# How to Vet a Renovation Contractor: Complete Checklist for GTA Homeowners

**URL:** <https://home.renovation.reviews/t/how-to-vet-a-renovation-contractor-complete-checklist-for-gta-homeowners/46306>\
**Category:** DIY & Tutorials\
**Created:** [April 25, 2026, 5:44pm UTC](https://home.renovation.reviews/t/how-to-vet-a-renovation-contractor-complete-checklist-for-gta-homeowners/46306 "2026-04-25T17:44:04Z")\
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**Author:** ![BuildersLTD](https://home.renovation.reviews/user_avatar/home.renovation.reviews/buildersltd/32/14872_2.png) [@BuildersLTD](https://home.renovation.reviews/u/BuildersLTD)\
**Post date:** [April 25, 2026, 5:44pm UTC](https://home.renovation.reviews/t/how-to-vet-a-renovation-contractor-complete-checklist-for-gta-homeowners/46306/1 "2026-04-25T17:44:04Z")

</div>

After 50+ years and 30,000+ renovation projects across the GTA, here is the checklist LF Builders recommends every homeowner work through before hiring any contractor.

## Step 1: Verify Credentials and Insurance

Request these before the quote — not after you have fallen in love with their pitch:

- **WSIB Clearance Certificate** — Protects you if a worker is injured on your property. Verify the clearance number directly at wsib.ca.
- **Certificate of Insurance** — $2M+ commercial general liability minimum. Ask to be named as an additional insured on the certificate for the duration of your project.
- **Business registration** — Verify they are a registered Ontario business via the Ontario Business Registry. Registered business means accountability and a paper trail.
- **Trade license numbers** — ESA license for electricians, Ontario plumbing license for plumbers, TSSA registration for gas fitters. Ask for the number; look it up yourself.

## Step 2: Review the Written Quote

A proper quote is not a lump sum. It is a line-item document.

- Scope of work with material specifications (brands, grades, dimensions where relevant)
- Line-item pricing for labour and materials
- Confirmation that permits are included and will be pulled in the contractor’s name
- A clear statement of what is and is not included

If a contractor gives you a one-page lump-sum quote with no specification, you cannot evaluate it and you cannot hold them to it.

## Step 3: Know the Red Flags

Walk away from any contractor who:

- Asks for more than 15% deposit upfront (10% is the GTA industry standard)
- Refuses to pull permits (“permits just cause delays” — this creates liability at resale)
- Pressures you to sign the same day or claims the price is only good today
- Insists on cash only with no paper trail
- Cannot provide a physical business address
- Pushes a vague scope with no line-item pricing

## Step 4: Review the Contract Terms

Before signing, confirm these terms are present:

- **Milestone-based payment schedule** — payments tied to specific completed stages, not calendar dates
- **10% holdback** — held until substantial completion AND all deficiencies corrected and signed off
- **Written change order process** — any change above a defined threshold requires a written change order before work proceeds
- **Warranty terms** — minimum one year on labour; material warranties passed through from manufacturer in writing

A contract that protects you is not unusual — it is standard practice for any reputable trade.

## Step 5: Call References Directly

Phone, do not email. Ask:

- Did they pull all required permits and pass inspections?
- Were there change orders? How were they handled?
- How did the contractor communicate when there were problems or delays?
- Would you hire them again without hesitation?

One reluctant “yes” on that last question is worth more than ten enthusiastic ones.

* * *

## More from LF Builders and home.renovation.reviews

- LF Builders has built on trust across the GTA for 50+ years: [lfbuilders.ca](https://lfbuilders.ca)
- Renovation planning and hiring guides: [blog.lfbuilders.ca](https://blog.lfbuilders.ca)
- Related: [Complete 2026 Renovation Cost Guide for Toronto & GTA](https://home.renovation.reviews/t/complete-2026-renovation-cost-guide-for-toronto-gta-homeowners/46305)
- Samm Simon is running 251 km for cancer research — [support the run at sammsimon.ca](https://sammsimon.ca)

Share your own contractor vetting experiences and red flags below — this community has seen everything.