Unpermitted work on a house in NC: what sellers must say, and how to permit it after the fact

On July 1, 2026, a revised Residential Property and Owners' Association Disclosure Statement took effect in North Carolina; the Real Estate Commission adopted it on December 17, 2025. One question stayed word for word. Question E3 asks every seller of a one- to four-unit home whether the property is "in violation of any building codes (including the failure to obtain required permits for room additions or other changes/improvements)". The permit records show how often the answer is yes. In Wake County, whose records say so plainly, about 40 permits a quarter are filed for work that was already built: a shed, a deck, a finished attic, an addition. This guide covers what the law and the form say, what those permits show, and how unpermitted work gets permitted after the fact.

Quick answers

What NC law and the disclosure form say

G.S. 160D-1110 says no one may start or carry on construction, alteration, repair or demolition, or plumbing, heating and cooling or electrical work, without first getting the permits the State Building Code requires. It also exempts a lot of small jobs: work costing $40,000 or less in a single-family home needs no building permit unless it touches load-bearing structure, adds or changes plumbing, heating, cooling or wiring, adds roofing, or uses materials the code doesn't allow. Replacing windows, doors, siding, or the decking, railings and stair treads of an existing deck needs none. A missing permit is only a problem where a permit was required.

The disclosure statement comes from the Residential Property Disclosure Act, G.S. Chapter 47E. A seller of a home with one to four units has to give it to the buyer no later than the offer. If they don't, the buyer can cancel within three calendar days of getting it or of the contract, or before closing if that comes first. A first sale of a new home that's never been lived in is exempt, and so are foreclosures and transfers within a family. Besides E3, question A3 asks whether there have been "any structural additions or other structural or mechanical changes" to the house. A Yes to a question about a problem needs a written explanation or an expert's report.

What the permits show: about 40 a quarter in Wake County, steady

Wake County's inspectors write it into the record. When a permit is for something already built, its description usually says so, in a standard phrase such as "BUILT W/OUT PERMITS/INSPECTIONS" or "legalize existing", and sometimes with the case number of a violation. Counting those, Wake County took 446 permits for work already done in the three years to September 2026, not counting withdrawn applications. The number has held at about 35 to 50 a quarter since 2024: this is a steady flow, not a spike.

Set against everything filed, it's a large share of some kinds of work. Of the permits Wake County took for sheds and other outbuildings from October 2023 to September 2025, one in ten was for one already standing. For decks it was one in 12. And these permits take longer: a median of 44 days from filing to issue for an outbuilding already built, against 30 for a new one, and nearly twice as many expire before they're finished.

Sorted by what the work actually was, all 446 over the three years, the list is mostly the things people build on a weekend or buy as a kit. The declared values are what the applicant put on the permit, so read them as a rough guide to job size.

Most of them get through. Of the 446, 321 have been issued or completed, 74 were still in review at the end of September, and 33 had expired. Other offices take the same kind of permit, but their records rarely say so: Mecklenburg, Durham, Greensboro, Raleigh and New Hanover County each have between about 15 and 80 over the same three years whose descriptions mention it.

How unpermitted work comes to light

The descriptions show three ways, and the most common isn't a home sale. It's the next permit. An owner applies to replace a shed or add a screen porch, and the office finds nothing on file for what's already there. One Wake County application from November 2025 reads: "When Applying for permit [number], no records were found for the existing covered deck. This application is intended to correct the unpermitted construction done by a previous home owner." Another, from July 2026, adds a gazebo and a hot tub that were "unknown to us when we purchased the home" to get a new shed approved.

• A new owner finds it. At least 30 of the 446 descriptions mention a previous owner, a purchase or a sale: a shed "installed by previous homeowner, without a permit", a third floor finished by a previous owner that the tax record didn't count, an attic bedroom a new owner wants counted as a bedroom. Many more don't say who built it, so 30 is a floor.
• The office finds it. More than a quarter, 125, cite a violation case or a complaint, and 91 of those are remodels and additions: work someone noticed going on.
• The owner comes forward. The rest read as owners putting something right on their own, often before they sell or build again. In 62 the owner is doing the work, and the permit notes that the owner must be at every inspection.

What it means for buyers, sellers and contractors

• Buyers: search the permits at the address before your due diligence period ends, and match them against the house. A finished attic, a bonus room over the garage, a big deck or a detached workshop with no permit behind it is a question for the seller, and a No Representation on E3 is a reason to ask it, not an answer.
• Sellers: an after-the-fact permit in Wake County took a median of 39 days to issue, longer for sheds, decks and additions, before any repairs an inspector asks for. If you're going to legalize something, start before you list, not after the inspection report.
• Deck, porch and remodeling contractors: legalizing existing work is a job of its own. The permits show contractors and engineers filing for owners ("helping homeowner get permit on unpermitted addition. Have included Engineer letter"), rebuilding an unpermitted deck to code, or tearing one down.
• Home inspectors and engineers: 34 of these permits mention an engineer's letter or as-built drawings, split about evenly between additions, remodels and outbuildings.

How to check a house in TarSignal

TarSignal's Permit Search shows every permit at an address across the 23 offices we read, free. To see this kind of permit, search Wake County's work descriptions for "built w/out" or "legalize". For a single property before you buy, the address report lists its permit history in one document. Our guide to looking up building permits by address explains which office holds the record for a property and what each status means.

How these numbers were counted

• Wake County is the only office counted, because it's the one whose descriptions say consistently when a permit is for work already built, and its records cover the whole period. Its records start part way through the fourth quarter of 2023 in our data, so the chart starts in 2024. Permits are counted by the date they were filed.
• A permit is counted as for work already built when its type or description says "legalize", "after the fact", "retro" or "retroactive" (not "retrofit"), "unpermitted", built, done, installed or finished "without permits" or "w/out permits", or cites a Wake County violation case (VIO-). Descriptions saying no permit was needed, and withdrawn, voided and cancelled applications, are left out. In a random sample of 30, 29 were for work already built and one was for tearing an unpermitted deck down.
• The comparison table covers permits filed from October 2023 to September 2025, so that most have had a year to finish. It compares four Wake County residential permit types with the rest of the same type. Days to issue are the median from the filing date to the issue date, for permits issued so far. "Expired" is the permit's status in October 2026.
• Kinds of work are sorted from each permit's type and description, in the order listed: outbuildings, decks, porches, finished attics and basements, additions, remodels, then the rest. Values are as declared on the permits. Mentions of a previous owner, a purchase or a sale, and of a violation or complaint, are counted from the descriptions, so they're lower bounds.
• The disclosure form questions are quoted from the Real Estate Commission's REC 4.22 as revised for July 1, 2026; E3's wording is the same on the version it replaced. Statutes are as published by the General Assembly in October 2026, and Wake County's fees and its 12-foot shed exemption are from its fee schedule and permit FAQ as published then. The fee schedule lists no separate penalty for starting work without a permit. This article is general information, not legal advice; a real estate attorney can say how it applies to a particular sale.