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If renovation work is defective, unfinished or late and the contractor wants payment, start by separating what was promised, what was delivered and what the invoice charges for. Whether you owe the balance or can dispute part of it depends on your agreement, the evidence and any payment or lien rules that apply. A final invoice may have a deadline even while repairs are being discussed.
This guide is for Ontario homeowners dealing with a contractor on a home renovation or repair. If you are a contractor, subcontractor or supplier trying to collect, see our guide to unpaid construction work in Ontario.
Key takeaways
- Compare the promise with the work. The scope, changes, photos and messages help show what was agreed and what is still missing.
- Separate the amounts. A charge for disputed work, a repair cost and a statutory holdback raise different questions.
- Check dates early. A payment notice, lien or legal claim can have its own deadline while discussions continue.
If you have a final invoice, a payment demand, a lien notice or a pending sale or refinance, tell us the relevant dates when you inquire. We check conflicts and availability and explain the consultation scope and any fee before you book. An inquiry does not retain the firm or confirm that we can meet a deadline.
Illustrative image. The person and property shown are not from a Legal Route matter.
What did you and the contractor agree to?
Look at the original scope, price, payment milestones and completion dates. A signed contract may answer those questions, but a quote, drawings, invoices, messages and payment records can also help show the arrangement. Ontario’s consumer protection rules require many home renovation agreements to be in writing. The effect of missing paperwork depends on how the agreement was made and the facts.
Separate the original work from changes proposed later. An item may have been included in the original price, approved as extra work, or invoiced as an extra without clear approval. Compare what each side said about the change, its price and any effect on the schedule.
Is the issue a defect, unfinished work or delay?
Defective work concerns work that was done but may not meet the agreed or applicable standard. For services supplied under a covered consumer agreement, Ontario’s Consumer Protection Act, 2002 implies a warranty of reasonably acceptable quality. An independent assessment may help explain the defect and what it would take to correct it.
Unfinished work concerns an agreed item that was never completed. Compare what is missing with the scope and any written changes. Delay raises different questions: what completion date was agreed, whether it changed, what caused the delay and what loss can be shown.
Keep a dated record of the affected areas, the communications about them and any repair estimates. If the condition is likely to change, document it while it is still visible, where safe to do so.
Can the contractor charge more than the estimate?
When a covered consumer agreement includes an estimate, Ontario law generally limits the charge to 10% above that estimate. If the contractor charges more than the law allows, the consumer may be entitled to require the work at the estimated price. The parties can agree on a different estimate or price if the homeowner requires additional or different work. Check whether the figure was an estimate or a fixed price, what work it covered and whether any changes were agreed to.
Example: A higher bill for the same work
Suppose a covered agreement includes a $20,000 estimate and the contractor invoices $24,000 for the same work, with no agreed change to the scope or price. The general 10% ceiling on that estimate would be $22,000, using the same tax basis. That ceiling does not decide how much is owed if the work is defective or incomplete.
Can you hold back the final payment?
There is no single answer for every renovation. Review when the contract says payment is due, which charges you dispute and whether the contractor has met the relevant milestone. The value of unfinished work, the cost of correcting a defect and the balance on the invoice may all be different amounts.
A statutory holdback is separate. On a contract under which a lien may arise, Ontario’s Construction Act generally requires a payer to retain 10% of the price of services or materials as they are supplied. Release follows the applicable statutory rules. A dispute about a bill does not by itself determine how much to retain or when a holdback must be released.
Where the Act’s prompt payment rules apply, receipt of a proper invoice can trigger short payment and notice periods. The agreement, invoice, dates and any notices should be reviewed together before deciding how to respond.
What if there is a lien or a deadline?
A construction lien may give an eligible contractor, subcontractor or supplier security for unpaid work or materials supplied to an improvement. A lien on title can affect a sale or refinance. The existence of a lien does not decide whether it is valid or how much is owed.
A notice disputing payment, a construction lien and a civil claim can each have different deadlines. The starting date may depend on project events and the applicable version of the law. Some Construction Act rules changed on January 1, 2026, including holdback release rules, with transition provisions for earlier projects. Do not assume negotiations, a repair visit or a consumer complaint changes a deadline. If you receive a written lien notice, discover a lien on title or receive court papers, seek advice promptly.
What can resolve a renovation dispute?
Depending on the documents and condition of the work, a resolution could involve an agreed plan to complete or repair the work, a price adjustment or a settlement. A written repair plan can clarify what will be corrected, who will do it and how payment will be handled.
If the parties cannot agree, a consumer complaint, construction adjudication or a court claim may be relevant, depending on the issue and which rules apply. An independent report or itemized repair estimate can help assess the problem and cost. It does not by itself prove who is legally responsible.
How can Legal Route help with a renovation dispute?
We can review the contract, scope changes, invoices and correspondence to identify the disputed issues and relevant dates. A consultation can address a proposed response to a payment demand, a repair or settlement proposal, or whether a lien or civil claim needs separate review. We confirm who we can represent, check conflicts and agree on the work before an engagement begins.
Legal Route’s legal services are provided by lawyers licensed by the Law Society of Ontario.
What to have ready for an initial inquiry
- The parties and property: The names of the homeowner and contractor, the project location and a short description of the work.
- The issue: What was promised, what is wrong or unfinished, and what has been paid or demanded.
- The timing: The invoice and notice dates, the latest work date you know, and any upcoming sale, refinance or response date.
Wait for secure delivery instructions before sending your contract, photos or other private records.
Renovation dispute consultations in Brampton and across Ontario
In person in Brampton. Appointments are available by arrangement at our Brampton office, 2074 Steeles Avenue East, Unit 17.
Toronto and the GTA. We assist homeowners in Toronto and across Peel, York, Halton and Durham, including Mississauga, Vaughan, Oakville and Oshawa.
Virtual appointments across Ontario. Virtual appointments are available for suitable matters, including for homeowners in Hamilton, Barrie and Ottawa. We explain any document or attendance requirements for your matter. See our Ontario service areas.
Frequently asked questions about Ontario renovation disputes
Can there be an agreement if I never signed a formal contract?
There may still be evidence of an agreement, such as accepted quotes, texts, invoices and payments. Ontario’s rules about written consumer agreements can affect your rights. The absence of a signature alone does not decide what either party owes.
Should I give the contractor a chance to fix the work?
Review any notice, warranty or repair terms and whether further work would affect the evidence. A clear repair proposal may help. An urgent safety issue, an earlier failed repair or a dispute over access may change what is appropriate.
Can I raise a problem after I have made the final payment?
Payment does not necessarily end a claim or warranty right. What you signed, when you discovered the issue and any notice requirements or deadlines can affect your options.
Can a subcontractor claim a lien if I paid the main contractor?
A subcontractor may have lien rights if the statutory requirements are met. The effect on you can depend on the payments, notices and holdbacks and on the timing of the work. Have the documents reviewed before assuming payment to the main contractor resolves the issue.
Does a consumer complaint pause my deadline to go to court?
A consumer complaint is a separate process. Treat court and lien deadlines as separate questions and get them checked even if a complaint or settlement discussion is underway.
Discuss your renovation dispute with Legal Route
Tell us what is unfinished or disputed, what the contractor is asking for and when you need to respond. We can explain what a renovation dispute consultation would cover.
Request a renovation dispute consultation
Call 905-283-8514 or see Brampton office and appointment details. An inquiry does not create a lawyer-client relationship or confirm that we have accepted the matter.
Related Legal Route resources
Official resources
- Ontario: Your rights when starting home renovations or repairs
- Ontario’s Consumer Protection Act, 2002
- Ontario’s Construction Act
- Ontario: Construction Act transitional rules
- Ontario: Filing a consumer complaint
This article provides general Ontario legal information. Your rights and deadlines depend on the agreement, project dates, notices and your circumstances.