The short answer
Unpermitted work is not usually a reason to walk away from a house, and it is always a reason to slow down, price it and decide who is fixing it. The three real exposures are insurance, financing and resale — and the City adds a fourth: enforcement. What the City says is blunt. Where work was done without a permit and nothing has been done to correct it, the possible consequences include enforcement action from a City inspector, a fine for building without a permit, having to undo completed work, future legal and financial problems when you sell or make an insurance claim, and ending up doing more work than you planned or budgeted.
And the liability follows the property, not the person who did it. As a homeowner you are responsible for paying penalties even if you hired a contractor who assured you no permit was needed, and the homeowner is ultimately responsible for previously concealed work — including work done by an owner three owners ago.
"The previous owner did it" is not a defence. When you buy the house, you buy the problem.
If you are the buyer
Find it before you are firm. That means two things happening in the same window:
- Pull the permit record. A City Online Building Permit Status report lists historical, current and pending permits for the address. Read it against what you actually saw at the showing — a finished basement with nothing on file, a deck that does not appear, a garage with no record. Our page on what needs a permit and how to check it walks through the lookup.
- Use the inspection properly. An inspector is not a permit auditor, but they are very good at identifying work that was done without one: undersized egress windows, suspicious headers, ceiling height that does not meet code, a suite with no fire separation, electrical that was clearly not inspected. Set a condition period long enough to get answers rather than impressions.
Then work the three exposures:
- Insurance. This is the sharp end. If a fire or water loss originates in unpermitted work — unpermitted wiring is the classic — an insurer can investigate coverage, and at minimum you are arguing when you least want to. Tell your insurer what is there and get the answer in writing during the condition period.
- Financing. Unpermitted work affects the appraisal. A basement suite with no permit may not count toward value or toward rental income for qualifying, which can change what you can borrow. Lender appetite varies; ask your mortgage broker with the specifics.
- The City. An open enforcement file or an order to comply is a different category from quiet unpermitted work. Ask.
What to do about it in the offer depends on the item. A deck without a permit is cheap to resolve relative to a suite with no fire separation and no egress. Price the remedy, not the anxiety — and if the remedy requires opening walls, know that going in.
Unpermitted basements and suites, specifically
This is the most common version in Calgary, and the highest-consequence one, because it is usually two problems wearing one coat: the development was not permitted, and the suite is not a legal suite. Those are separate questions. A basement can be permitted as finished living space and still not be an approved secondary suite; a suite can exist for twenty years and still be unapproved.
The practical items an inspector or the City will look at are egress window size and operation, ceiling height, fire separation between units, smoke and carbon monoxide alarms, separate heating or an approved arrangement, and the electrical. Any one of them can be the reason a retroactive permit turns into a real renovation.
We have separate pages on secondary suites in Calgary, on whether the City can shut down an illegal suite, and on disclosing an illegal suite when selling. If a suite is part of why you are buying the house — because you are counting on the rent — read those first.
If you are the seller
You have three options and only three.
- Get it permitted retroactively. The City's own process: apply for the proper permit and call for inspection. Be realistic about what that means — the application follows the same requirements as an application for new work, and work concealed behind drywall may have to be exposed for inspection. Sometimes that is a formality. Sometimes it means taking a finished basement back to studs.
- Remove it. Occasionally cheapest, for a small structure or a deck in the wrong place.
- Disclose it and price it. Entirely legitimate, and often the right commercial answer, as long as it is genuinely disclosed and the buyer can see what they are taking on. Get a contractor's written scope and quote for making it compliant, and hand that to buyers. It converts an unknown into a number, which is the same trick that works with selling a Calgary home as is.
What is not an option is staying quiet about something you know. In Alberta a known material latent defect must be disclosed — significant, hidden problems, which unpermitted structural or electrical work frequently is. And the practical risk is high: the buyer's inspector looks, the buyer's lawyer sees the Certificate of Compliance, and the buyer's lender sees the appraisal. The odds of it staying hidden through a modern Calgary transaction are poor, and the cost of it surfacing after possession is much worse than the cost of disclosing it before.
What it does to price
Less than sellers fear and more than buyers admit. A documented, disclosed, quoted item gets negotiated once. An undocumented one gets discounted by the buyer's worst-case guess, because the buyer has no way to bound it — and worst-case guesses are always bigger than real quotes. That gap is the actual cost of not dealing with it.
Sources
- City of Calgary — Building permit process: common questions (consequences of building without a permit; homeowner responsibility for penalties and concealed work; obtaining a permit after the fact and exposing concealed work for inspection).
- City of Calgary — Inspections for homeowners.
- City of Calgary — Certificate of Compliance.