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Single Family ResidenceResidential
$416,474$253 / 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 90How 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 $65,000 on Nov 19, 1996

18 SAINT JOHN ST

NORTH HAVEN, CT 06473
3
Beds
1.5
Baths
1,648 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.
0.86 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$416K
$375K low$458K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$65,000 · Nov 19, 1996

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,667 (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.$226,310 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$72,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$153,510
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$167,140
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$323,300

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.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
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.Single Family Residence
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.1983
Lot (acres)The size of the land the home sits on, from county records.0.86
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.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
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.

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 · 0.8 mi
H
North Haven High SchoolA-
High · Grades 9–12 · 1.0 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

18 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.

  • Worth less than 70% of homes in North Haven 06473
  • Costs less per square foot than 71% of homes in North Haven 06473
  • Has a bigger lot than 78% of homes in South Central Connecticut County
  • Older than 89% of homes in North Haven 06473

What homes are worth in North Haven 06473

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

This home
$301K$883K

This home is worth more than 30% 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.

Estimated value$416,474
CheaperTypical $464,463Pricier

Pricier than 30% of homes nearby

Price per ft²$253
CheaperTypical $285Pricier

Pricier than 29% of homes nearby

Living area1,648 ft²
SmallerTypical 1,620 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.86 ac
SmallerTypical 0.56 acBigger

Bigger than 71% of homes nearby

Year built1940
OlderTypical 1962Newer

Newer than 11% of homes nearby

How 18 Saint John St ranks against every home in each area.
MeasureThis homeNorth Haven 06473South Central Connecticut County
Estimated valuepricier than$416,47430% of homes45% of homes
Price per ft²pricier than$25329% of homes30% of homes
Living areabigger than1,648 ft²52% of homes56% of homes
Lot sizebigger than0.86 ac71% of homes78% of homes
Year builtnewer than194011% of homes26% of homes

About 18 Saint John St

How much is 18 Saint John St, North Haven, CT worth?

The TopHap Estimate for 18 Saint John St, North Haven, CT is $416,474 as of Sep 24, 2026. The likely range is $374,839 to $458,109. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Saint John St, North Haven, CT last sell?

18 Saint John St, North Haven, CT last sold on Nov 19, 1996 for $65,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18 Saint John St, North Haven, CT?

18 Saint John St, North Haven, CT has 3 bedrooms, 1.5 bathrooms, 1,648 square feet of living space and a 0.86-acre lot.

When was 18 Saint John St, North Haven, CT built?

18 Saint John St, North Haven, CT was built in 1940, making it 86 years old. It is a colonial home. The building has 2 stories.

What schools serve 18 Saint John St, North Haven, CT?

18 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 18 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 worth more than 30% of them ($416,474 against a typical $464,463), its price per square foot is higher than 29% of them ($253 against a typical $285), it is bigger than 52% of them (1,648 ft² against a typical 1,620 ft²), its lot is bigger than 71% of them (0.86 ac against a typical 0.56 ac) and it is newer than 11% of them (1940 against a typical 1962). Measured against all of South Central Connecticut County, it is worth more than 45% 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 18 Saint John St, North Haven, CT?

The 2025 property tax bill for 18 Saint John St, North Haven, CT was $6,667. The county assessed it at $226,310.

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