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Single Family ResidenceResidential
$404,855$472 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $275,000 on Nov 16, 2016

20 S PROSPECT AVE

PATCHOGUE, NY 11772
2
Beds
1
Baths
857 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
1
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.

Valuation

$405K
$369K low$441K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$275,000 · Nov 16, 2016
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$161,855
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$129,484
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.59%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$243,000
MCS MTG BANKERS · recorded Nov 16, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,592 (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.$1,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$270,833

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.Cape Cod
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.19
HeatingThe type of heating system in the home.Radiant
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront

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.

E
River Elementary SchoolC
Elementary · Grades PK–5 · 0.4 mi
M
South Ocean Middle SchoolC
Middle · Grades 6–8 · 0.9 mi
H
Patchogue-Medford High SchoolC+
High · Grades 9–12 · 4.0 mi

District: Patchogue-Medford Union Free School District

Neighborhood · ZIP 11772These 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.103
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 100.59

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
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.44,232
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,172 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,427
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$130,441
Average tempThe average temperature here across a full year.52°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.58%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

20 S Prospect Ave 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 less than 96% of homes in Patchogue 11772
  • Costs more per square foot than 76% of homes in Patchogue 11772
  • Smaller than 95% of homes in Suffolk County
  • Has a smaller lot than 75% of homes in Suffolk County
  • Older than 95% of homes in Suffolk County

What homes are worth in Patchogue 11772

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

This home
$355K$1.2M

This home is worth more than 4% of homes in Patchogue 11772.

How it measures up in Patchogue 11772

The dot is this home. The mark in the middle is the typical home in Patchogue 11772.

Estimated value$404,855
CheaperTypical $585,663Pricier

Pricier than 4% of homes nearby

Price per ft²$472
CheaperTypical $398Pricier

Pricier than 76% of homes nearby

Living area857 ft²
SmallerTypical 1,472 ft²Bigger

Bigger than 8% of homes nearby

Lot size0.19 ac
SmallerTypical 0.25 acBigger

Bigger than 29% of homes nearby

Year built1930
OlderTypical 1958Newer

Newer than 20% of homes nearby

How 20 S Prospect Ave ranks against every home in each area.
MeasureThis homePatchogue 11772Suffolk County
Estimated valuepricier than$404,8554% of homes4% of homes
Price per ft²pricier than$47276% of homes65% of homes
Living areabigger than857 ft²8% of homes5% of homes
Lot sizebigger than0.19 ac29% of homes25% of homes
Year builtnewer than193020% of homes5% of homes

About 20 S Prospect Ave

How much is 20 S Prospect Ave, Patchogue, NY worth?

The TopHap Estimate for 20 S Prospect Ave, Patchogue, NY is $404,855 as of Jul 14, 2026. The likely range is $368,597 to $441,113. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 S Prospect Ave, Patchogue, NY last sell?

20 S Prospect Ave, Patchogue, NY last sold on Nov 16, 2016 for $275,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 S Prospect Ave, Patchogue, NY?

20 S Prospect Ave, Patchogue, NY has 2 bedrooms, 1 bathrooms, 857 square feet of living space and a 0.19-acre lot.

When was 20 S Prospect Ave, Patchogue, NY built?

20 S Prospect Ave, Patchogue, NY was built in 1930, making it 96 years old. It is a cape cod home. The building has 1 story.

What schools serve 20 S Prospect Ave, Patchogue, NY?

20 S Prospect Ave, Patchogue, NY is assigned to River Elementary School (elementary), rated C; South Ocean Middle School (middle), rated C; Patchogue-Medford High School (high), rated C+. All sit in Patchogue-Medford Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 S Prospect Ave, Patchogue, NY compare to other homes in Patchogue 11772?

Among the 13,190 homes in Patchogue 11772, it is worth more than 4% of them ($404,855 against a typical $585,663), its price per square foot is higher than 76% of them ($472 against a typical $398), it is bigger than 8% of them (857 ft² against a typical 1,472 ft²), its lot is bigger than 29% of them (0.19 ac against a typical 0.25 ac) and it is newer than 20% of them (1930 against a typical 1958). Measured against all of Suffolk County, it is worth more than 4% 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 20 S Prospect Ave, Patchogue, NY?

The 2024 property tax bill for 20 S Prospect Ave, Patchogue, NY was $7,592. The county assessed it at $1,300.

Closest homes

More homes in Patchogue 11772

Assigned schools

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