What Is Unpermitted Work? Risks, Disclosure, and What to Do About It

Unpermitted work is a problem that hides in plain sight. A finished basement, a converted garage, and an extra bathroom all look like great additions until someone pulls the permit history and finds nothing. At that point, a routine home sale can unravel quickly.

Whether you're a buyer, seller, real estate agent, or investor, understanding unpermitted work—what it is, what it means, and what your options are—is essential.

Key Takeaways

• Unpermitted work is construction done without required permits, and it follows the property, not the person who did it
• Home inspectors can flag suspected unpermitted work; municipal inspectors can require remediation
• Sellers can legally sell a home with unpermitted work, but disclosure is generally required and non-disclosure creates legal exposure
• Buyers should assess retroactive permit costs or remediation costs before closing, and use them as negotiating leverage
• Title insurance generally does not cover unpermitted work
• Permit history lookups (via platforms like Shovels) can surface undisclosed work before a transaction closes

What Is Unpermitted Work?

Unpermitted work is any construction, renovation, or improvement performed on a property without obtaining the required building permits from the local Authority Having Jurisdiction (AHJ). Building permits exist so that construction can be reviewed and inspected for code compliance in areas like structural integrity, electrical safety, plumbing standards, fire protection, and more.

Common examples of unpermitted work include:

• Room additions or garage conversions
• Finished basements or attic conversions
• Added bathrooms or kitchens
• Electrical panel upgrades or new circuits
• Plumbing relocations
• Decks, patios, and fences (in jurisdictions that require permits)
• HVAC system replacements

Unpermitted work isn't always the result of bad intent. Contractors cut corners. Homeowners attempt DIY projects without knowing permits are required. Previous owners inherit work that was already unpermitted. But regardless of how it happened, it's important to know that the liability follows the property, not the person who did the work.

What Happens If an Inspector Finds Unpermitted Work?

This is the question that tends to come up mid-transaction, and the answer depends on who the inspector is and what their authority is.

A home inspector, hired during a buyer's due diligence period, cannot issue citations or fines. They can flag suspected unpermitted work in their report based on signs like non-standard construction, work that doesn't match permit records, or features that seem inconsistently built. Their report creates a paper trail, and that paper trail creates negotiating leverage.

A municipal building inspector, on the other hand, has real authority. If unpermitted work comes to the attention of the local building department (through a complaint, a permit application for additional work, or a sale that triggers a city review), they can require the work to be inspected retroactively. Depending on what they find, outcomes can include a straightforward retroactive permit, a requirement to open up walls for inspection, a requirement to bring work up to current code, or an order to demolish non-compliant structures entirely.

The practical upshot: unpermitted work discovered during a real estate transaction typically becomes a negotiating issue between buyer and seller, not an immediate municipal enforcement action. But unpermitted work that gets reported to the building department is a different, more serious situation.

Can You Sell a House With Unpermitted Work?

Yes. Selling a house with unpermitted work is legal in most states, but it comes with disclosure obligations and real risk.

Most states require sellers to disclose known material defects, and unpermitted work generally qualifies. Failing to disclose it can expose a seller to legal liability after closing if the buyer discovers it later. Beyond disclosure, unpermitted work can affect:

• Appraised value — Unpermitted square footage typically cannot be counted in a home's appraisal, which affects how much a lender will finance
• Insurance coverage — Unpermitted additions may not be covered under homeowner's insurance
• Marketability — Some buyers (and their lenders) will walk away rather than take on the liability

Sellers have a few options when unpermitted work is discovered before listing: obtain a retroactive permit (if the work meets current code), disclose and price accordingly, or have the work removed. The right path depends on the scope of the work, local permitting requirements, and market conditions.

Buying a House With Unpermitted Work

For buyers, discovering unpermitted work during due diligence is a negotiating moment, not necessarily a dealbreaker. Even so, it requires clear thinking about what you're taking on.

Questions to work through before closing:

• Can the work be permitted retroactively? Get a contractor or permit expediter to assess whether the work meets current code and what retroactive permitting would cost.
• What would remediation cost if it can't be permitted? The worst-case scenario is tearing out and redoing non-compliant work. If this is a possibility, get an estimate before you close.
• Will your lender allow it? Some loan programs (FHA, VA) have stricter requirements that may not allow certain types of unpermitted work without remediation.
• Does your homeowner's insurance cover it? Check with your insurance to make sure.

Use the estimated remediation cost as the basis for a price renegotiation or seller credit. If the seller won't budge and the liability feels too large, it's a legitimate reason to walk.

What If the Seller Didn't Disclose Unpermitted Work?

If you've already closed and discover that the seller knew about unpermitted work and failed to disclose it, you may have legal recourse. Seller non-disclosure of material defects is the basis for many real estate lawsuits.

Whether you can successfully sue depends on several factors: whether the seller actually knew (versus genuinely not knowing), what your state's disclosure laws require, how significant the defect is, and whether you can prove damages. A real estate attorney is the right starting point. This is not a situation to navigate alone.

That said, litigation is slow, expensive, and uncertain. Many buyers in this situation end up negotiating a settlement rather than going to trial. The key is to document everything: when you discovered the issue, what it would cost to remediate, and any evidence that the seller was aware.

Does Title Insurance Cover Unpermitted Work?

Generally, no. Standard title insurance policies cover defects in title, including ownership disputes, liens, recording errors, and others. They do not cover physical conditions of the property. Unpermitted work is a property condition issue, not a title issue.

Some enhanced title insurance policies include limited coverage for certain building permit violations, but this is narrow and varies by policy. Don't assume title insurance is a backstop for unpermitted work issues without reading your policy carefully.

The better protection is thorough due diligence before closing: a permit history search, a qualified home inspector, and a real estate attorney reviewing the disclosure documents.

How to Check for Unpermitted Work

Unpermitted work isn't always obvious, and that's part of what makes it risky. Here's a practical sequence for surfacing it before it becomes your problem.

Start with a visual walkthrough. Look for signs that something was added or altered: mismatched flooring, ceiling heights that change between rooms, electrical panels with unfamiliar wiring, plumbing fixtures in unexpected locations, or additions that don't quite match the original structure. These aren't proof of unpermitted work, but they're flags worth investigating.

Pull the permit history. This is the most reliable step. Compare what's physically on the property against what's on record with the local jurisdiction. If a home has a large addition, a converted garage, or a finished basement and the permit history shows nothing, that's a flag worth following up on.

Shovels makes this step fast. Just enter a property address to pull the full permit record: what work was permitted, when, what trade it covered, and how it resolved. For real estate investors evaluating acquisition targets, agents doing pre-listing due diligence, or buyers verifying a property before committing, permit history is one of the most useful data points available.

Finally, always hire a qualified home inspector. A good inspector will flag construction that looks inconsistent with permitted work, including non-standard framing, wiring that doesn't match modern code, and finishes that appear to have been added after the original build. They can't pull permit records themselves, but their report gives you a list of areas to cross-check.

Need to check up on a home or property? You can access permit history today. Just sign up with Shovels Online, or connect to the Shovels API if you're building permit lookups into a broader workflow.