One unit can hold up an entire sale
The pattern is familiar. The good units pay, the building is sound, and one occupant is the reason three deals have fallen through. By the third failed contract the multi-family house has days on market attached to it and a story that follows it around.
We are not going to lose interest over one unit. Tell us which one it is and what is happening in there, and we factor it in rather than walk.
Converted and undocumented Farmingdale multi-family houses
Undocumented conversions are common enough on Long Island to be ordinary, and they become a problem at exactly two moments: when the municipality takes an interest, and when you try to sell. A buyer with a mortgage generally cannot close on a multi-family property that is not what the records say it is.
We can. We buy the house as it exists, deal with the legalization or the reversal ourselves afterward, and never ask a seller to resolve a conversion issue before closing.
Why local knowledge changes the number
The median is up 5.5% year over year as of 2026-10. A firming market gives you a little room for error on price, which is worth more than it sounds when the house is not in showable condition. A $759,611 median puts Farmingdale 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 25 days, which is quick for Long Island. It is also a figure that only applies to property in showable condition.
Farmingdale is roughly 8,466 people in Nassau County, ZIP 11735, and the housing stock is mostly cape cod, colonial, ranch. Around Main Street and Conklin Street, most of it is old enough that the mechanicals are on their second or third life. The Farmingdale 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 Nassau County for 15+ years. We know what the Farmingdale Union Free 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.
Some units paying, some not
Send the rent roll as it truly is rather than as it was meant to be. Which units are occupied, what each one pays, who is behind and by how much, what is signed and what never was.
A multi-family house with two paying units and one in arrears is completely normal to us. We price the paying units on what they actually collect and the rest on what it realistically is. Nobody is being asked to make the numbers look better than they are before we make an offer.
Working through Nassau County multi-family sales
We have been buying multi-family property across Nassau and Suffolk for 15 years, and the things that frighten a retail buyer off are the things we handle routinely. A unit nobody has been inside for two years. A conversion that was never permitted. Two paying tenants and one who stopped.
We bring in the landlord-tenant attorneys and the expediters we have used for years when a situation needs them, and we do that whether or not we end up buying the building. Tell us where the multi-family stands and we will tell you what your real options are.
What the two paths cost in Farmingdale
These are the two routes open to you with a multi-family property, priced against what Farmingdale houses actually sell for.
Work it against Farmingdale's own numbers. The median sale here is $759,611. A 5% commission on that is $37,981, and seller closing costs of about 2% add roughly $15,192. Those are costs we can cover on our side. That is $53,173 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 Farmingdale the median house takes about 25 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 70 to 85 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 | $759,611 (Farmingdale median) | Our written offer |
| Commission | −$37,981 | None |
| Seller closing costs | −$15,192 | We can cover them |
| Repairs before listing | Out of pocket | None |
| Cleanout | Yours | Ours |
| Showings | Until it sells | One visit |
| Listed to signed contract | 25 days (Farmingdale 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 | 70 to 85 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 | $706,438 | 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.
Two of everything, and what that costs
The units you cannot get into are the ones owners worry about most, understandably. A tenant who has been there fifteen years may have done things to a unit that nobody has seen in a long time.
We price unseen units conservatively rather than refusing to make an offer, and we say clearly which parts of the multi-family we have assumed rather than inspected. You will know exactly what the number rests on.
What you do not pay when you sell a multi-family property
Each of the following comes with a retail listing of a multi-family property, and none of it comes with ours.
- Agent commission
- $37,981 at 5% of the Farmingdale median none
- Seller closing costs
- About $15,192 on a $759,611 sale. We can cover these. none
- Repairs to make it listable
- Everything a buyer would flag, paid for before you list none
- Cleanout and removal
- Dumpsters or haulers by the load, ahead of any viewing none
- Carrying costs while it waits
- Taxes, insurance and utilities across the 70 to 85 days it takes to find a buyer and then wait on their lender none
What a retail sale looks like for a multi-family house
The median house in Farmingdale sold for $759,611 and took about 25 days to go under contract, then another 45 to 60 days waiting on the buyer's mortgage. That is 70 to 85 days in total, for a house that was ready to show on day one. Those timelines assume a house that shows well from day one and a single buyer's lender with a single set of questions. A multi-family adds an appraiser who wants every unit, a lender who wants documented rents, and a title company that wants the records to match the building.
When all of that is clean, listing frequently nets more, and we will tell you so.
Common questions
Do you buy two-family and three-family houses in Farmingdale?
We do, and multi-family is some of our most common work on Long Island. Tell us how many units there are and what is going on in each one and we will take it from there.
The conversion was never permitted. Can you still buy it?
That is a condition we price, not a reason to walk away. It does matter to a buyer with a mortgage and to a title company, which is usually why these multi-family houses struggle on the open market and not with us.
One unit pays and one does not. Does that kill the deal?
No. A mixed multi-family is ordinary. Give us the real rent roll and we price the paying units on what they collect and the rest on what the situation actually is.
Can you make an offer if a tenant will not let you in?
Yes. We work from whatever access you can reasonably give us, price the unseen units conservatively, and tell you plainly which parts of the building we assumed rather than inspected.
What happens to the leases and the deposits?
They come with the house. If a deposit was spent or was never formally held, say so early and we will work it into the numbers rather than discover it late.