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Single Family ResidenceResidential
$513,553$486 / 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 85How 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 $77,000 on May 22, 1995

421 BAY AVE

PATCHOGUE, NY 11772
2
Beds
1
Baths
1,056 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1944
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$514K
$438K low$589K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$77,000 · May 22, 1995

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,504 (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.$1,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$354,167

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.82 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.79%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.14
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

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Bay Elementary SchoolD+
Elementary · Grades PK–5 · 0.7 mi
M
South Ocean Middle SchoolC
Middle · Grades 6–8 · 0.8 mi
H
Patchogue-Medford High SchoolC+
High · Grades 9–12 · 4.1 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%

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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

421 Bay 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 87% of homes in Suffolk County
  • Costs more per square foot than 78% of homes in Patchogue 11772
  • Smaller than 86% of homes in Suffolk County
  • Has a smaller lot than 95% of homes in East Patchogue
  • Older than 90% 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
$372K$1.2M

This home is worth more than 23% 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$513,553
CheaperTypical $581,952Pricier

Pricier than 23% of homes nearby

Price per ft²$486
CheaperTypical $394Pricier

Pricier than 78% of homes nearby

Living area1,056 ft²
SmallerTypical 1,468 ft²Bigger

Bigger than 21% of homes nearby

Lot size0.14 ac
SmallerTypical 0.24 acBigger

Bigger than 12% of homes nearby

Year built1944
OlderTypical 1958Newer

Newer than 28% of homes nearby

How 421 Bay Ave ranks against every home in each area.
MeasureThis homeEast PatchoguePatchogue 11772Suffolk County
Estimated valuepricier than$513,55314% of homes23% of homes13% of homes
Price per ft²pricier than$48677% of homes78% of homes69% of homes
Living areabigger than1,056 ft²16% of homes21% of homes14% of homes
Lot sizebigger than0.14 ac5% of homes12% of homes13% of homes
Year builtnewer than194422% of homes28% of homes10% of homes

About 421 Bay Ave

How much is 421 Bay Ave, Patchogue, NY worth?

The TopHap Estimate for 421 Bay Ave, Patchogue, NY is $513,553 as of Aug 30, 2026. The likely range is $438,461 to $588,645. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Bay Ave, Patchogue, NY last sell?

421 Bay Ave, Patchogue, NY last sold on May 22, 1995 for $77,000, according to the county's recorded deed.

How big is 421 Bay Ave, Patchogue, NY?

421 Bay Ave, Patchogue, NY has 2 bedrooms, 1 bathrooms, 1,056 square feet of living space and a 0.14-acre lot.

When was 421 Bay Ave, Patchogue, NY built?

421 Bay Ave, Patchogue, NY was built in 1944, making it 82 years old. The building has 1 story.

What schools serve 421 Bay Ave, Patchogue, NY?

421 Bay Ave, Patchogue, NY is assigned to Bay Elementary School (elementary), rated D+; 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 421 Bay Ave, Patchogue, NY compare to other homes in Patchogue 11772?

Among the 13,190 homes in Patchogue 11772, it is worth more than 23% of them ($513,553 against a typical $581,952), its price per square foot is higher than 78% of them ($486 against a typical $394), it is bigger than 21% of them (1,056 ft² against a typical 1,468 ft²), its lot is bigger than 12% of them (0.14 ac against a typical 0.24 ac) and it is newer than 28% of them (1944 against a typical 1958). Measured against all of Suffolk County, it is worth more than 13% 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 421 Bay Ave, Patchogue, NY?

The 2024 property tax bill for 421 Bay Ave, Patchogue, NY was $6,504. The county assessed it at $1,700.

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