Green Hills General Contracting — Ontario Builders.
Integrated general contracting and in-house construction that deliver — safely, on time and to the highest standard.
Explore our solutionsIntegrated solutions for Ontario's most complex projects.
Green Hills is one of Ontario's trusted construction organizations. We've helped deliver some of the province's most demanding commercial, institutional and residential builds — from rebar and structural concrete through full-scope general contracting.
Green Hills brings unmatched control, quality and schedule certainty to projects of every size — turning complex challenges into lasting solutions.
Our model is built on owner-aligned planning, integrated trade management and craft-trained crews who execute the work that drives the critical path. We bring engineering rigor to constructability, deploy lean field operations to compress schedule, and apply disciplined cost controls that protect budget certainty from concept through closeout.
Every Green Hills project is underwritten by the same standards — quantifiable safety performance, design intent honored to specification, schedule reliability measured against earned-value milestones, and a closeout process that delivers fully commissioned facilities ready for day-one occupancy.
Rebar, concrete, masonry and more.
Our services encompass, but are not limited to, rebar installation, concrete forming, masonry and other construction-related work.
Each scope is delivered under integrated supervision, executed by long-tenured crews and held to the same quality, safety and schedule standards that have earned Green Hills repeat work across Ontario's most demanding markets.
Reinforcing steel, placed right
Green Hills installs reinforcing steel for foundations, slabs, walls, columns and structural elements across every scale of build. Bars are detailed to shop drawings, fabricated to project specifications and placed by certified rod busters who tie, splice and support to the tolerances structural engineers require. Pre-pour inspections are coordinated directly with consultants and inspection agencies, sequenced to keep formwork crews moving and concrete trucks pouring on schedule. From mat foundations and pile caps to post-tensioned slabs and high-rise shear walls, our reinforcing scopes are executed with the documentation, traceability and field discipline that defines critical-path work.
Learn more about rebarSector expertise, delivered with precision.
Green Hills delivers across the market sectors that shape Ontario's built environment — commercial campuses across the GTA, multi-storey residential towers redefining city skylines, and institutional facilities serving the communities that depend on them.
Each sector demands a distinct delivery approach — phased construction in customer-occupied retail, infection-control protocols in active healthcare environments, and post-tensioned floor systems in high-rise residential towers. We bring sector-specific expertise, pre-vetted trade partnerships and the field discipline to deliver each scope to its highest standard.
Commercial Establishments
From retail anchors to corporate campuses, we deliver commercial builds that perform at every level.
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Low & High-Rise Buildings
Multi-storey residential and mixed-use developments built to code, on schedule, with zero compromise.
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Institutional & Healthcare
Critical infrastructure including hospitals and care facilities — built with the precision that lives depend on.
Learn moreRecent work across Ontario.
A representative cross-section of recent Green Hills work — institutional, residential and commercial scopes delivered across Ontario under disciplined schedules, integrated supervision and the craft standards that define our reputation.
Each engagement reflects the same operating model: lean project teams, in-house structural concrete and reinforcing steel on the critical path, and field leadership accountable from mobilization through closeout.
Weeneebayko Area Health Authority Redevelopment
Subcontractor scope on a critical northern healthcare redevelopment — concrete, forming and reinforcing steel executed under remote-site logistics.
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Wellings of Stittsville
Multi-storey senior living community — structural concrete, formwork and reinforcing executed to high-rise residential tolerances.
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Wellings of Whitby
Twin-tower residential development delivered on an aggressive schedule with phased pours, tight site logistics and disciplined trade sequencing.
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Ellesmere Road Warehouses
Large-format warehouse facility — slab-on-grade, tilt-coordinated forming and reinforcing steel installed on a fast-track commercial schedule.
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Safety isn't a program. It's how we build.
Regardless of your role on a Green Hills project, your safety is our highest priority. Our Health, Safety & Environment program is a collective commitment — everyone home, every day.
Our HSE management system is built on ISO-aligned protocols, jurisdictional code compliance and a culture of personal ownership. Site-specific safety plans, certified competency tracking, environmental controls and emergency response procedures are embedded into every project from pre-mobilization through demobilization — and audited continuously to surface trends before they become incidents.
Explore our safety standardsHazard identification & mitigation
Pre-task hazard assessments, engineered controls and formal job hazard analyses precede every scope of work — every shift, on every site. We identify risks before they become incidents and build mitigation into the plan from day one.
This proactive approach includes air-quality monitoring, confined-space protocols, fall-protection systems and live utility mapping. Nothing begins until every identified hazard has a documented control and every team member understands their role in executing it.
Disciplined execution
Defined accountabilities, daily field supervision and stop-work authority empower every craft worker to verify safe conditions before progressing. Safety is never bypassed for speed — no exceptions, no shortcuts.
Every trade partner and subcontractor is onboarded to our HSE standards before they set foot on site. Daily toolbox talks, real-time hazard alerts and direct reporting to the operations lead create a culture where every person has both the right and the obligation to act.
Continuous improvement
Leading-indicator tracking, near-miss reporting and rigorous post-incident reviews drive measurable performance gains. We learn from every observation and apply those lessons across every active site to raise the standard.
Monthly safety audits, cross-site data comparison and third-party reviews ensure our standards evolve alongside regulatory updates and industry best practices. Our target is not just compliance — it is a sustained record of zero injuries and zero environmental incidents.
Build your best.
Join a crew that builds at scale. From footing to finish, your work stands — and so do the people who do it with you.
At Green Hills, careers are engineered around long-term growth — structured mentorship, accredited safety and trade certifications, hands-on rotations across estimating, operations and field leadership, and a culture that promotes from within. Whether you're entering the trades or advancing into project executive leadership, you'll work alongside crews and managers who treat craft as a profession and accountability as a baseline.
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Ready to break ground? So are we.
Whether you're scoping a new build, pricing trades or looking for a general contractor you can trust — our team is ready.
Share project parameters, delivery model, target schedule and site information. Our preconstruction and operations leads will engage directly — providing budget validation, constructability feedback and a clear roadmap for next steps within one business day.
Whitby, Ontario