You can sell a house with unpermitted work in Florida, but the law requires you to disclose what you know about it, and hiding it can cost you the sale price back years after closing. Your realistic choices are to disclose the work and price the home accordingly, or to legalize it through a retroactive permit before you list.
What Counts as Unpermitted Work
Florida law makes it unlawful to construct, alter, modify, repair, or demolish any building without first obtaining a permit from the local enforcing agency.1Justia Law. Florida Code Title XXXIII Chapter 553 Part IV – Section 553.79 That sweeps in room additions, structural changes, electrical, plumbing, and roofing. Cosmetic work like painting or new flooring generally doesn’t need a permit. Anything that changes the structure, layout, or mechanical systems almost certainly does.
If the work was never permitted, the local building department has no record of it and no way to confirm it was done safely. That gap is what triggers the disclosure, financing, insurance, and code-enforcement problems that follow.
What You Have to Disclose
The Florida Supreme Court held in Johnson v. Davis that a seller who knows of facts materially affecting a property’s value, and that are not readily observable to the buyer, has a duty to disclose them.2Justia. Johnson v. Davis Unpermitted work fits that rule cleanly. A buyer walking through the home can’t tell whether the finished basement or the added bathroom was done legally, and the consequences down the line can be significant.
The standard Florida Realtors/Florida Bar “As Is” Residential Contract for Sale and Purchase contains a permits disclosure section where the seller states whether they know of any improvements made without required permits.3Florida Realtors. AS IS Residential Contract For Sale And Purchase Most deals also use a separate Seller’s Property Disclosure form with detailed questions about the home’s history and condition. Answer honestly on both.
Selling “as-is” is not a workaround. The as-is clause protects you from defects you genuinely didn’t know about. It gives you nothing if you knew and stayed quiet.
What Happens If You Hide It
A buyer who finds the unpermitted work after closing can sue for fraudulent nondisclosure. They don’t have to prove you set out to deceive them. They have to show you knew about a material defect that wasn’t readily observable and failed to disclose it.2Justia. Johnson v. Davis Damages typically cover the cost of getting retroactive permits, bringing the work up to code, and any losses tied to those fixes.
In worse cases, a buyer can ask for rescission, which unwinds the entire sale. If a court grants it, you take the house back and return the purchase price. Courts reach for rescission when money damages alone won’t make the buyer whole.
Time doesn’t bail you out quickly. A fraud claim in Florida has a four-year statute of limitations, but the clock starts when the buyer discovers the fraud or reasonably should have discovered it. The outer cutoff is 12 years from the date of the fraud, regardless of discovery.4The Florida Legislature. Florida Statutes Section 95.031 A buyer who first notices the problem during their own renovation five years in can still have a live claim.
“I didn’t know” rarely works when you were the one who hired the contractor or lived in the house while the addition went up. Courts look at what you reasonably should have known. If you commissioned the work and never saw a permit posted at the job site, that cuts against you.
Why the Buyer Will Find Out
Concealment tends to unravel because the people lending money and writing insurance policies are already looking.
Lenders treat the home as collateral. An appraiser can flag additions that don’t appear in public permit records, and the lender can deny the loan or require the issue to be fixed before closing. Homes with known unpermitted work tend to attract cash buyers and investors for exactly this reason.
Insurers use inspection reports and satellite imagery. An unpermitted addition may lead them to refuse coverage, raise premiums, or exclude the unpermitted portion of the home. Without insurance, a buyer can’t get a mortgage, which forces the same cash-buyer dynamic.
Property tax exposure also follows the work. An unpermitted addition that increases livable square footage can trigger a tax adjustment once the property appraiser catches it through aerial imagery, a neighbor complaint, or a later permit application.
Fines and Liens Already Attached to the Property
If the local building department has already discovered the unpermitted work, the situation is more urgent. After a notice of violation, the case usually goes before a code enforcement board or special magistrate, which can impose daily fines.
Under Florida law, fines for a first-time code violation can reach $250 per day, and $500 per day for a repeat violation. If the board determines the violation is irreparable, it can impose a one-time fine of up to $5,000. Larger municipalities with populations of 50,000 or more can adopt ordinances raising those caps to $1,000 per day for a first violation and $5,000 per day for a repeat violation.5Florida Senate. Florida Code Title XI Chapter 162 Part I – Section 162.09
A certified copy of the enforcement order can be recorded in the public records, where it becomes a lien against the property. Fines keep accruing until the owner comes into compliance. After three months of an unpaid lien, the local government can start foreclosure proceedings or sue for a money judgment.5Florida Senate. Florida Code Title XI Chapter 162 Part I – Section 162.09 Florida’s homestead exemption blocks foreclosure of a code enforcement lien on a primary residence, but the lien stays on the property and has to be paid off before you can deliver clean title.
Your Two Paths to Sell
Sell As-Is With Full Disclosure
Disclose the unpermitted work on the contract and the property disclosure form, price the home to reflect it, and let the buyer decide. This satisfies your legal obligations and avoids the time and cost of retroactive permitting. The trade-off is a lower sale price, because buyers will subtract their estimate of permits, inspections, and code upgrades from their offer.
This path tends to work when the unpermitted work is minor or when speed matters more than squeezing out the top dollar. It naturally pulls in cash buyers and investors who are comfortable handling permit issues on their own.
Get a Retroactive Permit Before Listing
The other path is to legalize the work first through what’s commonly called a retroactive or “as-built” permit, where the building department evaluates work that was finished without initial approval. The process generally involves:
- Hiring a licensed architect or engineer to prepare detailed as-built drawings of the structural, electrical, mechanical, and plumbing details as they currently exist.
- Providing evidence of when the construction happened, such as aerial photos, tax records, or surveys, since the department may apply the code that was in effect at the time rather than the current one.
- Getting an as-built certification from the architect or engineer that the structure is sound and meets the applicable code.
- Passing the building department’s own inspections. Current life-safety requirements such as smoke detectors, egress, and hurricane shutters usually have to be met regardless of when the work was done.
- Correcting any deficiencies the inspectors find before the permit closes out.
Costs vary widely. A simple enclosed patio might run a few thousand dollars to legalize. A full addition with plumbing and electrical problems can hit five figures once you add in the architect, permit fees, and remediation. The payoff is that closing out the retroactive permit removes the stigma and lets you list at full market value, so the math often favors this route on larger projects.
There’s no guarantee the department will approve the work as it stands. If the construction has serious structural or safety issues, you may have to tear out and rebuild portions to code. Have a licensed contractor assess the work before you commit to this path so you know what you’re walking into.