You have four routes in Ontario, and the order matters: check whether a permit was ever pulled, put the demand in writing, preserve your lien rights within the statutory deadline, and file with Consumer Protection Ontario. Small claims court handles disputes up to $35,000, which covers most septic work short of a full replacement.
The single most useful thing you can do in the first week is find out whether the job was permitted. An unpermitted septic installation is a regulatory problem for the contractor and a title problem for you, and it changes every conversation that follows.
Here’s the sequence, what each step costs, and how to avoid this in the first place. If you need an independent assessment of what was actually built before you argue about it, call (705) 702-5526.
The Quick Answer
| Step | Deadline | Cost |
|---|---|---|
| Confirm whether a permit exists | Do it first | Free, call the municipality |
| Independent inspection of the work done | Before anything is buried or altered | $300-$500 |
| Written demand with a deadline | Immediately | Free |
| Preserve a construction lien | 60 days from last supply of services | Legal fees, or self-file |
| Complaint to Consumer Protection Ontario | No hard deadline, sooner is better | Free |
| Small claims court | 2 years from discovering the problem | ~$100-$300 in filing fees, up to $35,000 claim |
| Report unpermitted work to the municipality | Anytime | Free |
Note the 60-day lien window. It’s the shortest clock on the list and the easiest to miss, and it’s the one that gives you real leverage against a contractor who has moved on to other jobs.
Step One: Was There Ever a Permit?
Call the City of Kawartha Lakes Building and Septic Division and ask whether a septic permit exists for your address, and what stage it’s at. This takes one phone call and costs nothing.
Three possible answers, each pointing a different direction.
A permit exists and inspections were passed. Your dispute is about workmanship or money, not legality. Go to the demand letter and, if needed, small claims.
A permit exists but the required inspections were never done. The work is incomplete in the regulator’s eyes. The municipality has a direct interest in this, and the contractor has an obligation that hasn’t been discharged.
No permit exists. This is the serious one. Unpermitted septic work in Ontario is a violation under Ontario Regulation 332/12, it will surface the moment you try to sell, and the liability for an unpermitted system tends to land on the property owner rather than the vanished contractor. Our guide on septic fines for non-compliant systems covers the exposure.
Step Two: Document What Exists, Before It’s Buried
If the work is partly done, photograph everything now, with dates. If any part of the system is open, that’s your only chance to see it.
Get an independent inspection. A full inspection runs $300 to $500 and gives you something a court or a regulator will take seriously: a written description of what was installed, by someone with no stake in the argument. Our guide on reading a septic inspection report explains what you’re looking at.
Do not have someone else finish or bury the work before it’s documented. It feels urgent, especially if you have an open excavation in November, but a covered system is a system nobody can inspect, and you have just destroyed your own evidence.
If there’s an open excavation and a safety risk, fence it. That’s reasonable mitigation and no one will fault you for it.
Step Three: The Written Demand
Put it in writing even if you’ve been calling for weeks. Email is fine and is easier to prove than a phone call.
Keep it factual and short:
- What was agreed, with the date and the quoted amount
- What was paid, with dates and method
- What was delivered and what wasn’t
- What you want: completion by a specific date, or refund of a specific amount
- A deadline, typically 10 to 14 days
Send it, keep the sent copy, and don’t editorialise. The value of this letter is that it establishes you gave a clear opportunity to fix things, which is the first question anyone will ask later.
Step Four: The 60-Day Lien Clock
Under Ontario’s construction lien framework, a lien has to be preserved within 60 days of the last supply of services or materials to the project. Miss it and that remedy is gone.
This cuts both ways and it’s worth understanding. A contractor who hasn’t been paid can lien your property. But the lien framework also creates the holdback rules that give you leverage when work is abandoned partway.
If the amount at stake is significant, get a lawyer’s advice inside that 60-day window rather than after it. A single consultation is cheap relative to a $20,000 septic installation.
Step Five: Consumer Protection and Small Claims
Consumer Protection Ontario takes complaints about contractors and can act on patterns of behaviour. Filing is free. Realistically it won’t get your deposit back quickly, but it builds the record that eventually stops someone doing it to the next person.
Small claims court handles up to $35,000, which covers most septic disputes short of a full system replacement at $15,000 to $35,000. Filing fees are modest, you don’t need a lawyer, and the process is designed for exactly this. The limitation period is generally two years from when you discovered the problem.
What wins these cases is boring documentation: the quote, the payments, the written demand, the independent inspection report, and dated photographs. What loses them is a verbal agreement and a folder of text messages.
Preventing the Next One
Most of this is avoidable at the hiring stage, and the checks take an afternoon.
Understand who does what. A designer, an installer and an engineer are different roles with different obligations, and on many jobs you need more than one. Our guide to designer vs installer vs engineer explains the split.
Make the permit the contractor’s stated responsibility, in writing. Then verify independently that it was actually pulled. “I’ll take care of the permit” is the single most common sentence in these stories.
Never pay a large deposit up front. Materials deposits are normal. Paying half the job before anything happens is not, on a job of this size.
Tie payments to inspection milestones. The regulator inspects at defined stages. Paying at those stages means you’re paying for work that a third party has confirmed exists.
Get the warranty terms in writing. Our septic warranty guide covers what’s normally offered and what isn’t.
A property owner near Bobcaygeon paid $9,000 up front in 2024 to a contractor who’d been recommended by a neighbour. Excavation started, then stopped. No permit had ever been applied for. Because they called the municipality in the first week rather than the third month, the open excavation was documented, the lien was preserved in time, and they recovered most of it in small claims eleven months later. The eleven months is the part nobody tells you about.
Frequently Asked Questions
What can I do if a septic contractor took my deposit and never came back?
Start by confirming with the municipality whether a permit was ever pulled, then send a written demand with a firm deadline, and preserve your construction lien rights within 60 days of the last work performed. File a complaint with Consumer Protection Ontario, and use small claims court for amounts up to $35,000. Document everything with dates before any part of the site is altered.
Who is liable for unpermitted septic work, me or the contractor?
Practically, the property owner carries it. The contractor may face penalties, but the non-compliant system is attached to your land, it will be discovered when you sell, and the order to correct it goes to the owner. This is why verifying the permit yourself, rather than trusting an assurance, is worth the one phone call it takes.
How long do I have to sue a septic contractor in Ontario?
The general limitation period is two years from when you knew, or reasonably should have known, about the problem. That’s a longer clock than the 60-day construction lien deadline, so the lien is what you need to move on first. Small claims court covers disputes up to $35,000, and most septic work short of a full replacement fits inside that.
Should I get someone else to finish the job before the dispute is resolved?
Not before the work is documented by an independent inspection and photographed. Once a system is covered, nobody can assess what was actually installed, and you have effectively destroyed the evidence in your own case. If there’s an open excavation creating a hazard, fence it off; that’s reasonable and won’t be held against you.
How do I avoid this happening on the next job?
Verify the permit yourself with the municipality rather than accepting an assurance. Keep the deposit small and tie the remaining payments to the regulator’s inspection milestones. Get the scope, the warranty and the timeline in writing before work starts. And be clear on who is acting as designer, installer, and inspector, because on many jobs those are three different people.
Need an Independent Read on the Work?
If you need to know what was actually installed on your property, before you argue about it or pay anyone else to finish it, an inspection gives you a written answer from someone with nothing at stake.
Call (705) 702-5526 or book an inspection. Serving the whole City of Kawartha Lakes, with no travel surcharge and no minimum distance.