How to Choose a Renovation Contractor in Hamilton

1. Get written, itemized quotes

Ask at least two or three contractors to visit and quote the same scope of work. A useful quote is itemized — it shows what's included (demolition, materials, permits, disposal, finishing) and what isn't — so you can compare like with like.

Be cautious of a quote far below the others. It often means something has been left out, or will come back later as an extra.

2. Check insurance and WSIB

Ask for a certificate of liability insurance and check that it's current. It protects you if your property is damaged during the work.

Ask for a WSIB clearance certificate as well. It confirms the contractor's workplace insurance account with the Workplace Safety and Insurance Board is in good standing.

3. Verify licences for regulated trades

General contractors don't hold a provincial licence in Ontario, but several trades they coordinate are regulated:

• Electrical: work done for hire must be performed by a Licensed Electrical Contractor. Ask for the 7-digit ECRA/ESA licence number and check it with ESA's Find a Contractor tool.
• Gas: gas appliances and piping must be installed by a TSSA-registered contractor.
• Plumbing: plumbing is a compulsory trade in Ontario, so the work must be done by a licensed plumber or a registered apprentice.
• New homes: anyone building a new home for you must be licensed by the Home Construction Regulatory Authority (HCRA). You can look builders up in the Ontario Builder Directory.

4. Ask who handles permits

Structural changes, new or moved plumbing, basement finishing and additions usually need a building permit, and electrical work needs an ESA permit. A professional contractor will tell you which permits your project needs and apply for them.

Be wary of anyone who suggests skipping permits or asks you to apply for them yourself for work they're doing. Unpermitted work can cause problems with insurance claims and when you sell.

5. Read reviews and ask for references

Read reviews on Google and other platforms, paying attention to how the contractor handled problems as well as praise. Ask for photos of similar projects and, for larger jobs, references from recent clients.

6. Get a written contract

Before work starts, make sure the contract includes:

• A detailed description of the work and materials
• The total price and what happens with changes (change orders in writing)
• A payment schedule tied to progress, not just dates
• Start and estimated completion dates
• Who obtains permits
• Warranty terms for workmanship
• Clean-up and disposal responsibilities

Under Ontario's consumer protection rules, if you sign a renovation contract at your home rather than at the contractor's place of business, you generally have a 10-day cooling-off period to cancel after receiving your copy of the written contract.

Red flags to watch for

• Cash-only pricing or no written contract
• Pressure to sign the same day
• A large upfront payment unrelated to material costs
• No proof of insurance
• Suggesting the work doesn't need permits when it clearly involves structure, plumbing or electrical