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Single Family ResidenceResidential
$988,415$367 / 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 92How 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 $870,000 on Apr 22, 2025

20 OAK ST

SAINT JAMES, NY 11780
4
Beds
2
Baths
2,691 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.
0.48 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$988K
$906K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$870,000 · Apr 22, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,096 (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.$6,112 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$230
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,882
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$764,000

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.Colonial
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.48
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.Suburban
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 120 ft²Porch · 1,912 ft²

Transaction History(6)

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.

H
Smithtown High School EastA+
High · Grades 9–12 · 0.7 mi
E
Mills Pond Elementary SchoolA-
Elementary · Grades KG–5 · 0.8 mi
M
Great Hollow Middle SchoolB
Middle · Grades 6–8 · 1.8 mi

District: Smithtown Central School District

Neighborhood · ZIP 11780These 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.37
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.0%
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.16,050
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,043 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$149,578
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,897
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

20 Oak 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 83% of homes in St. James
  • Costs less per square foot than 91% of homes in St. James
  • Bigger than 88% of homes in Suffolk County
  • Has a bigger lot than 73% of homes in Suffolk County
  • Newer than 71% of homes in St. James

What homes are worth in Saint James 11780

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

This home
$451K$2.6M

This home is worth more than 63% of homes in Saint James 11780.

How it measures up in Saint James 11780

The dot is this home. The mark in the middle is the typical home in Saint James 11780.

Estimated value$988,415
CheaperTypical $844,050Pricier

Pricier than 63% of homes nearby

Price per ft²$367
CheaperTypical $453Pricier

Pricier than 10% of homes nearby

Living area2,691 ft²
SmallerTypical 2,160 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.48 ac
SmallerTypical 0.48 acBigger

Bigger than 50% of homes nearby

Year built1980
OlderTypical 1972Newer

Newer than 61% of homes nearby

How 20 Oak St ranks against every home in each area.
MeasureThis homeSt. JamesSaint James 11780Suffolk County
Estimated valuepricier than$988,41583% of homes63% of homes78% of homes
Price per ft²pricier than$3679% of homes10% of homes35% of homes
Living areabigger than2,691 ft²85% of homes69% of homes88% of homes
Lot sizebigger than0.48 ac71% of homes50% of homes73% of homes
Year builtnewer than198071% of homes61% of homes66% of homes

About 20 Oak St

How much is 20 Oak St, Saint James, NY worth?

The TopHap Estimate for 20 Oak St, Saint James, NY is $988,415 as of Aug 30, 2026. The likely range is $906,341 to $1,070,489. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Oak St, Saint James, NY last sell?

20 Oak St, Saint James, NY last sold on Apr 22, 2025 for $870,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 20 Oak St, Saint James, NY?

20 Oak St, Saint James, NY has 4 bedrooms, 2 bathrooms, 2,691 square feet of living space and a 0.48-acre lot.

When was 20 Oak St, Saint James, NY built?

20 Oak St, Saint James, NY was built in 1980, making it 46 years old. It is a colonial home. The building has 2 stories.

What schools serve 20 Oak St, Saint James, NY?

20 Oak St, Saint James, NY is assigned to Smithtown High School East (high), rated A+; Mills Pond Elementary School (elementary), rated A-; Great Hollow Middle School (middle), rated B. All sit in Smithtown Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Oak St, Saint James, NY compare to other homes in Saint James 11780?

Among the 5,598 homes in Saint James 11780, it is worth more than 63% of them ($988,415 against a typical $844,050), its price per square foot is higher than 10% of them ($367 against a typical $453), it is bigger than 69% of them (2,691 ft² against a typical 2,160 ft²), its lot is bigger than 50% of them (0.48 ac against a typical 0.48 ac) and it is newer than 61% of them (1980 against a typical 1972). Measured against all of Suffolk County, it is worth more than 78% 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 Oak St, Saint James, NY?

The 2024 property tax bill for 20 Oak St, Saint James, NY was $16,096. The county assessed it at $6,112.

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