At the closing table, the number usually lands late in the stack of documents, after the deed, after the title policy, sometimes after the buyer has stopped reading closely. It is the Peconic Bay Region Community Preservation Fund tax, and on a Sagaponack purchase it tends to be large enough that people ask their attorney to explain it twice. The confusion is rarely about whether the tax exists. Anyone who has spent ten minutes researching Hamptons closing costs already knows there is a transfer tax funding land preservation. The confusion is about the exemption they read online, the one that is supposed to shave a few hundred thousand dollars off the taxable amount. In Sagaponack, that exemption almost never applies, and understanding why changes how a buyer should budget for closing day.

A tax with a longer history than most buyers assume

The Community Preservation Fund was not created recently and was not created as a flat rate. Voters in the five East End towns, East Hampton, Riverhead, Shelter Island, Southampton, and Southold, approved the original 2% real estate transfer tax by referendum in 1998 to fund farmland, open space, and historic preservation. A 2006 vote extended collection from 2020 out to 2030, and a 2016 referendum pushed that horizon further, to 2050, while giving each town the option to direct up to 20% of the fund toward water quality projects. In 2022, voters in East Hampton, Shelter Island, Southampton, and Southold approved an additional 0.5% tax to seed a Community Housing Fund. Combined with the original 2%, that brought the rate in those four towns to 2.5%, effective for conveyances on or after April 1, 2023. Riverhead did not adopt the housing fund add-on and still collects at the original 2%.

Sagaponack sits inside the Town of Southampton, so every closing here runs at the 2.5% combined rate.

The exemption has an edge, not a slope

Here is where the confusion actually starts. The Town of Southampton's own guidance describes an exemption: the first $400,000 of an improved residential parcel is exempt from the tax, and the first $100,000 of a vacant, unimproved parcel is exempt, provided the consideration is $2,000,000 or less. Most explainers stop at that sentence and let the reader assume the exemption phases in gradually as price rises, the way a tax bracket might.

It does not work that way. The $2,000,000 threshold is a cliff, not a slope. Cross it by one dollar and the exemption is not reduced. It disappears entirely. A property that closes at exactly $2,000,000 gets $400,000 knocked off the taxable base. A property that closes at $2,000,001 gets nothing knocked off at all. The buyer on the wrong side of that line pays 2.5% on the full purchase price, not on the purchase price minus an allowance.

For a straightforward way to see the gap, the math looks like this:

Crossing the line by a single dollar costs exactly $10,000, which is 2.5% of the $400,000 allowance that vanishes. That gap holds steady no matter how far over $2,000,000 the final number lands. It is the same $10,000 whether the sale closes at $2.1 million or $7 million.

Why Sagaponack sits nowhere near that line

This is the part that matters for anyone actually shopping in Sagaponack. The cliff at $2,000,000 is a meaningful negotiating consideration in parts of the East End where home prices routinely sit close to that number. It is close to irrelevant here, because Sagaponack does not transact anywhere near $2,000,000.

Sagaponack's zip code, 11962, has ranked among the most expensive in the country for years. A 2025 ranking by PropertyShark, cited in Hamptons real estate coverage published this spring, placed it third nationally by median sale price, just behind Atherton, California, with figures approaching $6 million. As of mid-2025, other trackers put the number higher still, near $7.5 million. Even the more conservative of these figures lands at roughly three times the exemption threshold.

The practical result is that the $400,000 improved-parcel exemption, the one every generic CPF explainer describes as a benefit, functions as a rounding error in Sagaponack rather than a meaningful offset. A buyer here should not budget the tax as "2.5% minus an allowance." The realistic budgeting assumption is 2.5% of the entire purchase price, full stop.

Compare that to Bridgehampton, just to the west, where the median sale price ran closer to $3 million in 2025, or to Riverhead, where the town kept its exemption schedule at $150,000 for an improved primary residence and $75,000 for vacant land, with the same rule that anything over $2,000,000 in consideration forfeits the exemption entirely. In those markets, a meaningful share of transactions still cluster near the threshold, so the cliff genuinely shapes how sellers and buyers negotiate price. In Sagaponack, the conversation about the exemption is mostly academic. The number that actually matters is 2.5% of everything.

What that looks like in real dollars

Run the math at Sagaponack's own price points and the scale becomes obvious fast. At a $6 million sale, the CPF and Community Housing Fund tax comes to $150,000. At $7.5 million, it is $187,500. On one of the multi-acre compounds that have listed at $25 million or more in recent years, the tax alone exceeds $625,000, a figure that has nothing to do with legal fees, title insurance, or any other line on the closing statement. None of it touches the $400,000 exemption, because none of it is anywhere close to $2,000,000.

This applies to land as well as improved homes. Sagaponack's agricultural reserve overlay keeps a meaningful share of its acreage in active farmland, and vacant parcels here trade at prices that clear the $2,000,000 ceiling just as routinely as improved ones. Anyone buying raw land with development plans should assume the same full 2.5% exposure, since the smaller $100,000 vacant-land exemption is subject to the identical cliff.

The money is due separately, and it moves through a specific office

The tax is owed by the buyer, referred to in the statute as the grantee, not the seller. It is collected by the title closer at the time of closing and filed with the deed at the Suffolk County Clerk's Office when the new deed is recorded. That mechanic matters practically. This is not a cost that gets rolled into a mortgage calculation the way a lender's origination fee might. It is a separate sum a buyer needs available at the table, on top of a down payment and standard closing costs.

There is a first-time homebuyer exemption on the books, administered through the Town of Southampton's Community Preservation Office at 24 West Montauk Highway in Hampton Bays. It exists as a distinct category from the price-based exemption discussed above, and it is worth knowing the office exists if a transaction might qualify. For the typical Sagaponack purchase, a multi-million dollar seasonal or full-time residence, it is not the mechanism most buyers will end up using.

A short FAQ

Does the CPF tax apply to vacant land, or only to houses? Both. Improved residential parcels get a $400,000 exemption and vacant, unimproved parcels get a $100,000 exemption, but in each case only where the consideration is $2,000,000 or less.

Who pays the tax, buyer or seller? The buyer. The statute defines the person responsible as the grantee, the party purchasing the property.

Is Sagaponack's rate different from the rest of the Hamptons? The rate is set at the town level, not the village level. Sagaponack is inside the Town of Southampton, which moved to the combined 2.5% rate for conveyances starting April 1, 2023, along with East Hampton, Shelter Island, and Southold. Riverhead has not adopted the additional 0.5% and remains at 2%.

Understanding where a tax cliff sits, and knowing when it simply does not apply to the market you are buying in, is the kind of detail that separates a rough estimate from an actual closing budget. If you are weighing a purchase in Sagaponack or comparing it against other pockets of the East End, The Lori Schiaffino Team can walk through what a specific price point actually costs to close, line by line, before you are sitting at the table reading it for the first time. Work With Us.