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Cornerstone Construction

Oshawa general contractor for water damage restoration, mould remediation and structural drying, with rebuild work after damage across Durham Region.

What they do

The firm restores homes after water damage, covering structural drying, water damage restoration and mould remediation. Its general contracting work also includes rebuilding after damage, so one company can take a job from drying out through to finished walls and floors. Service runs from Oshawa through Whitby, Ajax and Pickering. Insurance claims form part of the work, with the firm coordinating with the insurance adjuster from demolition through to rebuild. Estimates are free and can be requested online or arranged on site. Completed work carries a five-year warranty. The office is open Monday to Friday during daytime hours and is closed on weekends.

Source: cornerstoneconstruction-inc.com (opens in a new tab)

  • Water damage restoration
  • Mould remediation
  • Structural drying
  • Rebuild after damage
  • Fire and smoke damage

Listed under Water damage and mould remediation

Where they work

Oshawa, Ontario

What we checked

  • Its own website lists this work

Checked 12 Nov 2026, from public sources.

Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.

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