Renovation Contractor in Oshawa & Durham Region
Not every organization runs a large portfolio with its own maintenance department. Cornerstone Construction handles repairs, upkeep, and unit turnover for shelters, non-profits, and smaller property operators across Durham Region and the GTA — a licensed, insured contractor you can actually reach, sized right for one building or a handful of them.
Large maintenance companies are built around hundreds of units and a call centre. Cornerstone works directly with a small number of properties — no account number, no call queue.
Cornerstone takes the call, dispatches the right work, and manages it start to finish — the coverage of an in-house team, without the overhead of hiring one.
A fully licensed and insured Ontario general contracting corporation, built on 35+ years of construction management experience — applied to everyday repair and upkeep work.
One contact for repairs, upkeep, and unit turnover — not five different trades to track down. Built to the same standard as our full renovation work, so a shelter or small rental property gets the same discipline as a commercial job. You get a known contractor, not an account number.
This is business-hours repair and maintenance support — drywall, doors, flooring, painting, and carpentry — not a 24/7 emergency call centre. True after-hours emergencies still route to your existing on-call vendor. Cornerstone handles the routine work that keeps a building in good shape day to day.
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Drywall repair and patching, interior and entrance door replacement, hardware repair, and general carpentry finish work — the everyday calls that keep a building presentable.
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Flooring repair and replacement, painting for common areas and unit touch-ups, and finish repairs that come up between larger projects.
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Make-ready work between residents or tenants — repairs, paint, and finish work handled on a predictable timeline so a unit doesn't sit empty.
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Smaller renovation and upgrade work that doesn't need a full proposal package — scoped, priced, and completed without slowing down the rest of the building.
Mike BrockFounder, Cornerstone Construction
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CALL 1-888-404-7383
Durham Region's trusted renovation contractor. Led by Mike Brock since 2017. We Listen, We Build, We Deliver.
