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Residential Income (General/Multi-Family)Residential
Last sold for $245,000 on Oct 7, 2021

306 THAMES ST

GROTON, CT 06340
5
Beds
2 / 2
Baths
2,744 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1902
Year BuiltThe year the home was originally built, according to county records.
2
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.$245,000 · Oct 7, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,393 (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.$221,130 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$100,639
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$120,491
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$221,130
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$154,791

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
47
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
78
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
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.Residential Income (General/Multi-Family)
CountySOUTHEASTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.11
HeatingThe type of heating system in the home.Steam
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.

M
Groton Middle SchoolC
Middle · Grades 6–8 · 1.1 mi
H
Robert E. Fitch High SchoolC
High · Grades 9–12 · 1.4 mi
E
Northeast Academy Arts Magnet SchoolB
Elementary · Grades PK–5 · 2.5 mi

District: Groton School District

Neighborhood · ZIP 06340These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.56

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.27,657
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.992 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,998
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$95,942
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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

306 Thames 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 93% of homes in Groton 06340
  • Has a smaller lot than 95% of homes in Southeastern Connecticut County
  • Older than 91% of homes in Groton 06340

How it measures up in Groton 06340

The dot is this home. The mark in the middle is the typical home in Groton 06340.

Living area2,744 ft²
SmallerTypical 1,425 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.11 ac
SmallerTypical 0.28 acBigger

Bigger than 6% of homes nearby

Year built1902
OlderTypical 1960Newer

Newer than 9% of homes nearby

How 306 Thames St ranks against every home in each area.
MeasureThis homeGroton 06340Southeastern Connecticut County
Living areabigger than2,744 ft²93% of homes91% of homes
Lot sizebigger than0.11 ac6% of homes5% of homes
Year builtnewer than19029% of homes11% of homes

About 306 Thames St

When did 306 Thames St, Groton, CT last sell?

306 Thames St, Groton, CT last sold on Oct 7, 2021 for $245,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 306 Thames St, Groton, CT?

306 Thames St, Groton, CT has 5 bedrooms, 2 bathrooms, 2,744 square feet of living space and a 0.11-acre lot.

When was 306 Thames St, Groton, CT built?

306 Thames St, Groton, CT was built in 1902, making it 124 years old. The building has 2 stories.

What schools serve 306 Thames St, Groton, CT?

306 Thames St, Groton, CT is assigned to Groton Middle School (middle), rated C; Robert E. Fitch High School (high), rated C; Northeast Academy Arts Magnet School (elementary), rated B. All sit in Groton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 306 Thames St, Groton, CT compare to other homes in Groton 06340?

Among the 7,236 homes in Groton 06340, it is bigger than 93% of them (2,744 ft² against a typical 1,425 ft²), its lot is bigger than 6% of them (0.11 ac against a typical 0.28 ac) and it is newer than 9% of them (1902 against a typical 1960). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 306 Thames St, Groton, CT?

The 2025 property tax bill for 306 Thames St, Groton, CT was $6,393. The county assessed it at $221,130.

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