Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$894,130$355 / 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 94How 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 $510,000 on Mar 9, 2018

251 PROSPECT ST

FARMINGDALE, NY 11735
2.5
Baths
2,518 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$894K
$837K low$951K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$510,000 · Mar 9, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,471 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$521 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$261
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$260
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$518
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$521,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.28
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.Commercial/Industrial
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 570 ft²Shed · 136 ft²Patio · 990 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.

Neighborhood · ZIP 11735These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.86

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
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.33,412
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,932 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$129,849
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$157,978
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Owner Tools

Do you own this home?
Claim this home

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

251 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.

  • Worth more than 90% of homes in Farmingdale 11735
  • Costs less per square foot than 96% of homes in Nassau County
  • Bigger than 93% of homes in Farmingdale 11735
  • Has a bigger lot than 93% of homes in Farmingdale 11735
  • Older than 96% of homes in Farmingdale 11735

What homes are worth in Farmingdale 11735

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

This home
$512K$1.2M

This home is worth more than 90% of homes in Farmingdale 11735.

How it measures up in Farmingdale 11735

The dot is this home. The mark in the middle is the typical home in Farmingdale 11735.

Estimated value$894,130
CheaperTypical $717,320Pricier

Pricier than 90% of homes nearby

Price per ft²$355
CheaperTypical $478Pricier

Pricier than 6% of homes nearby

Living area2,518 ft²
SmallerTypical 1,516 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.28 ac
SmallerTypical 0.16 acBigger

Bigger than 93% of homes nearby

Year built1920
OlderTypical 1955Newer

Newer than 4% of homes nearby

How 251 Prospect St ranks against every home in each area.
MeasureThis homeFarmingdale 11735Nassau County
Estimated valuepricier than$894,13090% of homes60% of homes
Price per ft²pricier than$3556% of homes4% of homes
Living areabigger than2,518 ft²93% of homes83% of homes
Lot sizebigger than0.28 ac93% of homes89% of homes
Year builtnewer than19204% of homes5% of homes

About 251 Prospect St

How much is 251 Prospect St, Farmingdale, NY worth?

The TopHap Estimate for 251 Prospect St, Farmingdale, NY is $894,130 as of Aug 30, 2026. The likely range is $836,814 to $951,446. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 251 Prospect St, Farmingdale, NY last sell?

251 Prospect St, Farmingdale, NY last sold on Mar 9, 2018 for $510,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 251 Prospect St, Farmingdale, NY?

251 Prospect St, Farmingdale, NY has 2.5 bathrooms, 2,518 square feet of living space and a 0.28-acre lot.

When was 251 Prospect St, Farmingdale, NY built?

251 Prospect St, Farmingdale, NY was built in 1920, making it 106 years old. The building has 2 stories.

How does 251 Prospect St, Farmingdale, NY compare to other homes in Farmingdale 11735?

Among the 8,983 homes in Farmingdale 11735, it is worth more than 90% of them ($894,130 against a typical $717,320), its price per square foot is higher than 6% of them ($355 against a typical $478), it is bigger than 93% of them (2,518 ft² against a typical 1,516 ft²), its lot is bigger than 93% of them (0.28 ac against a typical 0.16 ac) and it is newer than 4% of them (1920 against a typical 1955). Measured against all of Nassau County, it is worth more than 60% 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 251 Prospect St, Farmingdale, NY?

The 2025 property tax bill for 251 Prospect St, Farmingdale, NY was $13,471. The county assessed it at $521.

More homes on Prospect St

Closest homes

More homes in Farmingdale 11735

Explore the area

See this home in context

Open 251 Prospect St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map