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Single Family ResidenceResidential
$207,172$142 / 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

21 4TH AVE

RENSSELAER, NY 12144
3
Beds
2
Baths
1,458 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.
0.52 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$207K
$190K low$225K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,643 (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.$33,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$30,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$33,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$196,429

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.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.area not mapped

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
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyRENSSELAER
Lot (acres)The size of the land the home sits on, from county records.0.52
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.No

Transaction History(1)

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
Van Rensselaer Elementary SchoolD+
Elementary · Grades PK–5 · 1.4 mi
M
Rensselaer Junior/Senior High SchoolC+
Middle · Grades 6–12 · 1.4 mi

District: Rensselaer City School District

Neighborhood · ZIP 12144These 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.113
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.57

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.92%
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.13%
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.20,884
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,154 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,823
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,873
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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 4th 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 84% of homes in Rensselaer County
  • Costs less per square foot than 85% of homes in Rensselaer 12144
  • Has a bigger lot than 85% of homes in Rensselaer 12144
  • Newer than 75% of homes in Rensselaer County

What homes are worth in Rensselaer 12144

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

This home
$115K$702K

This home is worth more than 20% of homes in Rensselaer 12144.

How it measures up in Rensselaer 12144

The dot is this home. The mark in the middle is the typical home in Rensselaer 12144.

Estimated value$207,172
CheaperTypical $284,078Pricier

Pricier than 20% of homes nearby

Price per ft²$142
CheaperTypical $205Pricier

Pricier than 15% of homes nearby

Living area1,458 ft²
SmallerTypical 1,536 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.52 ac
SmallerTypical 0.2 acBigger

Bigger than 85% of homes nearby

Year built1987
OlderTypical 1956Newer

Newer than 74% of homes nearby

How 21 4th Ave ranks against every home in each area.
MeasureThis homeRensselaer 12144Rensselaer County
Estimated valuepricier than$207,17220% of homes16% of homes
Price per ft²pricier than$14215% of homes16% of homes
Living areabigger than1,458 ft²45% of homes38% of homes
Lot sizebigger than0.52 ac85% of homes53% of homes
Year builtnewer than198774% of homes75% of homes

About 21 4th Ave

How much is 21 4th Ave, Rensselaer, NY worth?

The TopHap Estimate for 21 4th Ave, Rensselaer, NY is $207,172 as of Aug 30, 2026. The likely range is $189,823 to $224,521. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 4th Ave, Rensselaer, NY last sell?

21 4th Ave, Rensselaer, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 4th Ave, Rensselaer, NY?

21 4th Ave, Rensselaer, NY has 3 bedrooms, 2 bathrooms, 1,458 square feet of living space and a 0.52-acre lot.

When was 21 4th Ave, Rensselaer, NY built?

21 4th Ave, Rensselaer, NY was built in 1987, making it 39 years old. It is a ranch home. The building has 1 story.

What schools serve 21 4th Ave, Rensselaer, NY?

21 4th Ave, Rensselaer, NY is assigned to Van Rensselaer Elementary School (elementary), rated D+; Rensselaer Junior/Senior High School (middle), rated C+. All sit in Rensselaer City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 4th Ave, Rensselaer, NY compare to other homes in Rensselaer 12144?

Among the 6,575 homes in Rensselaer 12144, it is worth more than 20% of them ($207,172 against a typical $284,078), its price per square foot is higher than 15% of them ($142 against a typical $205), it is bigger than 45% of them (1,458 ft² against a typical 1,536 ft²), its lot is bigger than 85% of them (0.52 ac against a typical 0.2 ac) and it is newer than 74% of them (1987 against a typical 1956). Measured against all of Rensselaer County, it is worth more than 16% 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 4th Ave, Rensselaer, NY?

The 2025 property tax bill for 21 4th Ave, Rensselaer, NY was $5,643. The county assessed it at $33,000.

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Assigned schools

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