How to choose a contractor in Ontario

What credentials should you verify?

Anyone can call themselves a contractor, so verification protects you. Before you hire, confirm each of these:

• WSIB clearance. A valid Workplace Safety and Insurance Board clearance certificate means workers are covered. Without it, you can be exposed if someone is hurt on your property.
• Liability insurance. Ask for proof of commercial general liability insurance and confirm it is current.
• Written contract. A real contractor works from a written agreement, not a handshake.
• References and portfolio. Ask for recent projects like yours and speak to past clients.
• HCRA for new homes. If you are building a new home or major addition, builders and vendors are licensed through the Home Construction Regulatory Authority (HCRA) with Tarion warranty coverage.

How should you compare quotes?

Collect at least three quotes, and compare what is actually included rather than the final number. A cheap quote is often cheap because it leaves things out. Look for:

• An itemized scope that lists materials, allowances, and labour
• Clear allowances for finishes you have not chosen yet
• What is excluded, so you can spot gaps
• A payment schedule tied to milestones, not a large lump sum up front
• A realistic timeline with a start and finish

If two quotes are far apart, the difference is almost always scope or quality, not a bargain. Understanding what a project should cost helps you read quotes with a clear eye.

What should a good renovation contract include?

A written contract protects both sides and is a sign you are dealing with professionals. A solid Ontario renovation contract should include:

1. A detailed scope of work and specifications
2. Total price, allowances, and how changes (change orders) are priced
3. A payment schedule tied to progress milestones
4. Start and completion dates
5. Proof of WSIB and insurance
6. Warranty terms for workmanship
7. How permits and inspections are handled

We work from a clear contract and back our workmanship with a two-year written warranty.

What are the red flags to avoid?

Walk away, or at least ask hard questions, if you see any of these:

• A cash-only deal or a request to avoid a contract
• A large deposit up front, well beyond what is needed to start
• No WSIB clearance or no proof of insurance
• Pressure to skip permits to save time or money
• No written scope, or a quote that is a single lump sum with no detail
• No verifiable address, references, or finished projects

Skipping permits is one of the clearest warning signs, because it puts the risk on you. See why in our building permit guide.

Questions to ask before you hire

1. Are you WSIB cleared and insured, and can I see the certificates?
2. Can I see two or three finished projects like mine and speak to those clients?
3. Who is my point of contact day to day?
4. How do you handle permits and inspections?
5. How are changes and unexpected conditions priced?
6. What warranty do you offer on your workmanship?

You can start with our client reviews and portfolio to see how we answer those questions in practice.

Zeybek Construction

General contractors, Ontario

Written by the Zeybek team from more than two decades of renovation and construction work across Ontario, from Toronto and the GTA to Kitchener, Waterloo, and beyond. We build kitchens, bathrooms, whole homes, additions, and commercial spaces, and we handle permits and inspections as part of the job.

Related guides

Kitchens

How much does a kitchen renovation cost in Ontario?

Permits & process

Do you need a building permit for a renovation in Ontario?

Buyer's guide

What home renovations add the most value in Ontario?

Last updated June 30, 2026. This guide is general information for Ontario homeowners and is not a substitute for a site-specific quote or municipal advice. Costs and rules vary by municipality and project.