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Single Family ResidenceResidential
$2,645,414$567 / 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
Last sold for $1,750,000 on Sep 26, 2008

153 NEPTUNE DR

GROTON, CT 06340
4
Beds
5 / 2
Baths
4,663 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.
0.54 ac
Lot SizeThe size of the land the home sits on, from county records.
1964
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2.6M
$2.3M low$3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,750,000 · Sep 26, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$34,820 (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.$1,387,820 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$834,463
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$553,357
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,387,820
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$971,474

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.59 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.92%
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.1 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.Cape Cod
CountySOUTHEASTERN 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.0.55
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.DeckGreenhouse

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.

H
Robert E. Fitch High SchoolC+
High · Grades 9–12 · 1.1 mi
M
Groton Middle SchoolC
Middle · Grades 6–8 · 1.3 mi
E
Mystic River Magnet SchoolC-
Elementary · Grades PK–5 · 1.9 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

153 Neptune Dr 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.

  • Among the most valuable homes in Southeastern Connecticut County
  • Costs more per square foot than 97% of homes in Southeastern Connecticut County
  • Among the largest homes in Groton 06340
  • Has a bigger lot than 84% of homes in Groton 06340

What homes are worth in Groton 06340

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

This home
$191K$2M

This home is worth more than almost all 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.

Estimated value$2,645,414
CheaperTypical $385,579Pricier

Pricier than almost all homes nearby

Price per ft²$567
CheaperTypical $289Pricier

Pricier than 89% of homes nearby

Living area4,663 ft²
SmallerTypical 1,425 ft²Bigger

Bigger than almost all homes nearby

Lot size0.54 ac
SmallerTypical 0.28 acBigger

Bigger than 84% of homes nearby

Year built1964
OlderTypical 1960Newer

Newer than 54% of homes nearby

How 153 Neptune Dr ranks against every home in each area.
MeasureThis homeGroton 06340Southeastern Connecticut County
Estimated valuepricier than$2,645,414almost all homesalmost all homes
Price per ft²pricier than$56789% of homes97% of homes
Living areabigger than4,663 ft²almost all homesalmost all homes
Lot sizebigger than0.54 ac84% of homes52% of homes
Year builtnewer than196454% of homes47% of homes

About 153 Neptune Dr

How much is 153 Neptune Dr, Groton, CT worth?

The TopHap Estimate for 153 Neptune Dr, Groton, CT is $2,645,414 as of Sep 24, 2026. The likely range is $2,317,078 to $2,973,750. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 153 Neptune Dr, Groton, CT last sell?

153 Neptune Dr, Groton, CT last sold on Sep 26, 2008 for $1,750,000, according to the county's recorded deed.

How big is 153 Neptune Dr, Groton, CT?

153 Neptune Dr, Groton, CT has 4 bedrooms, 5 bathrooms, 4,663 square feet of living space and a 0.55-acre lot.

When was 153 Neptune Dr, Groton, CT built?

153 Neptune Dr, Groton, CT was built in 1964, making it 62 years old. It is a cape cod home. The building has 2 stories.

What schools serve 153 Neptune Dr, Groton, CT?

153 Neptune Dr, Groton, CT is assigned to Robert E. Fitch High School (high), rated C+; Groton Middle School (middle), rated C; Mystic River Magnet School (elementary), rated C-. All sit in Groton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 153 Neptune Dr, Groton, CT compare to other homes in Groton 06340?

Among the 7,236 homes in Groton 06340, it is worth more than almost all of them ($2,645,414 against a typical $385,579), its price per square foot is higher than 89% of them ($567 against a typical $289), it is bigger than almost all of them (4,663 ft² against a typical 1,425 ft²), its lot is bigger than 84% of them (0.54 ac against a typical 0.28 ac) and it is newer than 54% of them (1964 against a typical 1960). Measured against all of Southeastern Connecticut County, it is worth more than almost all 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 153 Neptune Dr, Groton, CT?

The 2025 property tax bill for 153 Neptune Dr, Groton, CT was $34,820. The county assessed it at $1,387,820.

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