What usually turns out to be unpermitted
The list barely changes from house to house. Finished basements, rear decks, dormers, a garage turned into a bedroom, a sunroom off the kitchen, a second kitchen put in for a relative who moved in years ago.
Most of it was built competently by people who knew what they were doing. It simply never went through the building department, and the work stays unpermitted no matter how well it was built or how long ago it happened.
How we help Smithtown owners with unpermitted work
Buying the house is the part everyone understands. It is rarely the whole of what somebody in this position needs.
We have been buying houses on Long Island for 15+ years and we have legalized plenty of unpermitted work in that time, so we know the expeditors, the architects who draw the as-built sets, and the attorneys worth calling when a file is genuinely stuck. We make those introductions whether or not the Smithtown house ends up being ours. Describe what was built and roughly when, and we will tell you what permits are likely involved.
What this looks like in Smithtown specifically
Smithtown is roughly 25,629 people in Suffolk County, ZIP 11787, and the housing stock is mostly colonial, split-level, ranch. Around Main Street and the Smithtown Bull, most of it is old enough that the mechanicals are on their second or third life. The Smithtown stop pulls buyers who commute, which supports the good houses and does very little for the ones that need a roof. We have been buying across Suffolk County for 15+ years. We know what the Smithtown Central School District does to a resale price, which blocks still have oil tanks in the ground, and what a house like yours is actually worth here.
The Smithtown median has barely moved year over year as of 2026-05, at 1.27%. Flat is the hardest market to price a fixer into, because there is no upward drift to cover a mistake and no urgency pushing buyers to overlook a problem. A $797,500 median puts Smithtown in the band where buyers are stretching to afford the house and have nothing left for the roof. That is precisely the buyer who walks away from a property needing work, and it is why condition matters more here than the price alone suggests. The median house here goes under contract in about 23 days, which is quick for Long Island. It is also a figure that only applies to property in showable condition.
Why the buyer's lender cares about unpermitted work
The awkward part is how late it surfaces. Everything feels fine until a search comes back and the deck, the basement or the extra bathroom is not on file anywhere and no permit was ever pulled.
By then there is a signed contract, a mortgage commitment with conditions attached, and a buyer who has started packing. Renegotiation follows, then often a collapse, and a Smithtown house goes back on the market with more days on it and a story attached.
Legalizing unpermitted work after the fact
Ask an attorney or an expeditor before you assume anything, in either direction. We have seen owners spend months chasing approvals they were never going to get, and we have seen others avoid selling for years over something that would have been permitted in a season.
The only way to know which one you have is to put the file in front of somebody who works with that department regularly. We are glad to tell you who we would call in Smithtown, and there is nothing owed to us for it.
What the two paths cost in Smithtown
These are the two routes open to you with a house with unpermitted work, priced against what Smithtown houses actually sell for.
Work it against Smithtown's own numbers. The median sale here is $797,500. A 5% commission on that is $39,875, and seller closing costs of about 2% add roughly $15,950. Those are costs we can cover on our side. That is $55,825 gone before anyone counts the repairs it took to get the house listable.
There are two waits in a listed sale and people usually only count the first. In Smithtown the median house takes about 23 days to go from listed to a signed contract. Then it waits again, typically 45 to 60 days, while the buyer's lender orders an appraisal and underwrites the loan. Call it 68 to 83 days from sign to keys, assuming nothing goes wrong.
The part worth understanding is what a signed contract actually guarantees, which is less than most sellers assume. A retail buyer with a mortgage contingency can walk away right up to the end. If they do not qualify, if the appraisal comes in under the price, if they change their mind and let the financing lapse. A share of deals die exactly there, after months of waiting, and the house goes back on the market with time on it. We are not borrowing anything, so there is no lender to satisfy, no appraisal to come in low and no contingency to exercise.
| Listing with an agent | Selling to us | |
|---|---|---|
| Sale price | $797,500 (Smithtown median) | Our written offer |
| Commission | −$39,875 | None |
| Seller closing costs | −$15,950 | We can cover them |
| Repairs before listing | Out of pocket | None |
| Cleanout | Yours | Ours |
| Showings | Until it sells | One visit |
| Listed to signed contract | 23 days (Smithtown median, once listable) | 24 hours to a written offer |
| Contract to closing | 45 to 60 days (waiting on the buyer's lender) | A date you choose |
| Total wait | 68 to 83 days if nothing falls through | Yours to set |
| Can the buyer walk? | Yes (mortgage contingency runs to the end) | No financing to fall through |
| Before repairs and carrying | $741,675 | The number we put in writing |
For the listing side we have used a 5% commission and about 2% in seller closing costs; your real figures may differ. Repairs and carrying costs are left out because they depend on the house. If yours is in good shape, a good agent may well get you more than we would, and we will tell you if so.
Legalizing the unpermitted work first, or selling as-is
The comparison worth making is not our offer against an asking price. It is money in hand on a date you choose, set against a listed number minus commission, minus whatever the permit process costs, minus the concessions a buyer asks for once the file comes back, and minus several months of carrying a Smithtown house.
We will lay ours out in writing so it can be compared honestly. If the listing wins on that arithmetic, take the listing.
How we arrive at a number on a house with unpermitted work
For a house with unpermitted work, the starting point is the price once it is fully repaired. We subtract what the repairs cost and then a margin for being wrong about the price or the repairs. No algorithm and no trade secret: that is how the number is built.
- What it is worth repaired. Not the Smithtown median of $797,500 on its own, but what houses like yours on your street actually closed at recently.
- What the work costs. Roof, boiler, electric, the kitchen and bath. In Smithtown the stock is largely colonial and split-level, and on houses that age the mechanicals are usually the expensive part rather than the cosmetics.
- How long we will hold it. The median Smithtown house goes under contract in about 23 days once it is showable, then waits 45 to 60 days more on the buyer's lender. Ours has to get to showable first, and we carry taxes and insurance across the whole of it.
- What we are wrong about. Every renovation turns up something nobody could see on the walk-through. We build that risk into the price, and it explains a good part of why cash offers come in below retail.
Where our margin actually comes from
Plainly, because buyers are often vague here: we run millions of dollars of construction a year. At that volume we pay contractor prices for materials and keep steady crews working twelve months a year, so a given renovation costs us roughly half of what a homeowner pays for the same job.
That is where our margin is. It is also why fixing the house up yourself first rarely pays off. You would be paying retail for the work and counting on the sale price to cover it, and it usually does not. We earn our money on the construction side, not on the price we pay you.
If the figure does not work, say so; we would rather know than try to talk you round. We will look at what is going on and tell you honestly which options make sense, including the ones without us. Listing with an agent is the better route for plenty of sellers, and we will tell you if it is yours.
What to do next
Nothing has to be legalized, opened up, drawn or approved before we buy. The unpermitted work stays exactly as it is through the closing, and the file becomes ours.
That is not a concession, it is simply the work we do. We take on the file, commission the drawings, meet the inspectors on site and pay for the corrective work when one of them asks for it. What would be a year of your life, spent on a house you have already decided to leave, is a line in our budget.
Common questions
Will unpermitted work stop a buyer getting a mortgage on a Smithtown house?
Frequently, yes, and it is the reason unpermitted work matters far more at sale than it ever did while you lived there. The loan is secured against the house as the town's records describe it, and an unpermitted addition is not in those records. Some Smithtown buyers get past it with a cooperative lender and a long timeline. Many do not. Selling for cash removes the question entirely.
Do I have to pull permits before selling my Smithtown house?
Not to sell to us. We buy with the work unpermitted and take the file on afterward. Whether you need them for any other purpose is worth putting to an attorney.
The previous owner did the unpermitted work. Does that change anything?
It is extremely common and it does not affect our offer. What you are personally exposed to is an attorney question, but unpermitted work done by a previous owner is not a reason we walk away.
Will the town find the unpermitted work when I sell my Smithtown house?
A buyer's attorney will usually order a municipal search, which is where open permits and missing sign-offs surface. Selling to us does not require that search to come back clean.
There is already a violation for the unpermitted work. Can you still buy?
Yes, and it is a common starting point for these conversations. Tell us what the notice says and we will price it once rather than being vague now and revising on you later.
How much does unpermitted work take off the price of a Smithtown house?
It depends what it would take to legalize it and what the risk is that the town says no. A finished basement is usually a smaller adjustment than an addition sitting in a setback. We would rather price it accurately once than revise later.