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New York home purchases in 2027: the NYC property records to check, and how to look them up
New York home purchases in 2027: how NYC assessment, landmark, permit and deed records help buyers assess taxes, renovations and closing costs, with the mansion tax tiers and where to search each record.
For readers researching new york homes sales 2027, three public files help explain a property's status: the assessment roll from the city Department of Finance, the designation file from the Landmarks Preservation Commission, and the permit chain from the Department of Buildings. Each one is a snapshot of a process caught mid-step.
Buyers who read those files as settled facts overpay or walk away wrongly. Buyers who read them as stages ask better questions of the attorney, the inspector and the listing agent.
What to take away
- The tentative assessment roll is not the final roll, and a 2027 closing can be priced against either one.
- A designation report describes a building, never its occupants, and it is the best free construction history you can read.
- An approved permit application with no sign-off is an open question, not a finished renovation.
- Reconcile records by the date they were made and the question they answered, not by assuming one is wrong.
- Every figure that matters in 2027 is published by the agency that sets it, and it changes before your closing date.
- On a $1.2 million New York City resale, city and state transfer taxes (usually paid by the seller) plus the buyer's mansion tax come to about 2.8 percent of the price.
The 2027 roll, transfer taxes and closing costs
Every jurisdiction that taxes property produces a roll. New York City does it annually through the Department of Finance: a tentative roll is published, owners get a window to contest what is recorded, corrections are made, and a final roll issues.
For fiscal 2027 the tentative roll is published in January 2026 and the final roll in May 2026. Those values set the tax bills that run from July 1, 2026 to June 30, 2027. A closing in 2027 is priced against a roll that predates the sale by up to a year.
Owners contest values through the New York City Tax Commission, and the filing deadline falls in March.
Two consequences matter at a 2027 closing. A listing may quote a figure from the tentative roll, which can still change. Assessment data also lags construction, so a building altered this year often appears a cycle or more later. That lag is why the record and the building disagree.
Median resale prices vary by borough and by quarter. As of 2026, borough medians typically ran from the mid $400,000s in the Bronx to about $1.1 million in Manhattan. No 2027 sales figures exist yet, so take current numbers from the Department of Finance annualized sales update and the quarterly market reports from Douglas Elliman and Corcoran, and compare them with the sale prices recorded in ACRIS.
Transfer taxes are public and fixed. The New York City Real Property Transfer Tax is 1 percent on residential sales of $500,000 or less and 1.425 percent above that. New York State adds 0.4 percent.
The New York State mansion tax, paid by the buyer, is 1 percent for residential sales of $1 million to under $2 million, 1.25 percent from $2 million, 1.5 percent from $3 million, 2.25 percent from $5 million, 2.5 percent from $10 million, 2.75 percent from $15 million, 3.25 percent from $20 million, and 3.9 percent at $25 million and up. The rate applies to the whole price, not only the part above the threshold. On a $1.2 million Manhattan resale, the city and state transfer taxes (1.425 and 0.4 percent, usually paid by the seller) plus the buyer's 1 percent mansion tax come to about 2.8 percent, or roughly $34,000.
Buyer-side costs are separate. Title insurance, a title search, an attorney, an engineer and lien searches typically run 1.5 to 3 percent of the price for a co-op or condo. For a house that needs a survey and a flood certificate, expect 2 to 4 percent.
Mortgage recording tax applies to condo and house loans at just under 2 percent of the loan amount in New York City. Co-op loans avoid it, since the loan is not recorded against real property.
The federal deduction for state and local taxes is capped at $40,000 in 2025 and rises about 1 percent a year through 2029. For 2027 it is roughly $40,800. Property tax bills above that cap are not deductible in full.
The city's own explanation of how property assessments work sets out the stages and the vocabulary. Every jurisdiction publishes an equivalent, and the same rhythm shapes how US homes by city prices get recorded, since deeds and assessments follow a fixed sequence.
Where to look each record up
Each record sits in a different city system, and each is searched by address or by a lot number.
- Assessment and tax data:the Department of Finance property pages and the city's Property Information Portal. Search by street address, or by borough, block and lot (BBL). The page shows the assessed value, the tax class and the bill.
- Deeds, mortgages and liens:ACRIS. Search by address, BBL or party name, and open the deed to read the recorded price and date.
- Permits and violations:the Department of Buildings, through DOB NOW and the Buildings Information System. Search by address or building identification number (BIN) and read the job history.
- Landmark status:the Landmarks Preservation Commission's Discover NYC Landmarks map and its designation reports page. Search by address to see whether the building is individually landmarked or sits in a district.
- Housing violations:HPD Online, searched by address.
Run all five searches on the same address on the same day and note the date. Anything that disagrees becomes a question for your attorney.
The designation sequence
Landmark and historic district designation is a public process, and each step produces a different document.
Landmark designation stages
- Request or surveyA file exists
- CalendaringFormal agenda item
- Public hearingTestimony and transcript
- Designation reportResearched building report
- Vote and designationLegal status attaches
| Stage | What exists at this stage | What it does not mean |
|---|---|---|
| Request or survey identification | A file, sometimes a survey form | Nothing has been proposed |
| Calendaring | A formal item on an agenda | The outcome is not decided |
| Public hearing | Testimony, submissions, a transcript | The record is not the decision |
| Designation report | A researched report on the building | The report is about the building, not its occupants |
| Vote and designation | A legal status attaches to the property | Ownership does not change |
The designation report is the most valuable document in this system. It is researched, sourced, and describes construction history, alteration and significance.
Reports exist for Brooklyn Heights, the city's first historic district, designated in 1965; Greenwich Village, designated in 1969; and SoHo Cast Iron, designated in 1973.
The published set for New York is available through the Landmarks Preservation Commission's designation reports. Reading two or three is the fastest free architectural education a buyer can get.
For a 2027 buyer the report also fixes what can be altered. Exterior work on a designated building needs a permit and often a Landmarks Preservation Commission approval, which can add weeks to a renovation timeline.
It is also a document about a building rather than about anyone in it. That distinction matters when covering notable homes: public architectural history does not establish who lives there.
The same records apply to a landmarked mansion or a celebrity-associated building. The Dakota, the landmarked co-op at Central Park West and 72nd Street, was designated a New York City landmark in 1969. Its designation report describes the architecture, while a buyer there would rely on the offering plan and board approval described below. The landmark file says nothing about who lives there.
The permit life
A permit is not one record. It is a chain, and the chain has these stages:
- application
- plan examination
- objections raised and resolved
- approval
- work
- inspections
- sign-off
The permit chain
- Application filed
- Plan examination
- Objections raised and resolved
- Approval granted
- Work performed
- Inspections conducted
- Sign-off recorded
In New York City the chain lives in DOB NOW: Build, the Department of Buildings filing system, with older records in the Buildings Information System. Companion records sit in HPD Online for housing violations and in the OATH/ECB system for violation hearings.
A file showing an approved application with no sign-off means the work may have stopped, may be continuing, or may have finished without the final record being made. Treat the description on the application as intended work, not as what stands.
Three more records decide a 2027 sale: a Certificate of Occupancy or a Letter of No Objection, a Local Law 11 facade report for buildings over six stories, and a Local Law 152 gas piping inspection every four years.
Local Law 97 carbon caps apply to buildings over 25,000 square feet, with the first compliance period running 2024 to 2029.
An open permit that never got a sign-off can stall a 2027 closing until it is resolved or a Letter of Completion is issued.
Reading a stage correctly
Three questions settle most confusion about a property document.
- Which body issued it, and what question was that body answering?
- What stage of that body's process does this document represent?
- What is the date on the document, as distinct from the date you found it?
Answer those and a contradictory set of records stops being contradictory. The assessment file and the permit file disagree because they were made a year apart for different purposes.
Deeds, mortgages and liens for New York City sit in ACRIS, the Automated City Register Information System, which a title company searches for the title report. Co-op sales run through the Attorney General's Real Estate Finance Bureau, which reviews the offering plan and the building's financials.
Co-op boards hold a right of first refusal, so a signed contract is not the end of the process. Condo boards usually waive theirs, a step that takes two to four weeks.
The broader logic of what property records are and are not is set out in how property records work. The way a narrow lot generates the buildings these records describe is in New York homes interiors.
The way all of this looks from the street, city by city, is in homes by city.
Common questions
Where do I find the current stage of a process?
Only on the agency's own page for it. Steps, forms and timing are revised, and any secondhand summary, including this one, ages. Treat a description of a process as orientation and the agency page as the authority.
Is a designation report a reliable source about a building?
It is among the best available. It is researched by staff, sourced, and public. It is still written at a moment, so a report prepared decades ago may predate later alterations.
Why do assessment records and permit records describe different buildings?
Because they are made at different times for different purposes by different offices. Reconcile them by date and by question rather than by assuming an error.
Can I use these records to find out who lives somewhere?
You can, and this site will not help with it. Property records are public because ownership needs to be legible for legal purposes, which is not the same as a home address being publishable. Nothing here identifies a residence or an occupant.
What does a New York home sale cost in 2027?
On a $1.2 million resale, transfer taxes plus the buyer's mansion tax come to about 2.8 percent. Buyer closing costs run 1.5 to 3 percent for a co-op or condo and 2 to 4 percent for a house. Borough medians in 2026 ran from the mid $400,000s in the Bronx to about $1.1 million in Manhattan.
When does the 2027 assessment roll take effect?
The final roll is published in May 2026 and sets tax bills from July 1, 2026 to June 30, 2027. Contests go to the New York City Tax Commission, with a filing deadline in March.
