Our Process & Standards

How We Work

These are the standards we hold ourselves to on every job — residential, commercial, or insurance restoration.

Our Code of Ethics

The Professional Foundation

1.

Financial Integrity

Fixed-Price Certainty

Once the Project Diagnostic is complete, the price on the contract is the price on the invoice. We do not lowball estimates to win jobs.

Transparent Change Management

If scope must change due to unforeseen structural issues, work stops until a written adjustment is reviewed and signed. No surprise billings.

Trade Partner Fairness

We pay our specialist trades fairly and on time so they bring their best work to your home.

2.

Professional Accountability

The 5-Year Warranty

We stand behind our structural and finish work for 60 months. If a detail isn't right, we return to fix it.

Licensed and Insured

We maintain $5M in liability insurance and full WSIB compliance to protect our clients, our team, and the community.

Direct Access

Every client has a direct line to Mike Brock. Clear, human communication — not automated systems.

3.

Data Ethics

Privacy First

Your property data and contact information are never sold. We use secure GHL portals to keep your project details confidential.

Pillar 2 — Site Etiquette

The Homeowner's Bill of Rights

1.

The Sanctuary Mindset

  • Guest StatusWe are guests in your home. We treat your property, your family, and your neighbours with more respect than our own.
  • The Side-Lay RuleDrills and drivers are always laid on their side — never stood upright on finished surfaces.
  • Universal ProtectionNo tool, ladder, or material touches a finished surface without a protective barrier.
2.

Surgical Cleanliness

  • The 30-Minute RuleThe final 30 minutes of every workday are dedicated to site organisation and broom-sweeping.
  • Indoor Air QualityWe use HEPA-filtered dust extraction and floor protection to keep construction dust out of your living spaces.
  • Zero-Waste PolicyAll food waste and wrappers are removed from the site daily. Nothing left in interior bins.
3.

Privacy and Security

  • Digital SecurityWe never geotag your location or post photos of family members or personal belongings on social media.
  • Pet and Gate ProtocolGates and exterior doors are secured immediately after passing through to protect your family pets.
  • Washroom EtiquetteWe use only the designated service washroom and leave it spotless at the end of every shift.

Durham Region's trusted renovation contractor. Led by Mike Brock since 2017. We Listen, We Build, We Deliver.

Service Areas

  • Oshawa, ON
  • Whitby, ON
  • Bowmanville, ON
  • Clarington, ON
  • Ajax, ON
  • Pickering, ON
  • Newcastle, ON
  • Scarborough, ON
  • Whitchurch-Stouffville, ON
  • Port Perry, ON
  • Peterborough, ON
  • Port Hope, ON
  • Cobourg, ON
  • Northumberland County, ON
© 2026 Cornerstone Construction. All rights reserved. Licensed & Insured Ontario Corporation Serving Durham Region Since 2017
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