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Single Family ResidenceResidential
$605,890$345 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $310,000 on Aug 4, 2020

21 FOREST AVE

PORT JEFFERSON STATION, NY 11776
3
Beds
1
Baths
1,756 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1965
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.

Valuation

$606K
$580K low$632K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$310,000 · Aug 4, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,353 (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.$2,900 (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.$2,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$604,167

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.0.24
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
Norwood Avenue Elementary School
Elementary · Grades KG–2 · 0.3 mi
M
John F. Kennedy Middle SchoolB
Middle · Grades 6–8 · 0.9 mi
H
Comsewogue High SchoolB-
High · Grades 9–12 · 1.8 mi

District: Brookhaven-Comsewogue Union Free School District

Neighborhood · ZIP 11776These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.3%
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.23,734
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,454 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,888
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,847
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

21 Forest 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 70% of homes in Suffolk County
  • Costs less per square foot than 75% of homes in Suffolk County

What homes are worth in Port Jefferson Station 11776

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

This home
$320K$1.2M

This home is worth more than 48% of homes in Port Jefferson Station 11776.

How it measures up in Port Jefferson Station 11776

The dot is this home. The mark in the middle is the typical home in Port Jefferson Station 11776.

Estimated value$605,890
CheaperTypical $611,300Pricier

Pricier than 48% of homes nearby

Price per ft²$345
CheaperTypical $358Pricier

Pricier than 44% of homes nearby

Living area1,756 ft²
SmallerTypical 1,736 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.24 ac
SmallerTypical 0.27 acBigger

Bigger than 44% of homes nearby

Year built1965
OlderTypical 1970Newer

Newer than 36% of homes nearby

How 21 Forest Ave ranks against every home in each area.
MeasureThis homePort Jefferson StationPort Jefferson Station 11776Suffolk County
Estimated valuepricier than$605,89058% of homes48% of homes30% of homes
Price per ft²pricier than$34537% of homes44% of homes25% of homes
Living areabigger than1,756 ft²61% of homes52% of homes54% of homes
Lot sizebigger than0.24 ac42% of homes44% of homes39% of homes
Year builtnewer than196557% of homes36% of homes42% of homes

About 21 Forest Ave

How much is 21 Forest Ave, Port Jefferson Station, NY worth?

The TopHap Estimate for 21 Forest Ave, Port Jefferson Station, NY is $605,890 as of Oct 21, 2026. The likely range is $580,158 to $631,621. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Forest Ave, Port Jefferson Station, NY last sell?

21 Forest Ave, Port Jefferson Station, NY last sold on Aug 4, 2020 for $310,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Forest Ave, Port Jefferson Station, NY?

21 Forest Ave, Port Jefferson Station, NY has 3 bedrooms, 1 bathrooms, 1,756 square feet of living space and a 0.24-acre lot.

When was 21 Forest Ave, Port Jefferson Station, NY built?

21 Forest Ave, Port Jefferson Station, NY was built in 1965, making it 61 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Forest Ave, Port Jefferson Station, NY?

21 Forest Ave, Port Jefferson Station, NY is assigned to Norwood Avenue Elementary School (elementary); John F. Kennedy Middle School (middle), rated B; Comsewogue High School (high), rated B-. All sit in Brookhaven-Comsewogue Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Forest Ave, Port Jefferson Station, NY compare to other homes in Port Jefferson Station 11776?

Among the 7,250 homes in Port Jefferson Station 11776, it is worth more than 48% of them ($605,890 against a typical $611,300), its price per square foot is higher than 44% of them ($345 against a typical $358), it is bigger than 52% of them (1,756 ft² against a typical 1,736 ft²), its lot is bigger than 44% of them (0.24 ac against a typical 0.27 ac) and it is newer than 36% of them (1965 against a typical 1970). Measured against all of Suffolk County, it is worth more than 30% 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 21 Forest Ave, Port Jefferson Station, NY?

The 2024 property tax bill for 21 Forest Ave, Port Jefferson Station, NY was $12,353. The county assessed it at $2,900.

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