Skip to content
Skip to content
TopHapOpen in map
Apartments (Generic)Residential
Last sold for $535,000 on Dec 8, 2021

821 RIVER ST

TROY, NY 12180
20
Beds
9
Baths
11,034 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.
1910
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$535,000 · Dec 8, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,677 (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.$250,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$242,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$250,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$428,100

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.15 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.Apartments (Generic)
StyleThe architectural style of the home, such as ranch or colonial.Traditional/Old
CountyRENSSELAER
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1980
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
PS 2F
Elementary · Grades PK–5 · 0.5 mi
M
Troy Middle SchoolC-
Middle · Grades 6–8 · 1.6 mi
H
Troy High SchoolC-
High · Grades 9–12 · 1.8 mi

District: Troy City School District

Neighborhood · ZIP 12180These 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.83
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.86%
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.16%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.55,638
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.985 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,443
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,896
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

Owner Tools

Do you own this home?
Claim this home

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

821 River 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.

  • Among the largest homes in North Central
  • Has a smaller lot than 82% of homes in Rensselaer County
  • Newer than 82% of homes in North Central

How it measures up in Troy 12180

The dot is this home. The mark in the middle is the typical home in Troy 12180.

Living area11,034 ft²
SmallerTypical 1,800 ft²Bigger

Bigger than almost all homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 36% of homes nearby

Year built1910
OlderTypical 1939Newer

Newer than 37% of homes nearby

How 821 River St ranks against every home in each area.
MeasureThis homeNorth CentralTroy 12180Rensselaer County
Living areabigger than11,034 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than0.14 ac76% of homes36% of homes18% of homes
Year builtnewer than191082% of homes37% of homes25% of homes

About 821 River St

When did 821 River St, Troy, NY last sell?

821 River St, Troy, NY last sold on Dec 8, 2021 for $535,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 821 River St, Troy, NY?

821 River St, Troy, NY has 20 bedrooms, 9 bathrooms, 11,034 square feet of living space and a 0.14-acre lot.

When was 821 River St, Troy, NY built?

821 River St, Troy, NY was built in 1910, making it 116 years old. It is a traditional/old home. The building has 3 stories.

What schools serve 821 River St, Troy, NY?

821 River St, Troy, NY is assigned to PS 2 (elementary), rated F; Troy Middle School (middle), rated C-; Troy High School (high), rated C-. All sit in Troy City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 821 River St, Troy, NY compare to other homes in Troy 12180?

Among the 13,341 homes in Troy 12180, it is bigger than almost all of them (11,034 ft² against a typical 1,800 ft²), its lot is bigger than 36% of them (0.14 ac against a typical 0.18 ac) and it is newer than 37% of them (1910 against a typical 1939). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 821 River St, Troy, NY?

The 2025 property tax bill for 821 River St, Troy, NY was $11,677. The county assessed it at $250,000.

More homes on River St

Closest homes

More homes in Troy 12180

Assigned schools

Explore the area

See this home in context

Open 821 River St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map