A 17.71-acre lot on Kendall Way in Brookline, New Hampshire is priced at $275,000, or roughly $15,500 an acre. A few minutes away, on Post Office Drive, a 1.13-acre lot with no house on it is asking $125,000, north of $110,000 an acre. Same town, same rural road network, same zoning map. Why does raw acreage in Brookline sell for a fraction of what a builder pays, per acre, for a lot barely big enough to meet the town's own minimum?

The answer isn't location or road frontage. It's a New Hampshire tax program that most buyers have never heard of until they're already under contract, and a town growth ordinance that decides how fast anyone can actually act on what they bought.

Why the Big Parcels Are Priced Like Farmland

Under RSA 79-A, New Hampshire's Current Use program, a landowner with at least ten contiguous acres of forest, farm, or unproductive land can have that acreage assessed at its value as open space rather than its value as a future building lot. The program has existed since 1973, and it now covers more than half the state's land area. A parcel that would be worth its full market rate if sold as a homesite is instead taxed on what it produces as woodland or pasture, which is often a fraction of the number a real estate appraisal would put on it.

That's the mechanism behind the Kendall Way price tag. Large, wooded Brookline parcels enrolled in Current Use have spent years, sometimes decades, carrying tax bills based on forest value. Nobody selling that land has had to price it as if it were shovel-ready, because for tax purposes it hasn't been. The seller isn't discounting the land out of generosity. The land has genuinely never been taxed as development-ready acreage, and the sale price often reflects that history more than it reflects what the buyer plans to do next.

Even a parcel with an existing house can carry this status. The program excludes only the building footprint and immediately maintained yard, typically an acre or two, from Current Use assessment. The rest of a twelve or fifteen-acre lot behind the house can remain enrolled, taxed as forest, while the homeowner lives on the small carved-out piece. That's a normal, entirely legal arrangement in a town like Brookline. It's also exactly the kind of parcel a buyer might look at and see only "large lot, mature trees, privacy," without registering that most of the acreage sits under a different tax classification than the house.

The Bill That Follows the Land, Not the Seller

Here's the part that catches people off guard. Current Use status isn't a discount that disappears at closing. It transfers with the deed. According to guidance from UNH Cooperative Extension, land enrolled in the program "remains in current use regardless of who owns it," and the tax benefit passes to whoever buys it. So does the obligation.

The moment the land use changes, whether that's a foundation excavation, a cleared building pad, or a subdivision that creates a lot under ten acres, the town is entitled to a one-time Land Use Change Tax equal to 10 percent of the land's full market value, calculated as if it had never been in Current Use. The New Hampshire Municipal Association's guidance on the subject is direct about who owes it: when a change in use happens after a sale, the new owner is responsible for paying, not the person who enrolled the land in the first place. A law firm that handles these matters regularly, Welts, White & Fontaine, describes the trigger even more specifically: the tax typically becomes due when actual construction begins or when excavation occurs, and the town's assessment at that moment sets the number.

Run it against Kendall Way. If a buyer purchased that 17.71-acre parcel, cleared five acres for a house and driveway, and the town's assessor set the full market value of that changed portion at, say, $400,000, the Land Use Change Tax on that slice alone would run around $40,000. That's a bill layered on top of the $275,000 purchase price, on top of construction costs, and it doesn't show up on a listing sheet.

It also doesn't always show up right away. Towns have up to 18 months from the date they receive written notice, or from the date they discover the change themselves, to send the bill. A buyer who breaks ground in spring might not see the invoice until well into the following year, long after they've moved in and settled into a monthly budget that never accounted for it.

A Town Built Around Large Lots, Not Small Ones

Brookline's own zoning reinforces why this matters more here than in a town full of half-acre subdivisions. The Zoning and Land Use Ordinance sets a minimum of one contiguous acre, excluding wetlands, for a building lot in the town's general residential districts. That's a modest floor by New Hampshire standards, but it still means the smallest legal buildable lots in Brookline start well above a typical suburban quarter-acre, and it's nowhere near the ten-acre threshold where Current Use eligibility begins. The gap between "smallest lot you're allowed to build on" and "smallest parcel that qualifies for Current Use" is exactly the zone where a lot of Brookline's larger, cheaper-looking land sits, and where the tax exposure lives.

Land listings around town show the pattern clearly. Parcels in the twelve to eighteen-acre range, priced well below what their acreage would suggest if it were all buildable, sit alongside one and two-acre lots priced several times higher per acre. Both are legitimate Brookline real estate. They are not the same product, and comparing their sticker prices without accounting for Current Use status is comparing a raw material to a finished good.

The Second Gate: How Many Permits the Town Will Actually Issue

Paying the Land Use Change Tax gets a parcel out of Current Use. It doesn't guarantee a building permit on the timeline a buyer expects. Brookline reinstated its Growth Management Ordinance in 2022, and under that ordinance the Planning Board conducts an annual review to determine whether the ordinance is still necessary and, if so, how many residential building permits the town will issue for the following calendar year, based on a formula tied to the town's capacity for schools and services. The ordinance applies to building permits for new dwelling units. It doesn't touch permits for renovating an existing house, and there are carve-outs for specific housing types, but for someone planning to build a new home on raw acreage, the number of available permits in a given year is a separate, town-level constraint that sits on top of the tax question.

That combination, current-use tax exposure plus a capped annual permit pool, is the real story behind Brookline's land prices. The town isn't hiding either mechanism. Both are public record. But neither one is priced into a listing, and neither shows up until a buyer is already deep into planning.

Running the Numbers Before You Write an Offer

Before making an offer on acreage in Brookline, a few questions are worth asking early, ideally before an offer goes in rather than during due diligence:

• Is the parcel currently enrolled in Current Use? The town's assessing office keeps the A-10 application on file for enrolled parcels, and it's public record.
• If enrolled, how much of the parcel is excluded from Current Use already, for an existing house or driveway, versus how much would need to be reclassified for the buyer's plans?
• What would the assessor estimate as the full market value of the acreage that would change use, and has anyone asked the assessing office for a rough figure before the offer is written?
• Is this year's Growth Management Ordinance permit allocation already spoken for, and if so, what does that mean for a timeline that assumes breaking ground next spring?
• Who bears the Land Use Change Tax under the purchase and sale agreement? New Hampshire law makes the party who changes the use responsible, but a purchase contract can address expectations up front, and a real estate attorney familiar with RSA 79-A can help structure that conversation before it becomes a dispute.

None of this makes Brookline land a bad buy. It makes the math different from what the listing price alone suggests, and different from what a buyer would face on a smaller, already-developed lot elsewhere in town.

Quick Answers Before You Compare Parcels

Does this apply to every lot in Brookline? No. Only acreage actively enrolled in the Current Use program carries the Land Use Change Tax exposure. A one or two-acre residential lot that's never been in the program, and most of the smaller lots in Brookline's village areas fall into that category, isn't affected by this at all.

Who actually pays the tax, buyer or seller? New Hampshire law places the obligation on whoever owns the land when the use changes, which in a typical scenario is the buyer, since they're the one building. Purchase and sale agreements can address this directly, which is why involving a real estate attorney early matters more here than in a standard resale.

Where do I check if a specific Brookline parcel is enrolled? The town's assessing office keeps records on file, and current use status is also reflected on the property's assessment card, both available through the town.

Comparing acreage in Brookline means comparing what each parcel is actually taxed on, not just what it's listed for. If you're looking at land here and want a straight read on what a specific parcel's current use status and the town's permit timeline would mean for your project, Purple Finch Properties can walk through the numbers with you before you write an offer, not after.