Hamptons Property Annual Carrying Cost Breakdown

A four-bedroom Hamptons house with a pool rented for the full Memorial Day to Labor Day season at a median of roughly $75,000 in 2025, up 7% year over year, according to Out East rental data. That number sounds like real money until it meets the carrying cost on a property whose median sale price crossed $2 million for the first time in history that same year, per the William Raveis 2025 year-end report. The gap between those two figures is the entire story of Hamptons ownership.

This breakdown models the annual cost of owning a second home in the Hamptons, the rental income that offsets it, and what remains. The featured calculation is the Finluxy Vacation Home Net Carry Rate — annual net carrying cost after rental income, expressed as a percentage of purchase price. The analysis treats the property as a second home for high-income buyers rather than a pure investment, because that is how nearly every Hamptons owner actually files and uses it.

The numbers at a glance

Five figures define the decision for a $3 million East Hampton second home financed with 25% down.

Sources: William Raveis 2025 year-end report; Curinos via Experian (April 2026); Out East 2025 rental data; Finluxy TCO model. Net Carry Rate derived below.

Building the carrying cost

Start with financing. The average second home mortgage rate reached 7.60% in April 2026 for a borrower with a 720 FICO score, per Curinos data reported by Experian, against 6.71% for a primary residence — a spread that sits at the wider end of the typical 0.25% to 0.50% premium that Bankrate and JVM Lending both cite for 2026. On a $3 million purchase with 25% down, the financed amount is $2.25 million. At 7.60% on a 30-year fixed, principal and interest run roughly $15,900 per month, or about $190,800 a year. The second home mortgage rate premium alone adds close to $20,000 annually versus primary-residence pricing on the same balance.

Property taxes on the East End behave unlike the rest of Suffolk County. The county-wide effective rate sits near 2.42%, but East Hampton’s residential assessment ratio is among the lowest in the state — East Hampton Village reports that assessed value averages just 2% to 4% of market value. The practical result is an effective annual property tax that lands well below the Suffolk average for high-value homes. Modeled at roughly 0.6% of market value, a $3 million home generates about $18,000 in annual property tax. Figure precision is limited here: the East Hampton Tax Receiver publishes the 2025–2026 roll, but no single published rate maps cleanly to a specific market-value tier, so this is a defensible mid-range estimate rather than a billed figure.

Maintenance is not optional on a coastal property exposed to salt air and freeze-thaw cycles. The cluster framework applies 1% to 2% of value annually for vacation properties; at the midpoint of 1.5%, a $3 million home carries $45,000 in maintenance and reserves. Insurance for a coastal New York second home, including wind and flood coverage where applicable, adds materially — modeled at roughly $9,000 annually. Utilities for a year-round-capable house used seasonally run an estimated $7,000. Travel between Manhattan and the East End, the implicit cost most owners ignore, adds a few thousand more.

One charge does not recur. The Peconic Bay Community Preservation Fund transfer tax runs 2.5% in East Hampton and Southampton as of April 2023, per the fund’s published rate — that is $75,000 on a $3 million purchase, paid once at closing, not annually. It belongs in the acquisition budget, not the carrying cost, and this analysis excludes it from annual TCO.

The rental offset is smaller than the headline

Hamptons rental marketing leads with gross seasonal numbers. A typical four-bedroom with a pool rented for $150,000 to $225,000 for the full Memorial Day to Labor Day season in 2025, per Social Life Magazine’s market data, while the median full-summer lease across the East End was about $75,000, up 7% year over year, according to Out East. The mid-market property modeled here sits between those poles.

Gross rent is not net rental income. Property management for vacation rentals runs 20% to 30% of gross revenue under the cluster framework, and Hamptons seasonal management — booking, turnover, concierge, maintenance coordination — sits at the high end. Assume a $75,000 gross seasonal lease. Management at 25% removes $18,750. Vacancy and concession risk, plus the reality that the owner blocks personal-use weeks, trims another slice. What survives as net rental income is roughly $52,500 in a strong year, and less when the owner uses the house during peak weeks they would otherwise rent.

That last point is where most coverage goes wrong, and it deserves its own section.

What the data shows that most coverage overlooks

The published occupancy and revenue figures describe two completely different Hamptons rental markets, and conflating them produces fantasy math. AirROI’s 2026 dataset for East Hampton short-term rentals reports average annual revenue of $49,441 at 33.8% occupancy and a $925 average nightly rate across just 31 active year-round listings — a thin, nightly-booking micro-market. The seasonal lease market is an entirely separate channel: a single $75,000 to $225,000 summer tenant, not a stream of weekend Airbnb bookings.

An owner who models nightly short-term rental revenue from AirDNA income potential against real ownership cost and then also assumes personal summer use is double-counting the asset. The house cannot simultaneously host paying guests at 33.8% occupancy and serve as the family’s August retreat. Hamptons demand is brutally seasonal — August is the strongest month and February the softest in the AirROI data — so the personal-use weeks an owner most wants are precisely the weeks of peak rental value. Every week of personal use during the season subtracts directly from the offset, and the IRS is watching how many weeks that is.

The IRS 14-day rule changes the math

Tax treatment turns on personal use. Under IRS Publication 527 (2025 edition) and IRS Topic 415, a dwelling is treated as a residence — not a rental — when personal use exceeds the greater of 14 days or 10% of the days rented at fair market value. Cross that line and deductible rental expenses are capped at rental income; losses cannot offset other income.

Two scenarios bracket the outcome. Model both, as the cluster framework requires.

Source: IRS Publication 527 (2025); IRS Topic 415. Passive-activity and at-risk rules apply; consult a tax professional.

For most Hamptons owners the second scenario is the binding one. A family that spends three or four summer weeks in the house and rents the rest will almost certainly exceed the 14-day threshold, which reclassifies the property and strips the loss deductions that make the rental pencil out. The IRS 14-day rule tax math for vacation properties is the single largest swing factor in after-tax carry, larger than a half-point move in the mortgage rate.

Calculating the Finluxy Vacation Home Net Carry Rate

The Net Carry Rate strips away marketing and states the annual cost of holding the asset as a percentage of what you paid. Annual TCO minus net rental income, divided by purchase price.

Sources: Curinos via Experian (April 2026) for mortgage rate; East Hampton Village and Suffolk County assessment data for tax modeling; Out East and Social Life Magazine (2025) for rental income; cluster TCO framework for maintenance and management. Figures rounded; the snapshot block above used a lighter-financing variant — see methodology.

A correction on the snapshot: the glance table reported a 6.1% rate against a $236,000 TCO using a 30% down payment and a more conservative maintenance assumption. The full model above uses 25% down and midpoint maintenance, producing $273,800 TCO and a 7.4% Net Carry Rate. Both are defensible; the spread illustrates how sensitive the metric is to financing and maintenance assumptions. The reader should treat the Net Carry Rate as a range of roughly 6% to 7.5% for a financed mid-market Hamptons second home, not a single number.

For context against the cluster’s own benchmark, the example lake house carries at 4.2% per year. The Hamptons runs materially higher because price-to-rent is worse: seasonal rent recovers a smaller fraction of a far larger purchase price. A buyer comparing destinations would find a lake house year-round ownership cost or a Colorado mountain home annual cost easier to offset through rental than a Hamptons property of equivalent prestige.

Why the rental offset barely moves the needle

Run the sensitivity. On the $3 million home, doubling net rental income from $52,500 to $105,000 — which would require a top-tier $200,000-plus gross seasonal lease with disciplined management and minimal personal use — drops the Net Carry Rate only from 7.4% to 5.6%. The mortgage dominates everything. Until rates fall meaningfully or the buyer pays cash, rental income is a partial rebate on the carry, not a path to break-even.

Cash changes the picture more than rent does. Strip out the $190,800 mortgage and the all-cash $3 million buyer carries about $83,000 a year before rental, $30,500 after — a Net Carry Rate near 1.0%. That is the real Hamptons trade-off: the property is a reasonable hold for a cash buyer treating it as a lifestyle asset, and an expensive one for a financed buyer expecting rent to carry it. Whether rent can ever cover the costs is the question explored in second home rental income and whether it covers costs, and in the Hamptons at current rates, the financed answer is no.

What this means for a $150k+ household

A household earning $150,000 to $300,000 should read these figures as a warning rather than a plan. A net annual carry of $140,000 to $220,000 on a financed Hamptons property exceeds the gross income of most households in that band. The Hamptons mid-market is not a $150k-household second home; it is a multimillion-dollar asset that pencils only for cash buyers or households well into seven-figure net worth using the property as a lifestyle holding.

For households at the upper end of the bracket and above who are serious, three thresholds matter. First, the down payment: 25% on a $2 million home is $500,000 in cash before a dollar of carry, and lenders want reserves on top. Second, the SALT deduction cap rose to $40,000 for 2025 through 2028 under the 2025 tax law, phased down for higher-income taxpayers — relevant because East Hampton property taxes plus state income tax will exhaust that cap quickly, leaving the marginal property-tax dollar non-deductible. Third, the 14-day rule: a household that wants genuine summer use should model the property as a personal residence with capped deductions, not as a loss-generating rental, because the usage pattern they actually want triggers the reclassification. Running the property management fees for second homes and the vacation home net carry rate on conservative assumptions before signing is the difference between a lifestyle purchase made with eyes open and a cash-flow surprise every August.