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Single Family ResidenceResidential
$130,771$126 / 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 Sep 24, 2026
Last sold for $80,030 on Jan 31, 2017

21 GREEN ST

RENSSELAER, NY 12144
2
Beds
1
Baths
1,040 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.
3,485 ft²
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$131K
$126K low$136K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$80,030 · Jan 31, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,181 (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.$19,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$15,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$19,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$115,476

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.41 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Traditional/Old
CountyRENSSELAER
Lot (acres)The size of the land the home sits on, from county records.0.08
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

Foreclosure Filings(1)

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 · 1.7 mi
M
Rensselaer Junior/Senior High SchoolD+
Middle · Grades 6–12 · 1.7 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 Green 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 less than 97% of homes in Rensselaer County
  • Costs less per square foot than 91% of homes in Rensselaer 12144
  • Smaller than 88% of homes in Rensselaer County
  • Has a smaller lot than 90% of homes in Rensselaer County
  • Older than 80% of homes in Rensselaer 12144

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
$113K$760K

This home is worth more than 4% 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$130,771
CheaperTypical $292,247Pricier

Pricier than 4% of homes nearby

Price per ft²$126
CheaperTypical $211Pricier

Pricier than 9% of homes nearby

Living area1,040 ft²
SmallerTypical 1,542 ft²Bigger

Bigger than 13% of homes nearby

Lot size3,485 ft²
SmallerTypical 0.2 acBigger

Bigger than 12% of homes nearby

Year built1900
OlderTypical 1955Newer

Newer than 20% of homes nearby

How 21 Green St ranks against every home in each area.
MeasureThis homeRensselaer 12144Rensselaer County
Estimated valuepricier than$130,7714% of homes3% of homes
Price per ft²pricier than$1269% of homes10% of homes
Living areabigger than1,040 ft²13% of homes12% of homes
Lot sizebigger than3,485 ft²12% of homes10% of homes
Year builtnewer than190020% of homes21% of homes

About 21 Green St

How much is 21 Green St, Rensselaer, NY worth?

The TopHap Estimate for 21 Green St, Rensselaer, NY is $130,771 as of Sep 24, 2026. The likely range is $125,904 to $135,638. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Green St, Rensselaer, NY last sell?

21 Green St, Rensselaer, NY last sold on Jan 31, 2017 for $80,030, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Green St, Rensselaer, NY?

21 Green St, Rensselaer, NY has 2 bedrooms, 1 bathrooms, 1,040 square feet of living space and a 0.08-acre lot.

When was 21 Green St, Rensselaer, NY built?

21 Green St, Rensselaer, NY was built in 1900, making it 126 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 21 Green St, Rensselaer, NY?

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

How does 21 Green St, Rensselaer, NY compare to other homes in Rensselaer 12144?

Among the 6,575 homes in Rensselaer 12144, it is worth more than 4% of them ($130,771 against a typical $292,247), its price per square foot is higher than 9% of them ($126 against a typical $211), it is bigger than 13% of them (1,040 ft² against a typical 1,542 ft²), its lot is bigger than 12% of them (3,485 ft² against a typical 0.2 ac) and it is newer than 20% of them (1900 against a typical 1955). Measured against all of Rensselaer County, it is worth more than 3% 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 Green St, Rensselaer, NY?

The 2025 property tax bill for 21 Green St, Rensselaer, NY was $3,181. The county assessed it at $19,400.

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