General Contractor in Richmond Hill
Richmond Hill's Yonge Street corridor and Highway 404 business parks support a dense mix of medical, professional, retail and light industrial tenants, surrounded by neighbourhoods of family homes.
Your construction partner in Richmond Hill
Harborline Sterling Construction Inc. is a Toronto-based general contractor serving homeowners, businesses and public owners in Richmond Hill. We renovate homes, build and fit out commercial space, and deliver paving, sidewalks, lighting and park projects, with one point of responsibility from permits to keys.
Every project is overseen by one of our founding principals, Mansoor Alam Khan or Maqsood Mohammed.
Construction services in Richmond Hill
Three divisions, one accountable team.
Commercial
New buildings, renovations, tenant build-outs, design-build and construction management for businesses, landlords and developers.
- New Construction
- Remodeling and Additions
- Project Management
- Construction Management
- Tenant and Office Build-Outs
- Design-Build
- Maintenance and Small Works
Residential
Basements, kitchens, bathrooms, additions, driveways, decks and full-home renovations, from one room to the whole house.
- Basements
- Bathrooms
- Kitchens
- Home and Room Renovations
- Additions
- Driveways and Interlock
- Decks, Fences and Outdoor Living
- Roofing, Siding and Windows
- Foundations and Waterproofing
- Accessible Renovations
Infrastructure and Public Works
Roads, sidewalks, street lighting, parks and underground services for municipalities, public agencies, developers and property managers.
- Roads and Paving
- Sidewalks and Curbs
- Street and Site Lighting
- Parks and Playgrounds
- Sewers and Watermains
- Demolition and Site Preparation
Building in Richmond Hill: what to know
Permits and approvals
Building permits are issued by the City of Richmond Hill's building services, with site plan approval through city planning. York Region approvals may apply for regional roads and servicing, and some sites fall within the Oak Ridges Moraine planning area, which brings additional land-use rules.
Site conditions and logistics
Many commercial projects here are build-outs in occupied plazas and office buildings, where phasing, after-hours work and protecting neighbouring tenants matter as much as the build itself.
Ontario Building Code
The 2024 Ontario Building Code took effect on January 1, 2025. We work with your designers to make sure drawings, barrier-free design and life-safety systems meet the current Code.
Winter construction
Frost, cold-weather concrete, temporary heat and shorter days affect cost and schedule. We plan for the season from the start, so winter never becomes a surprise.
Where we work in Richmond Hill
Yonge Street corridor
Medical, professional office, retail and restaurant tenants.
Beaver Creek and Highway 404 business parks
Office, flex and light industrial space.
Richmond Hill neighbourhoods
Basements, kitchens, bathrooms and additions.
Why clients choose Harborline Sterling
Construction has enough variables without a contractor who goes quiet. Here is how we take them off your plate.
One accountable team
One contract, one point of contact, one builder responsible for the schedule, the budget and every inspection in between.
Principal-led
One of our founding principals oversees every project, so you get senior judgment, quick decisions and a direct line to the people accountable for the result.
Responsive
Calls returned promptly, questions answered the same day where possible, and problems raised early, while they are still cheap to fix.
Frequently asked questions
Who issues building permits in Richmond Hill?
The City of Richmond Hill. York Region may also need to approve work affecting regional roads or servicing.
Do you build medical offices and clinics?
Yes. Medical suites are a strong fit for Richmond Hill's Yonge corridor, and we plan for privacy, infection control and barrier-free access from the start.
Can you build while my business stays open?
Yes. We phase work, control dust and noise, schedule disruptive tasks after hours where needed, and keep your staff and neighbouring tenants informed.
What kinds of projects do you take on in Richmond Hill?
Commercial construction and build-outs, home renovations, basements, additions and outdoor projects, and infrastructure work such as paving, sidewalks, lighting and parks.
Start your project in Richmond Hill
Put one accountable team in charge: on schedule, on budget, with permits and inspections handled the whole way.
Start your project
Tell us what you are planning. We will set up a straightforward conversation about scope, budget and timeline, with no obligation.