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Single Family ResidenceResidential
$507,874$429 / 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 88How 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

338 S UNION ST

GUILFORD, CT 06437
3
Beds
3
Baths
1,184 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.
0.47 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$508K
$447K low$568K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,121 (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.$257,530 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$161,140
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$96,390
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$257,530
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$367,900

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.48 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.81%
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.0.2 percent flood zone

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.Raised Ranch
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.1997
Lot (acres)The size of the land the home sits on, from county records.0.47
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
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.

E
Calvin Leete Elementary SchoolA+
Elementary · Grades KG–4 · 0.1 mi
M
Elisabeth C. Adams Middle SchoolA+
Middle · Grades 7–8 · 1.2 mi
H
Guilford High SchoolA-
High · Grades 9–12 · 3.1 mi

District: Guilford School District

Neighborhood · ZIP 06437These 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.56
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 100.59

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.8%
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.21,178
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.429 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,284
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$167,172
Average tempThe average temperature here across a full year.50°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

338 S Union 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 81% of homes in Guilford 06437
  • Costs more per square foot than 93% of homes in South Central Connecticut County
  • Smaller than 85% of homes in Guilford 06437
  • Has a smaller lot than 74% of homes in Guilford 06437
  • Newer than 67% of homes in South Central Connecticut County

What homes are worth in Guilford 06437

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

This home
$237K$2M

This home is worth more than 19% of homes in Guilford 06437.

How it measures up in Guilford 06437

The dot is this home. The mark in the middle is the typical home in Guilford 06437.

Estimated value$507,874
CheaperTypical $672,098Pricier

Pricier than 19% of homes nearby

Price per ft²$429
CheaperTypical $353Pricier

Pricier than 77% of homes nearby

Living area1,184 ft²
SmallerTypical 1,932 ft²Bigger

Bigger than 15% of homes nearby

Lot size0.47 ac
SmallerTypical 0.97 acBigger

Bigger than 26% of homes nearby

Year built1973
OlderTypical 1976Newer

Newer than 44% of homes nearby

How 338 S Union St ranks against every home in each area.
MeasureThis homeGuilford 06437South Central Connecticut County
Estimated valuepricier than$507,87419% of homes65% of homes
Price per ft²pricier than$42977% of homes93% of homes
Living areabigger than1,184 ft²15% of homes26% of homes
Lot sizebigger than0.47 ac26% of homes64% of homes
Year builtnewer than197344% of homes67% of homes

About 338 S Union St

How much is 338 S Union St, Guilford, CT worth?

The TopHap Estimate for 338 S Union St, Guilford, CT is $507,874 as of Sep 24, 2026. The likely range is $447,376 to $568,372. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 338 S Union St, Guilford, CT last sell?

338 S Union St, Guilford, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 338 S Union St, Guilford, CT?

338 S Union St, Guilford, CT has 3 bedrooms, 3 bathrooms, 1,184 square feet of living space and a 0.47-acre lot.

When was 338 S Union St, Guilford, CT built?

338 S Union St, Guilford, CT was built in 1973, making it 53 years old. It is a raised ranch home. The building has 1 story.

What schools serve 338 S Union St, Guilford, CT?

338 S Union St, Guilford, CT is assigned to Calvin Leete Elementary School (elementary), rated A+; Elisabeth C. Adams Middle School (middle), rated A+; Guilford High School (high), rated A-. All sit in Guilford School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 338 S Union St, Guilford, CT compare to other homes in Guilford 06437?

Among the 8,820 homes in Guilford 06437, it is worth more than 19% of them ($507,874 against a typical $672,098), its price per square foot is higher than 77% of them ($429 against a typical $353), it is bigger than 15% of them (1,184 ft² against a typical 1,932 ft²), its lot is bigger than 26% of them (0.47 ac against a typical 0.97 ac) and it is newer than 44% of them (1973 against a typical 1976). Measured against all of South Central Connecticut County, it is worth more than 65% 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 338 S Union St, Guilford, CT?

The 2025 property tax bill for 338 S Union St, Guilford, CT was $7,121. The county assessed it at $257,530.

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