hope, and the broader Kawarthas region.

About Our Work in Peterborough & Kawarthas

Terrahills in
Peterborough & Kawarthas

Peterborough and the Kawartha Lakes region are experiencing rapid growth — driven by proximity to the GTA, strong residential demand, and expanding commercial and industrial development. Terrahills brings province-wide project delivery capability to this market, managing every phase from permits through construction and occupancy under one contract.

Our experience in CMHC-funded multi-residential construction is particularly relevant in Peterborough, where purpose-built rental demand has grown significantly. We also deliver commercial, industrial, and custom residential projects across the region.

Areas Served
PeterboroughKawartha LakesLindsayCobourgPort HopeCampbellfordHavelockNorwoodLakefieldMillbrookOmemeeFenelon Falls
Services in Peterborough & Kawarthas
  • Commercial Construction
  • Industrial Construction
  • Multi-Residential Development
  • CMHC MLI Select Projects
  • Custom Home Construction
  • Infrastructure & Site Servicing
30+ Years Experience

Terrahills has been delivering construction projects across Ontario since the early 1990s. We bring that depth of experience to every Peterborough & Kawarthas project.

Ready to Build in Peterborough & Kawarthas?

Start Your Project Today

Contact Terrahills for a free, no-obligation quote on your Peterborough & Kawarthas construction project.