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Single Family ResidenceResidential
$1,993,208$1,567 / 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 80How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $1,950,000 on Sep 2, 2025

49 PROSPECT ST

SMITHTOWN, NY 11787
3
Beds
2.5
Baths
1,272 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1994
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$2M
$1.6M low$2.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,950,000 · Sep 2, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,721 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$878,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$580,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$297,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,514,827

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.0.21
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Inferior
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 1,488 ft²

Transaction History(1)

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.

E
Southampton Elementary SchoolB-
Elementary · Grades PK–4 · 0.6 mi
M
Southampton Intermediate SchoolC-
Middle · Grades 5–8 · 0.8 mi
H
Southampton High SchoolB-
High · Grades 9–12 · 1.0 mi

District: Southampton Union Free School District

Neighborhood · ZIP 11787These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.34,997
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,227 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,428
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$168,182
Average tempThe average temperature here across a full year.52°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

49 Prospect St 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 Smithtown 11787
  • Among the highest price per square foot in Smithtown 11787
  • Smaller than 84% of homes in Smithtown 11787
  • Has a smaller lot than 89% of homes in Smithtown 11787
  • Newer than 88% of homes in Smithtown 11787

What homes are worth in Smithtown 11787

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

This home
$535K$1.6M

This home is worth more than almost all homes in Smithtown 11787.

How it measures up in Smithtown 11787

The dot is this home. The mark in the middle is the typical home in Smithtown 11787.

Estimated value$1,993,208
CheaperTypical $794,774Pricier

Pricier than almost all homes nearby

Price per ft²$1567
CheaperTypical $443Pricier

Pricier than almost all homes nearby

Living area1,272 ft²
SmallerTypical 1,909 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.21 ac
SmallerTypical 0.38 acBigger

Bigger than 11% of homes nearby

Year built1994
OlderTypical 1965Newer

Newer than 88% of homes nearby

How 49 Prospect St ranks against every home in each area.
MeasureThis homeSmithtown 11787Suffolk County
Estimated valuepricier than$1,993,208almost all homes93% of homes
Price per ft²pricier than$1567almost all homes98% of homes
Living areabigger than1,272 ft²16% of homes27% of homes
Lot sizebigger than0.21 ac11% of homes31% of homes
Year builtnewer than199488% of homes81% of homes

About 49 Prospect St

How much is 49 Prospect St, Smithtown, NY worth?

The TopHap Estimate for 49 Prospect St, Smithtown, NY is $1,993,208 as of Sep 24, 2026. The likely range is $1,588,759 to $2,397,657. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 49 Prospect St, Smithtown, NY last sell?

49 Prospect St, Smithtown, NY last sold on Sep 2, 2025 for $1,950,000, according to the county's recorded deed.

How big is 49 Prospect St, Smithtown, NY?

49 Prospect St, Smithtown, NY has 3 bedrooms, 2.5 bathrooms, 1,272 square feet of living space and a 0.21-acre lot.

When was 49 Prospect St, Smithtown, NY built?

49 Prospect St, Smithtown, NY was built in 1994, making it 32 years old. It is a mobile home home. The building has 1 story.

What schools serve 49 Prospect St, Smithtown, NY?

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

How does 49 Prospect St, Smithtown, NY compare to other homes in Smithtown 11787?

Among the 11,476 homes in Smithtown 11787, it is worth more than almost all of them ($1,993,208 against a typical $794,774), its price per square foot is higher than almost all of them ($1567 against a typical $443), it is bigger than 16% of them (1,272 ft² against a typical 1,909 ft²), its lot is bigger than 11% of them (0.21 ac against a typical 0.38 ac) and it is newer than 88% of them (1994 against a typical 1965). Measured against all of Suffolk County, it is worth more than 93% of 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 49 Prospect St, Smithtown, NY?

The 2023 property tax bill for 49 Prospect St, Smithtown, NY was $1,721. The county assessed it at $878,600.

More homes on Prospect St

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Assigned schools

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