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Duplex (2 Units, Any Combination)Residential
Last sold for $280,000 on Dec 18, 2018

21 SAINT JOHN ST

NORTH HAVEN, CT 06473
7
Beds
2
Baths
2,832 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
13
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$280,000 · Dec 18, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,284 (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.$281,190 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$69,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$211,890
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$198,890
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$401,700

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
60
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountySOUTH CENTRAL CONNECTICUT
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.1973
Lot (acres)The size of the land the home sits on, from county records.0.31
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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
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(7)

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
North Haven Middle SchoolB+
Middle · Grades 6–8 · 0.9 mi
H
North Haven High SchoolA-
High · Grades 9–12 · 1.1 mi
E
Clintonville Elementary SchoolA-
Elementary · Grades KG–5 · 1.4 mi

District: North Haven School District

Neighborhood · ZIP 06473These 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.41
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.115
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.63

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
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.24,395
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,149 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$120,970
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$145,024
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.50 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 Saint John 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 91% of homes in North Haven 06473
  • Has a smaller lot than 83% of homes in North Haven 06473
  • Older than 98% of homes in North Haven 06473

How it measures up in North Haven 06473

The dot is this home. The mark in the middle is the typical home in North Haven 06473.

Living area2,832 ft²
SmallerTypical 1,620 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.31 ac
SmallerTypical 0.56 acBigger

Bigger than 17% of homes nearby

Year built1890
OlderTypical 1962Newer

Newer than 2% of homes nearby

How 21 Saint John St ranks against every home in each area.
MeasureThis homeNorth Haven 06473South Central Connecticut County
Living areabigger than2,832 ft²91% of homes89% of homes
Lot sizebigger than0.31 ac17% of homes52% of homes
Year builtnewer than18902% of homes3% of homes

About 21 Saint John St

When did 21 Saint John St, North Haven, CT last sell?

21 Saint John St, North Haven, CT last sold on Dec 18, 2018 for $280,000, according to the county's recorded deed.

How big is 21 Saint John St, North Haven, CT?

21 Saint John St, North Haven, CT has 7 bedrooms, 2 bathrooms, 2,832 square feet of living space and a 0.31-acre lot.

When was 21 Saint John St, North Haven, CT built?

21 Saint John St, North Haven, CT was built in 1890, making it 136 years old. It is a colonial home. The building has 3 stories.

What schools serve 21 Saint John St, North Haven, CT?

21 Saint John St, North Haven, CT is assigned to North Haven Middle School (middle), rated B+; North Haven High School (high), rated A-; Clintonville Elementary School (elementary), rated A-. All sit in North Haven School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Saint John St, North Haven, CT compare to other homes in North Haven 06473?

Among the 8,765 homes in North Haven 06473, it is bigger than 91% of them (2,832 ft² against a typical 1,620 ft²), its lot is bigger than 17% of them (0.31 ac against a typical 0.56 ac) and it is newer than 2% of them (1890 against a typical 1962). 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 Saint John St, North Haven, CT?

The 2025 property tax bill for 21 Saint John St, North Haven, CT was $8,284. The county assessed it at $281,190.

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