By Eric Berman, REALTOR® | The Eric Berman Team at Compass
TL;DR:
The costs that damage a Long Island seller's net figure are rarely the ones on the closing statement. Commission, transfer tax, and attorney fees are known quantities that belong in a model from the first day. What actually catches people is a permit issue surfacing in municipal searches after contracts are signed, an appraisal that comes in under an aggressive offer, or a home that takes four months instead of six weeks while the seller carries it. Carrying costs alone run $7,000 to $9,000 a month on a typical mid-range Long Island home once taxes and utilities are counted, which means every extra month on market costs more than most sellers spend preparing the house.
The Costs Sellers Model, and the Costs That Actually Hurt
Most sellers arrive at this question expecting a list of closing-statement line items. Those are worth knowing and they are entirely knowable in advance — commission, New York State Transfer Tax, attorney fees, and the rest belong in a net-proceeds model built before a price is ever set, and the full breakdown of what selling costs covers each one.
That is not what this post is about. The expenses that genuinely damage a seller's outcome are the ones that arrive uninvited, usually weeks into a transaction, usually with a buyer watching and a clock running. They are harder to anticipate, larger than expected, and they land at the moment a seller has the least leverage to absorb them.
Some are avoidable with a phone call. Some are structural risks that can only be priced in. Knowing which is which is most of the value here.
The Municipal Search Problem
This is the most expensive surprise available on Long Island and the one sellers are least likely to see coming.
After contracts are signed, the buyer's attorney orders municipal searches covering permits, violations, and certificates of occupancy. Whatever the governing town or village has on file comes back in writing. A permit pulled in 2009 and never closed out. A finished basement with no permit and no amended certificate of occupancy. A deck, a dormer, a converted garage.
Resolving any of these means an application, an inspection, whatever corrective work the inspection requires, and a sign-off — on the municipality's schedule, not the seller's. Costs vary enormously with the work involved. A deck sign-off might run a few hundred dollars in fees. Legalizing a basement finish that skipped egress requirements can run $8,000 to $20,000 and take two to three months.
The timing is what makes it brutal. Discovered six weeks before listing, it is an errand. Discovered after contracts are signed, with a mortgage commitment clock running, it becomes a delayed closing, a renegotiation, or a dead deal. Sellers who want the full treatment will find what to do about violations and unpermitted work covers how each type resolves.
The preventive step costs nothing: call the building department that governs the property and ask what is on file, before listing.
Carrying Costs, With Actual Numbers
Every article on this subject mentions carrying costs and almost none of them do the arithmetic, which is the only thing that makes the point land.
A typical Long Island home in the $1.2 million range with a mortgage carries somewhere in the neighborhood of $7,000 to $9,000 a month all in — principal and interest, property taxes running $18,000 to $30,000 annually depending on the district, homeowner's insurance, utilities, and maintenance. Entry-level properties run lower, North Shore properties considerably higher.
Three extra months on market is therefore $21,000 to $27,000. That figure deserves to sit next to every pricing conversation, because it reframes the trade-off entirely. A seller holding out for $40,000 more, who takes an additional four months to get it, has spent most of the difference carrying the house — and that ignores what a long days-on-market count does to negotiating position by the time an offer finally arrives.
The version that hurts most is double carrying. Sellers who buy before selling carry both properties, which on Long Island frequently means $12,000 to $16,000 combined per month. That math is manageable across six weeks and punishing across five months. It is also the single strongest argument for pricing a home to sell rather than to test.
Appraisal Gaps and Post-Inspection Concessions
Two costs that only exist once a deal is underway, and both can run five figures.
An aggressive offer creates appraisal risk. When a buyer bids well above the comp set and the appraisal comes in below the contract price, the lender will only lend against the appraised value. Unless the buyer agreed to appraisal gap coverage — bringing additional cash to bridge the difference — the seller is choosing between reducing the price and putting the home back on the market with a stale days-on-market count. A $30,000 gap is common enough on an over-aggressive offer, and the seller usually absorbs most of it. This is why the highest offer is frequently not the best one, a point covered in how to actually compare competing offers.
Post-inspection concessions are the other. The inspection surfaces items, the buyer requests credits or repairs, and a negotiation happens with contracts already signed. Typical Long Island concessions land somewhere between $3,000 and $15,000 depending on what the inspector finds, with older housing stock and deferred maintenance pushing higher. A seller who commissioned a pre-listing inspection and addressed the significant items has far less exposure here, which is much of the argument for doing one.
The Moving-Out Costs Nobody Budgets
Preparation costs are at least anticipated, if underestimated. Interior painting runs $3,000 to $7,000 for a typical Long Island colonial. Floor refinishing runs $3 to $5 per square foot. Professional photography, which is not optional, runs a few hundred. Cleaning before photographs and showings runs $400 to $800. Staging varies enormously — consultation and light styling might run $1,500 to $3,000, while fully furnishing a vacant home can run $2,000 to $5,000 a month.
On repairs specifically, the honest framing is that most are optional. The useful test is narrow: will a buyer notice it in the first ninety seconds, and will an inspector flag it. Items failing both tests can usually be left alone. Sellers deciding where to spend will find the improvements that actually return their cost is a shorter list than expected.
The genuinely forgotten expenses come at the end. Professional movers for a Long Island house run $2,000 to $6,000 locally and considerably more interstate. Storage runs $150 to $400 a month. And temporary housing, when the sale and the purchase do not align, is the one that surprises people most — a short-term rental or extended stay between closings can run several thousand dollars for a few weeks, and it is almost never in anyone's original plan.
Two More Worth Knowing About
Title problems. The title search occasionally surfaces something old — an undischarged mortgage satisfied twenty years ago but never formally released, a mechanic's lien from a contractor dispute, a boundary discrepancy, an unresolved estate matter in the chain of title. Resolution is usually possible and usually costs attorney time rather than large sums, but it takes weeks. An early title review before listing is inexpensive insurance.
Oil tanks. Many older Long Island homes converted from oil to gas, and abandoned underground tanks were sometimes left in place rather than removed or properly closed. Tank removal typically runs $2,000 to $5,000. Remediation, where a tank leaked and contaminated soil, runs well into five figures and can affect insurability as well as financeability. Sellers who suspect a tank was never formally removed should raise it with the attorney before it becomes a buyer's discovery.
On taxes, briefly: a home that has appreciated past the primary-residence exclusion generates a real tax bill, and New York taxes the gain as ordinary income on top of the federal treatment. That is a substantial topic in its own right and it is covered properly in what selling actually costs in taxes. The relevant point here is simply that it belongs in the model rather than arriving as news in April.
A Worked Example
Consider a composite case — a Nassau County seller with a colonial listed at $1,240,000, who had modeled roughly $85,000 in commission, transfer tax, and attorney fees and assumed that was the picture.
What actually happened: $16,400 in pre-listing work, painting and floors. The home took eleven weeks rather than the six he expected, adding roughly $21,000 in carrying costs beyond his assumption. Municipal searches turned up a 2011 deck permit never closed out, resolved for about $1,900 in fees and minor correction, though it pushed the closing three weeks. Post-inspection concessions came to $7,200. Movers and four weeks of storage ran $5,300.
Against his $85,000 model, the actual total was closer to $137,000. Nothing about it was unusual, and nearly all of it was foreseeable. The permit was a phone call he never made. The carrying-cost exposure was a pricing conversation he had optimistically.
Where to Start
Call the building department that governs the property and ask what is on file. This is free, it takes fifteen minutes, and it addresses the most expensive item on this list.
Then build the model honestly. Start with the known closing costs, add a realistic preparation budget, and add carrying costs for a listing period longer than hoped — three months rather than six weeks is the responsible planning assumption. Add a concession reserve in the $5,000 to $10,000 range. Consider a pre-listing inspection and an early title review. And be honest about whether the intended list price creates appraisal risk.
Sellers wanting a current read on where the home actually sits before running any of this can start with a quiet look at present value.
The Honest Bottom Line
The costs that hurt are not hidden in the sense of being concealed. They are hidden in the sense that nobody looks for them until they arrive, and by then the seller has the least room to respond.
Two things do most of the work. A phone call to the building department, made months before listing, addresses the largest single exposure on the list. And an honest carrying-cost number, sitting next to the pricing conversation, changes how a seller thinks about holding out for a higher figure — because the extra months usually cost more than the extra dollars are worth.
Sellers who want to build a realistic picture for their own situation, with no pressure attached, are welcome to start that conversation whenever it suits them.
This is general information, not legal, tax, or financial advice. Cost figures are approximate Long Island ranges and vary by property, jurisdiction, and market conditions. Confirm specifics with a licensed New York real estate attorney and a CPA.
FAQs
What is the most expensive surprise when selling a Long Island home?
Usually a permit or certificate of occupancy issue surfacing in the municipal searches the buyer's attorney orders after contracts are signed. An unclosed permit from years ago, a finished basement never permitted, a deck or dormer with no sign-off — any of these can require an application, inspection, corrective work, and a sign-off on the municipality's timeline rather than the seller's. Legalizing a basement finish that skipped egress requirements can run $8,000 to $20,000 and take two to three months. Discovered before listing, it is an errand. Discovered mid-transaction, it delays or kills the deal.
How much does it cost to carry a Long Island home while it is on the market?
A typical $1.2 million Long Island home with a mortgage runs roughly $7,000 to $9,000 monthly all in — principal and interest, property taxes at $18,000 to $30,000 annually depending on district, insurance, utilities, and maintenance. Three extra months on market is therefore $21,000 to $27,000. Sellers who buy before selling carry both properties, frequently $12,000 to $16,000 combined monthly. This arithmetic belongs next to every pricing conversation, because holding out for a higher number often costs more in carrying than the higher number delivers.
How much should a seller budget for post-inspection concessions?
Typical Long Island concessions run somewhere between $3,000 and $15,000, with older housing stock and visible deferred maintenance pushing toward the upper end. The negotiation happens after contracts are signed, when the seller has committed to a timeline and has less leverage than at the offer stage. A pre-listing inspection substantially reduces this exposure by identifying significant items while there is still time to address them quietly or price them in, rather than conceding them under pressure with a closing date approaching.
What happens if the appraisal comes in below the contract price?
The lender will only lend against the appraised value, so the difference has to come from somewhere. If the buyer agreed to appraisal gap coverage, they bring additional cash to close. Without it, the seller generally faces a choice between reducing the price and returning to market with an accumulated days-on-market count that weakens their position. Gaps of $30,000 are common on offers well above the comp set, and sellers usually absorb most of it — which is a substantial reason the highest offer is frequently not the strongest one.
Are pre-sale repairs actually necessary on Long Island?
Most are optional, and the framing that buyers expect repairs overstates it. The useful test is narrow: will a buyer notice it in the first ninety seconds of a showing, and will an inspector flag it. Items that fail both tests can usually be left alone. Items that fail either — visible water damage, a non-functioning system, obviously worn flooring — are worth addressing, because they either suppress offers or reappear as concession requests later. Interior painting and floor refinishing carry the most reliable return; major renovations do not.
By Eric Berman, REALTOR® | The Eric Berman Team at Compass
Eric Berman | Long Island & Queens Associate Broker | Compass
1468 Northern Blvd, Manhasset, NY 11030
(917) 225-8596 | eric@ericbermanre.com | theericbermanteam.com
