Early access in Canada. We are still building our directory for Canada. The profiles here show real public evidence from named sources, but coverage is limited and our checks are not yet as complete as on our UK site. Treat this as a preview, not a full picture.

Extension / renovation contractors in Canada

1,510 extension / renovation contractors across Canada, each compared on their portfolio, credential evidence, past work and reviews: the evidence that matters before a project you'll live with. Add your area below to compare their work near you.

No ads · No paid placement · Ranked on evidence only

Extension / Renovation Contractors

Showing the top 12 of 1,510 extension / renovation contractors, sorted by Trust Score.

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Find extension / renovation contractors in Canada

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What to check when hiring extension / renovation contractors in Canada

MyTrustedTraders ranks on independent public evidence. No ads, no paid placement. Use these checks alongside the evidence on each profile before you decide who to contact.

  • Trade licensing in Canada is set by each province or territory. Electrical, gas and plumbing are licensed trades almost everywhere (for example ESA for electrical and TSSA for gas in Ontario), so check your provincial regulator that the contractor is certified for the work before you hire.
  • A construction lien is a real risk: in every province an unpaid subcontractor or supplier can register a lien against your home even if you already paid the main contractor. Hold back the statutory amount (commonly around 10%) and get signed lien waivers as you pay.
  • Ask to see a portfolio of completed work like yours, plus recent references you can contact.
  • Check the credentials and registrations that matter for this work, and that they are current.
  • Get a written, itemized quote with scope, assumptions and a staged payment schedule.

How to judge an extension / renovation contractor

Independent, no-ads guidance. The trade-specific checks that matter most, the warning signs, and what to ask before you hire. Use it alongside each contractor’s public evidence above.

Verify before you hire

  • An addition or major renovation needs municipal building permits and inspections, and structural changes need engineered, sealed drawings from a P.Eng: confirm the contractor handles permits and uses licensed electrical, gas and plumbing trades.
  • For substantial work, check whether a provincial new-home/major-renovation warranty applies (e.g. Tarion/HCRA in Ontario, BC Housing in BC, RBQ/GCR in Québec) and whether the contractor must be licensed for it.
  • Use a written contract with a clear scope and payment tied to inspected stages, and understand construction-lien (builders'-lien) holdbacks that protect you if a subcontractor isn't paid.
  • Check liability insurance and a current workers' compensation clearance (WSIB/WorkSafeBC/WCB).

Warning signs of a rogue contractor

  • Skips permits, or does structural, electrical or gas work without licensed trades and sealed drawings.
  • Won't enrol qualifying major work for warranty where the province requires it.
  • Demands large up-front payments or cash, with no lien waivers from subcontractors.
  • No written contract, vague payment stages, or no proof of insurance and WCB coverage.

Questions to ask before you hire

  • Will you pull all permits and use licensed trades, with engineered drawings for structural work?
  • Does a provincial warranty apply, and are you licensed for it?
  • How is payment tied to inspected stages, and will you provide lien waivers?
  • Do you carry liability insurance and a current WCB/WSIB clearance?

Frequently asked questions

How do I choose a trustworthy extension / renovation contractor?
Compare the public evidence on each profile: how many independent reviews they have and across how many named sources, the rating and how recent it is, any credential evidence, and the company status. An extension / renovation contractor backed by several named sources is harder to fake than one found in only one place.
Does MyTrustedTraders rank or recommend extension / renovation contractors for payment?
No. There are no ads and no paid placement. Extension / renovation contractors are ranked only by the strength of independent public evidence. No one can pay to rank higher, add a badge, or change their reviews.
Where do the reviews come from?
They're imported from named public review sources and always shown with the source named. They aren't reviews written on MyTrustedTraders. We cross-check the same business across sources rather than creating new reviews.
What should I check before hiring an extension / renovation contractor?
Confirm credentials and insurance directly with the extension / renovation contractor, get a written quote, and run the Cowboy Checker on the business first. MyTrustedTraders helps you shortlist on the evidence. It doesn't replace your own checks before you hire.

More ways to check who to trust

Free, independent checks. No ads, no paid placement.

  • Rogue Contractor Check

    Spot the warning signs of a dishonest business before you hire.

  • Company Health Check

    Check whether the company behind a business is active, dissolved, or in liquidation.

  • Licence Check

    A licence number from a van or quote, checked against every public register included here in one search.

Or browse contractors by tradeAll checks and tools