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Single Family ResidenceResidential
$9,999,999$1,441 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 58How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $21,956,000 on Apr 4, 2018

10 DEER RUN

WATER MILL, NY 11976
8
Beds
0
Baths
6,940 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.99 ac
Lot SizeThe size of the land the home sits on, from county records.
2016
Year BuiltThe year the home was originally built, according to county records.

Valuation

$10M
$8.4M low$10M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$21,956,000 · Apr 4, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$19,226 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$4,569,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,243,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,325,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$7,252,857

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.99
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 1,150 ft²

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Southampton Intermediate SchoolC-
Middle · Grades 5–8 · 3.7 mi
H
Southampton High SchoolB-
High · Grades 9–12 · 3.7 mi
E
Southampton Elementary SchoolB-
Elementary · Grades PK–4 · 4.1 mi

District: Southampton Union Free School District

Neighborhood · ZIP 11976These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.184
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.49

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.48%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.46%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.3,431
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.205 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$171,191
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$251,712
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

10 Deer Run measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the most valuable homes in Water Mill 11976
  • Costs more per square foot than 98% of homes in Suffolk County
  • Among the largest homes in Suffolk County
  • Has a bigger lot than 90% of homes in Suffolk County
  • Newer than 98% of homes in Suffolk County

What homes are worth in Water Mill 11976

Each bar is how many homes fall in that price range. The marker is this home.

This home
$1.3M$10M

This home is worth more than almost all homes in Water Mill 11976.

How it measures up in Water Mill 11976

The dot is this home. The mark in the middle is the typical home in Water Mill 11976.

Estimated value$9,999,999
CheaperTypical $5,365,279Pricier

Pricier than almost all homes nearby

Price per ft²$1441
CheaperTypical $1314Pricier

Pricier than 59% of homes nearby

Living area6,940 ft²
SmallerTypical 3,739 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.99 ac
SmallerTypical 1.07 acBigger

Bigger than 42% of homes nearby

Year built2016
OlderTypical 2005Newer

Newer than 83% of homes nearby

How 10 Deer Run ranks against every home in each area.
MeasureThis homeWater Mill 11976Suffolk County
Estimated valuepricier than$9,999,999almost all homesalmost all homes
Price per ft²pricier than$144159% of homes98% of homes
Living areabigger than6,940 ft²86% of homesalmost all homes
Lot sizebigger than0.99 ac42% of homes90% of homes
Year builtnewer than201683% of homes98% of homes

About 10 Deer Run

How much is 10 Deer Run, Water Mill, NY worth?

The TopHap Estimate for 10 Deer Run, Water Mill, NY is $9,999,999 as of Aug 30, 2026. The likely range is $8,444,435 to $9,999,999. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10 Deer Run, Water Mill, NY last sell?

10 Deer Run, Water Mill, NY last sold on Apr 4, 2018 for $21,956,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 10 Deer Run, Water Mill, NY?

10 Deer Run, Water Mill, NY has 8 bedrooms, 6,940 square feet of living space and a 0.99-acre lot.

When was 10 Deer Run, Water Mill, NY built?

10 Deer Run, Water Mill, NY was built in 2016, making it 10 years old. It is a mobile home home.

What schools serve 10 Deer Run, Water Mill, NY?

10 Deer Run, Water Mill, NY is assigned to Southampton Intermediate School (middle), rated C-; Southampton High School (high), rated B-; Southampton Elementary School (elementary), rated B-. All sit in Southampton Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10 Deer Run, Water Mill, NY compare to other homes in Water Mill 11976?

Among the 2,271 homes in Water Mill 11976, it is worth more than almost all of them ($9,999,999 against a typical $5,365,279), its price per square foot is higher than 59% of them ($1441 against a typical $1314), it is bigger than 86% of them (6,940 ft² against a typical 3,739 ft²), its lot is bigger than 42% of them (0.99 ac against a typical 1.07 ac) and it is newer than 83% of them (2016 against a typical 2005). Measured against all of Suffolk County, it is worth more than almost all homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 10 Deer Run, Water Mill, NY?

The 2024 property tax bill for 10 Deer Run, Water Mill, NY was $19,226. The county assessed it at $4,569,300.

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