What to Ask Your Contractor Before Signing a Reno Contract

With lumber prices climbing, tariffs adding budget uncertainty, and spring booking season in full swing, 2026 is a year when more GTA homeowners than ever are getting quotes — and signing contracts they don’t fully understand.

After 50+ years in the trade, I can tell you: most disputes, delays, and blown budgets aren’t really about the quality of the work. They start before the first nail goes in — with what wasn’t clearly agreed on up front.

Here’s a practical checklist for any GTA homeowner signing a renovation contract this spring.

1. Is the contractor licensed and insured?

Ontario doesn’t require a general contractor licence, but specific trades do. Electricians, plumbers, and HVAC techs must all be licensed. Any reputable contractor should carry:

  • General liability insurance (minimum $2M is industry standard)
  • WSIB coverage for their workers

Ask to see both certificates before work starts. A legitimate contractor hands these over without hesitation. If they stall, that’s your answer.

2. Is the full scope of work in writing?

A verbal agreement is worth nothing when a disagreement starts. The contract should spell out exactly what work is included, which materials will be used, and where the work begins and ends.

In 2026, with material costs shifting — lumber is up roughly 18% year over year on some species, and the January carbon tax increase is pushing operational costs higher across the board — you want to know precisely what you’re getting for the price.

3. What’s the payment schedule?

A reputable contractor does not ask for full payment up front. Standard GTA practice:

  • 10% deposit to hold your spot
  • Milestone payments tied to completed stages — not calendar dates
  • 10% holdback held until the work is done, punch list signed off, and deficiencies corrected

If anyone is asking for 40 or 50 percent up front, walk away.

4. What permits will be pulled — and in whose name?

Permits protect you. Work done without permits becomes your problem at resale, and may not be covered by your home insurance if there’s a structural failure.

In Ontario, permits should be pulled in the contractor’s name. If a contractor says “we don’t need a permit” for structural work, electrical upgrades, or anything above grade — verify that independently before agreeing.

5. What are the warranty terms?

Ontario’s new home warranty rules (Tarion) cover new home builds — but for renovations, warranty terms are entirely between you and the contractor. Ask directly: how long is the workmanship warranted, and what’s the process if something fails in year two? Get it in writing. “We stand behind our work” is not a warranty.


At LF Builders, we’ve answered these questions the same way for over 50 years — clearly, in writing, upfront. We’re happy to talk through any of them.

If you’ve signed a reno contract recently and ran into issues — or if you have questions you’re not sure how to ask a contractor — drop them below. This is what this community is for.

And if you’re new here, the Most Commonly Asked Questions thread is a good starting point.

More from LF Builders

One thing I’d add specifically for 2026: ask your contractor directly how they’re handling material cost fluctuations in the contract language.

With US tariffs still creating uncertainty on lumber, steel, and aluminum, some contractors are inserting “material escalation clauses” that allow them to pass on cost increases beyond a certain threshold. That’s not always unreasonable — but you need to know it’s there before you sign, not after your bill comes in 20% higher than quoted.

What to look for in the contract wording:

  • Is there a cap on how much material costs can escalate before you’re notified and must approve?
  • What documentation does the contractor need to provide to justify a price increase (supplier invoices, not just verbal)?
  • Does the escalation clause apply to subcontractors as well, or just the general contractor’s direct costs?

If none of this language exists in the contract and they’re using a fixed-price structure, confirm that in writing. “Fixed price means fixed price regardless of material shifts” — get that sentence in there.

We’ve been using clear escalation language with clients at LF Builders for years, and it has saved a lot of confusion on both sides. The goal isn’t to protect the contractor — it’s to make sure neither party is surprised.

Has anyone here had experience with a contract dispute over material costs recently? Curious what others are seeing this spring.