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Triplex (3 Units, Any Combination)Residential
Last sold for $470,000 on Apr 16, 1999

21 LEONARD ST

STAMFORD, CT 06906
3
Beds
3.5
Baths
3,604 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
14
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$470,000 · Apr 16, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,925 (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.$588,530 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$223,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$364,630
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$588,530
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$411,971

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Triplex (3 Units, Any Combination)
CountyWESTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.23
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(5)

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.

M
Dolan SchoolC-
Middle · Grades 6–8 · 0.4 mi
E
Julia A. Stark SchoolC
Elementary · Grades KG–5 · 0.8 mi
H
Stamford High SchoolD
High · Grades 9–12 · 1.0 mi

District: Stamford School District

Neighborhood · ZIP 06906These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.96

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.10,703
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.9,439 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,130
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$130,161
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.51 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 Leonard 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.

  • Bigger than 98% of homes in Belltown
  • Has a smaller lot than 79% of homes in Western Connecticut County
  • Newer than 72% of homes in Belltown

How it measures up in Stamford 06906

The dot is this home. The mark in the middle is the typical home in Stamford 06906.

Living area3,604 ft²
SmallerTypical 1,712 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.23 ac
SmallerTypical 0.19 acBigger

Bigger than 67% of homes nearby

Year built1970
OlderTypical 1956Newer

Newer than 65% of homes nearby

How 21 Leonard St ranks against every home in each area.
MeasureThis homeBelltownStamford 06906Western Connecticut County
Living areabigger than3,604 ft²98% of homes97% of homes85% of homes
Lot sizebigger than0.23 ac55% of homes67% of homes21% of homes
Year builtnewer than197072% of homes65% of homes55% of homes

About 21 Leonard St

When did 21 Leonard St, Stamford, CT last sell?

21 Leonard St, Stamford, CT last sold on Apr 16, 1999 for $470,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Leonard St, Stamford, CT?

21 Leonard St, Stamford, CT has 3 bedrooms, 3.5 bathrooms, 3,604 square feet of living space and a 0.23-acre lot.

When was 21 Leonard St, Stamford, CT built?

21 Leonard St, Stamford, CT was built in 1970, making it 56 years old. The building has 2 stories.

What schools serve 21 Leonard St, Stamford, CT?

21 Leonard St, Stamford, CT is assigned to Dolan School (middle), rated C-; Julia A. Stark School (elementary), rated C; Stamford High School (high), rated D. All sit in Stamford School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Leonard St, Stamford, CT compare to other homes in Stamford 06906?

Among the 2,834 homes in Stamford 06906, it is bigger than 97% of them (3,604 ft² against a typical 1,712 ft²), its lot is bigger than 67% of them (0.23 ac against a typical 0.19 ac) and it is newer than 65% of them (1970 against a typical 1956). 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 Leonard St, Stamford, CT?

The 2025 property tax bill for 21 Leonard St, Stamford, CT was $13,925. The county assessed it at $588,530.

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