Hiring the wrong contractor is the most common reason renovations go over budget, run behind schedule, or result in subpar work. In a market like Toronto, where demand for renovation services is high and contractors range from highly skilled professionals to fly-by-night operators, knowing how to evaluate and choose the right contractor is essential.
This guide is based on 20++ years of experience in the renovation industry. Whether you are planning a small bathroom update or a full home renovation, these principles will help you make an informed, confident choice.
The Essential Contractor Checklist
Before hiring any contractor in Ontario, verify that they meet all of the following criteria:
Valid Business Registration
The contractor should be a registered business entity (corporation or sole proprietorship) with a valid HST number. Ask for their business number and verify it. A contractor operating without proper business registration is a significant risk.
Liability Insurance ($2M+ Coverage)
Verify that the contractor carries commercial general liability insurance with a minimum of $2 million in coverage. This protects you if the contractor's work causes property damage or injury. Ask for a certificate of insurance and confirm it is current by contacting the insurer directly.
WSIB Clearance Certificate
A current Workplace Safety and Insurance Board clearance certificate proves that the contractor is in good standing and their workers are covered for workplace injuries. Without this, you could be liable if a worker is injured on your property. Verify the certificate on the WSIB website.
Written Workmanship Warranty
A reputable contractor stands behind their work with a written warranty. Look for a minimum of 1 to 2 years of coverage on workmanship defects. The warranty should be clearly outlined in your contract with specific terms about what is covered and how to make a claim.
Verifiable References and Portfolio
Ask for at least 3 references from recent projects similar to yours. A quality contractor will be happy to provide them. Follow up: call the references and ask about communication, timeline adherence, quality of work, and whether they would hire the contractor again. Also review their online portfolio and before/after photos.
Detailed Written Contract
Every renovation should be governed by a written contract that specifies the scope of work, materials, timeline, payment schedule, warranty terms, and dispute resolution process. Verbal agreements are insufficient and unenforceable for renovation projects of any significant size.
Permit Handling Experience
For any project requiring a building permit, your contractor should be experienced in preparing and submitting permit applications, coordinating with municipal building departments, and scheduling required inspections. This is a core competency, not an extra service.
Clear Communication Practices
From the first consultation, evaluate how the contractor communicates. Do they return calls and emails promptly? Do they explain things clearly? Do they listen to your concerns? Communication quality during the quoting phase is a strong predictor of communication quality during the project.
Red Flags to Watch For
These warning signs should give you pause before hiring a contractor. Any one of these is a reason to look elsewhere:
Demanding large upfront payments
Any contractor asking for more than 15% to 20% as a deposit is a risk. Some dishonest operators collect large deposits and then delay or abandon projects. A milestone-based payment schedule is the industry standard.
No written contract or vague estimates
A contractor who resists putting details in writing, provides vague or handwritten estimates, or says 'we'll figure it out as we go' is not operating professionally. Every detail should be documented.
Cannot provide proof of insurance or WSIB
If a contractor hesitates, makes excuses, or says they 'don't need' insurance or WSIB coverage, walk away. These are non-negotiable requirements in Ontario.
Pressure to start immediately
High-pressure tactics like 'this price is only good today' or 'we have a cancellation and can start tomorrow' are designed to prevent you from doing proper due diligence. Quality contractors have scheduled work and plan ahead.
Significantly lower price than other quotes
If one quote is dramatically lower than others, it usually means they are cutting corners on materials, using unlicensed workers, skipping permits, or planning to add costs later through change orders.
No references or refuses to share past work
A contractor with no references, no portfolio, and no verifiable track record is an unknown risk. Even newer contractors should be able to provide some form of reference from previous work.
Suggests skipping permits to save money
A contractor who suggests bypassing building permits is not only breaking the law but also putting your home, safety, and future resale value at risk. This is a serious red flag.
Poor communication during the quoting process
If they are slow to return calls, miss appointments, or give unclear answers during the quoting stage, communication will only get worse once they have your deposit and are managing multiple projects.
Questions to Ask During Your Consultation
A consultation is your opportunity to evaluate the contractor. Here are the key questions to ask:
How long have you been in business?
Can you provide your WSIB clearance and insurance certificates?
Do you handle building permits?
Who will be the project manager / main point of contact?
Will you use subcontractors? Are they insured?
What is your typical payment schedule?
What warranty do you offer on workmanship?
Can I see examples of similar completed projects?
Can you provide references I can contact?
How do you handle change orders?
What is your process for keeping the worksite clean?
How often will you provide progress updates?
Understanding the Quote Process
Getting quotes for a renovation in Toronto requires some preparation. Here is how to get the most useful, comparable quotes:
- Get 3 quotes: This gives you a fair range and helps identify outliers (too high or suspiciously low).
- Define your scope clearly: The more specific you are about what you want, the more accurate and comparable the quotes will be.
- Compare apples to apples: Ensure each contractor is quoting for the same scope, similar materials, and equivalent quality levels. A lower quote may simply reflect lower quality materials.
- Ask what is included: Clarify whether the quote includes permits, demolition, disposal, painting, touch-ups, and cleanup. These are common items that some contractors include and others do not.
- Understand allowances: Some quotes include allowances for items like tiles, fixtures, or countertops. Make sure the allowance amounts are realistic for the quality level you want.
Important: The cheapest quote is rarely the best value. Focus on the overall quality of the contractor's proposal, their communication, their credentials, and their track record. A slightly higher quote from a reputable, insured, and experienced contractor almost always costs less in the long run than a cheaper quote from an unvetted one.
What Your Contract Should Include
A comprehensive written contract protects both you and the contractor. Before signing, make sure the contract includes:
- Detailed scope of work: A clear, itemized description of all work to be performed, room by room.
- Materials and specifications: Specific brands, models, colours, and quantities for all materials, or clearly stated allowance amounts.
- Total price and payment schedule: The fixed contract price with a milestone-based payment schedule.
- Project timeline: Start date, expected completion date, and any key milestones.
- Change order process: How changes will be handled, priced, and approved in writing before extra work proceeds.
- Warranty terms: The length and scope of the workmanship warranty, including what is covered and how to make a claim.
- Insurance and WSIB references: Policy numbers and confirmation that coverage will be maintained throughout the project.
- Dispute resolution: How disagreements will be handled (mediation, arbitration, etc.).
- Cleanup and disposal: Confirmation that the contractor is responsible for removing all debris and leaving the site clean.
- Cancellation terms: Under what conditions either party can cancel, and any applicable penalties or refund terms.
What to Expect During the Project
Once you have hired the right contractor, here is what a professional renovation process should look like:
- Regular communication: Your contractor should provide consistent updates on progress, upcoming milestones, and any issues that arise. You should never have to guess what is happening on your project.
- Clean and safe worksite: Professional contractors maintain a clean, organized worksite with proper dust barriers, protective coverings on floors and surfaces, and safe conditions for your family.
- Respect for your home and schedule: Workers should arrive on time, work within agreed-upon hours, and be respectful of your living space.
- Transparent change management: If unexpected issues arise (and they sometimes do in renovations), your contractor should communicate the issue, present options with pricing, and get written approval before proceeding.
- Proper inspections: For permitted work, your contractor should schedule and pass all required inspections before covering up work.
- Final walkthrough: Before the last payment, a thorough walkthrough should be conducted where any issues or touch-ups are identified and resolved.
The Leo Constra Difference
At Leo Constra, we meet every item on this checklist and more. With 20++ years of experience, full insurance and WSIB coverage, a 2-year workmanship warranty, transparent milestone-based pricing, and a portfolio of completed projects across the GTA, we make choosing the right contractor easy.