A dollar rarely costs anything in real estate. In Brooklyn Heights this year, one dollar cost a buyer $5,000, and it wasn't a fluke or a typo in a contract. It was arithmetic. Cross from $1,999,999 to an even $2,000,000 and New York's mansion tax jumps from $19,999.99 to $25,000, a $5,000 swing for a single extra dollar of price. Cross from $2,999,999 to $3,000,001 and the jump is $7,500, this time for two dollars. The tax doesn't ramp up the way income tax brackets do. It applies to the entire purchase price the moment you cross a line, so every threshold is a cliff, not a slope.
Most Brooklyn buyers never think about this because most Brooklyn sales never get near it. Brooklyn Heights isn't most of Brooklyn. Here, the cliffs sit inside the neighborhood's ordinary price range, not its exceptions, and a new statewide tax proposal advanced this spring means the pressure at these lines is likely to get more attention, not less.
The Tax Doesn't Ramp, It Drops
New York created the mansion tax in 1989 as a flat 1% charge on residential sales of $1 million or more. In 2019, the state layered seven additional tiers on top, scaling up to 3.9% on sales of $25 million and above. The rate that applies is whatever tier your final contract price lands in, and it applies to the whole price, not just the amount above the threshold.
That distinction is what makes the tax expensive to misjudge. A buyer who assumes the extra cost near a bracket line is small enough to absorb is usually wrong by five figures.
| Price crosses this line | Tax before | Tax after | Cost of crossing |
|---|---|---|---|
| $999,999 to $1,000,000 | $0 | $10,000 | $10,000 |
| $1,999,999 to $2,000,000 | $19,999.99 | $25,000 | $5,000 |
| $2,999,999 to $3,000,001 | $37,500 | $45,000 | $7,500 |
These three lines happen to fall squarely across the price band where Brooklyn Heights condos and co-ops actually trade.
Why Most of Brooklyn Never Feels This
Borough-wide, the median sale price for Brooklyn co-ops and condos was $840,000 in the first quarter of 2026, according to a Brown Harris Stevens report covered by the Brooklyn Eagle. By July 2026, the broader Brooklyn median sale price across all property types sat at $1 million. Either number keeps a typical Brooklyn deal at or below the first mansion tax threshold, meaning a large share of transactions across the borough never trigger the tax at all.
Brooklyn Heights is priced differently. The neighborhood's three-month median sale price was $1.9 million as of July 2026, according to Redfin, up 48% from the same three-month window a year earlier. That median sits close enough to the $2 million line that a buyer negotiating the last few thousand dollars of a deal here isn't just negotiating price. They're deciding which tax bracket they end up in.
Where Brooklyn Heights Actually Sits
Different data sources measure the neighborhood a little differently, and the gaps between them tell their own story. PropertyShark put Brooklyn Heights' median price per square foot at $1,808 in the second quarter of 2026, flat year over year, on just 54 recorded deals, a volume down more than 20% from a year earlier. Zillow's home value index for the neighborhood was $1,515,242 as of late July 2026, up 6.9% over the past year, with homes going to pending in around 37 days. One brokerage's market guide put the neighborhood's median listing price near $2.3 million against actual closed sales averaging $1.7 million in late 2025, and its separate luxury market analysis placed Brooklyn Heights just behind DUMBO for the highest median sale price in the borough, with Brooklyn's luxury tier starting around $2.425 million.
None of these numbers argue with each other so much as describe different slices of the same market. Condos and co-ops cluster in the $1.7 million to $2.3 million range, right on top of the $2 million bracket line. Single-family homes sit much higher. One ranking of Brooklyn's most expensive neighborhoods placed Brooklyn Heights first in the borough for median single-family home price, at $6.5 million, based on NYC Department of Finance records from April 2025 through March 2026. That figure sits above the $5 million line, which used to matter only for the mansion tax's higher tiers. As of this spring, it matters for something else too.
Two Very Different Deals, Same Neighborhood, Same Year
The range this creates is real, not theoretical. A Brooklyn Heights townhouse at 192 Columbia Heights sold in an off-market deal for $24.5 million this year, the borough's priciest residential sale of 2026 and the third-most expensive Brooklyn sale on record. Actress Amy Schumer sold her Cranberry Street townhouse, a 19th-century home once featured in the film Moonstruck, for $11 million this year, a $1.25 million loss against her 2022 purchase price after a summer price cut. Meanwhile, a five-story Italianate brownstone at 261 Hicks Street was on the market this summer asking $6.9 million, built as a three-family conversion with room to configure as a private mansion or income property.
Those three numbers, $24.5 million, $11 million, and $6.9 million asking, all sit well clear of the $2 million and $3 million lines that govern the neighborhood's condo and co-op stock. But they sit close to a different line entirely, one that didn't exist in New York until this spring.
The Line Everyone's Watching Now
New York City entered 2026 facing a $5.4 billion budget gap. In March, the state legislature's one-house budget proposals floated raising mansion tax rates by roughly 1.4 percentage points on higher-value sales. That increase never made it into the final state budget. What did happen, in a joint announcement by Mayor Zohran Mamdani and Governor Kathy Hochul in April 2026, was a proposal for what officials are calling New York's first pied-à-terre tax: an annual surcharge on one- to three-family homes, condos, and co-ops valued at $5 million or more, but only when the owner's primary residence is outside New York City. The policy is projected to raise about $500 million a year and specifically targets non-resident owners who use city real estate as a store of value rather than a home. As of this writing, specific rates have not been finalized and the measure still has to clear the state budget process.
For Manhattan's priciest buyers, the effect is direct. For Brooklyn Heights, the effect may be indirect but larger. One brokerage's guide to the new tax flagged Brooklyn brownstones and waterfront towers in Williamsburg, DUMBO, and Brooklyn Heights specifically as likely beneficiaries of substitution demand, as out-of-state and international buyers who want a New York foothold but want to stay under the $5 million pied-à-terre line look to Brooklyn instead of Manhattan. That analysis expects competition to intensify specifically in the $3 million to $5 million band, which happens to be exactly where Brooklyn Heights' upper-tier condos, townhouse conversions, and smaller single-family homes already sit.
In other words, the neighborhood's own median condo price bumps against the $2 million mansion tax line today, and its townhouse stock now sits in the price band a new tax is expected to funnel more buyers into tomorrow.
What to Check Before You Sign
If you're transacting in Brooklyn Heights this year, a few things are worth confirming before a contract price gets finalized:
- Ask your attorney to calculate the mansion tax at your exact contract price, not a rounded estimate, since the tiers apply to the whole price the moment you cross a line.
- If your offer or asking price sits within a few thousand dollars of $1 million, $2 million, or $3 million, discuss with your agent and attorney whether a small adjustment in either direction changes your bracket.
- If you're buying above $5 million and this will not be your primary residence, confirm the current status of the pied-à-terre tax with your attorney, since the proposal was only announced this spring and final rates have not been set.
- Remember that seller credits at closing don't change your bracket. The tax is calculated on the stated contract price, not your net cost after concessions.
A Few Questions Worth Asking Directly
Does the mansion tax apply to co-ops as well as condos and townhouses? Yes. The tax applies equally across condos, co-ops, and one- to three-family homes, with no exemption based on property type.
Who actually pays the mansion tax, buyer or seller? The buyer pays it at closing, separate from the transfer taxes the seller typically covers.
Is the pied-à-terre tax the same thing as the mansion tax? No. The mansion tax is a one-time cost paid at closing regardless of who lives in the home. The pied-à-terre tax, proposed this spring by Mayor Mamdani and Governor Hochul, would be a recurring annual charge on non-primary residences valued at $5 million or more, though it still needs to clear the state budget process before it takes effect.
Every bracket line in this piece is public law, but where your specific contract price lands relative to those lines is not something a listing sheet will tell you. That's a conversation worth having before you write an offer or set an asking price, not after. If you're weighing a purchase or sale in Brooklyn Heights and want to work through what a specific price point actually means for your closing costs, The Rosen Team is glad to talk it through. Schedule a 10-minute introductory call and bring your numbers.
