Does a seller have to disclose unpermitted work in Alberta?

Short answer

Not automatically. In Alberta, a seller does not necessarily have to disclose every improvement completed without a permit. However, nondisclosure can create liability where the unpermitted work is material, hidden, unsafe, affects habitability, or is connected to defects the seller knew about or recklessly ignored.

A seller can also be liable for making a false statement about permits, building-code compliance, structural problems, or the condition of the property. In those circumstances, caveat emptor may not protect the seller. (Temple v. Thomas, 2007 ABQB 316 (CanLII), [45]-[47]; Lewis v Plourde, 2017 ABQB 235 (CanLII), [193], [208])

Caveat emptor still applies—but has exceptions

Caveat emptor is the general starting point in Alberta real estate transactions. Buyers are generally expected to inspect the property and protect themselves through conditions, warranties, and other contractual terms. (Slevinsky v Chambul Estate, 2014 ABQB 680 (CanLII), [63]; Dyte v Total Point Developments Inc, 2025 ABKB 530 (CanLII), [224]-[225])

The important exceptions include situations where the seller:

Fraudulently misrepresents or conceals a problem;
Knows about a latent defect that makes the property dangerous or unfit for habitation;
Is reckless about statements concerning the property’s condition; or
Fails to disclose a known latent defect that creates a danger to people or property. (Lewis v Plourde, [193]-[208])

When unpermitted work becomes a disclosure problem

The absence of a permit may be significant even if the work initially appears functional. In Temple v. Thomas, the court referred to the principle that the absence of required renovation permits could itself constitute a latent defect, and that consciously failing to disclose the missing permits could amount to fraudulent misrepresentation even without proof that the work was unsafe. (Temple v. Thomas, [45]-[47])

The issue becomes more serious where the work also involves:

Hidden electrical, plumbing, heating, structural, or foundation problems;
Missing inspections or approvals;
Work that does not comply with building codes;
Safety risks or loss of use of part of the home;
Problems obtaining municipal compliance, insurance, financing, or future resale; or
False statements in a property disclosure statement or purchase contract.

In Lewis v Plourde, the sellers had completed extensive renovations without the required permits or inspections. The court found that their failure to investigate and disclose the permit issue made them reckless regarding hidden electrical, heating, and foundation defects. The defects were ultimately found to make the home potentially dangerous or unfit for habitation. (Lewis v Plourde, [230]-[245])

Patent versus latent defects

The distinction between patent and latent defects matters.

A patent defect is discoverable through reasonable inspection and ordinary diligence. A latent defect is not reasonably discoverable by an ordinary purchaser before the transaction. (Slevinsky v Chambul Estate, [66]-[68]; Dyte v Total Point Developments Inc, [229]-[232])

Generally, a seller does not have to disclose an obvious defect. But active concealment can change the result. For example, covering a known foundation problem with drywall may make the issue effectively hidden and may amount to fraudulent misrepresentation. (Slevinsky v Chambul Estate, [72]-[88])

In Temple v. Thomas, the purchaser’s inspection did not reveal serious electrical, heating, plumbing, and ventilation problems. The court treated those issues as latent and found that the seller’s failure to disclose the circumstances of the unpermitted renovations amounted to misrepresentation. (Temple v. Thomas, [50]-[57])

What if the seller completes a disclosure statement?

A seller who voluntarily completes a property disclosure statement must provide honest and accurate answers. The statement may not be a warranty, but inaccurate answers can still create liability as representations. (Krawchuk v. Scherbak, 2011 ONCA 352 (CanLII), [68]-[80])

Questions about additions, alterations, structural problems, flooding, permits, or compliance should therefore be answered carefully and completely. In Alevizos v. Nirula, 2003 MBCA 148 (CanLII), the court found that a partial answer about past leakage was misleading because it implied that no other leakage had occurred. The court treated the incomplete answer as fraud by silence and active concealment. (Alevizos v. Nirula, [33]-[43])

Similarly, in McCluskie v. Reynolds, 1998 CanLII 5384 (BC SC), the sellers’ answers about permits and structural problems were considered alongside their knowledge of an unpermitted, structurally defective porch. The court found liability where the sellers denied relevant problems despite being aware of them. (Chase v. Spence, 2006 ABQB 444 (CanLII), [4]-[5], [16]-[19])

“As is, where is” does not solve everything

An “as is, where is” clause or entire-agreement clause may limit some claims about the property. However, it does not automatically protect a seller from fraudulent misrepresentation or active concealment. Fraud can defeat an exclusionary clause. (Slevinsky v Chambul Estate, [87]-[88]; 1234389 Alberta Ltd v 606935 Alberta Ltd, 2020 ABQB 28 (CanLII), [181]-[190])

The effect of the contract still depends on its wording. Express terms about permits, inspections, municipal compliance, hidden defects, or habitability may create additional contractual obligations.

Does the buyer have to discover the missing permit?

A buyer is expected to conduct a reasonable inspection and make appropriate inquiries. But a buyer’s ability to investigate does not necessarily defeat a claim based on fraud or deliberate concealment. (Dyte v Total Point Developments Inc, [231]-[236])

The analysis depends on what the buyer could reasonably have discovered. In Slevinsky v Chambul Estate, the foundation defects were latent because the foundation was hidden behind an interior wall and could not reasonably have been assessed without destructive testing. (Slevinsky v Chambul Estate, [72]-[84])

The lack of an occupancy permit was similarly treated as a latent defect in Dyte v Total Point Developments Inc because it was not evident from a reasonable inspection of the homes or their titles. (Dyte v Total Point Developments Inc, [256]-[258])

What can a buyer claim?

Depending on the facts and the contract, possible remedies may include:

The reasonable cost of repairing proven defects;
Diminution in value;
Certain loss-of-use or rental losses;
Damages for negligent or fraudulent misrepresentation; or
Rescission in sufficiently serious cases.

Courts do not automatically award the cost of rebuilding the entire property. The damages must compensate the buyer without placing them in a better position than they would have occupied if the property had been properly represented. (Lewis v Plourde, [249]-[257]; Dyte v Total Point Developments Inc, [494], [500]-[510])

Rescission may also be denied where the buyer delayed, restoration is no longer practical, or the parties cannot be returned to an equivalent pre-transaction position. (Slevinsky v Chambul Estate, [70]-[71], [90]-[103])

What this means practically

Unpermitted work is not automatically a lawsuit or a deal-breaker. The key questions are:

What work was completed?
Was a permit legally required?
Was the missing permit disclosed?
Did the seller know permits were missing?
Did the work create hidden defects or safety concerns?
Were inspections, approvals, or occupancy documents missing?
Did the seller make written or verbal statements about permits or compliance?
Did the contract include warranties about hidden defects or habitability?
Could the buyer reasonably have discovered the issue before closing?

The strongest claims generally involve hidden, material problems combined with seller knowledge, recklessness, misleading answers, or active concealment. In those circumstances, caveat emptor may not protect the seller.

Does a seller have to disclose unpermitted work in Alberta?