Duplex (2 Units, Any Combination)Residential
Last sold for $46,000 on May 19, 1995
13 DENISON AVE
GROTON, CT 06340
4
Beds
2.5
Baths
2,203 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
Valuation
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$46,000 · May 19, 1995
Tax & Assessment
Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,385 (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.$186,270 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$95,718
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$90,552
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$186,270
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$130,389
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.30
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.
48
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
81
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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountySOUTHEASTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.18
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
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.Elevator
Transaction History(5)
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.
EMH
Charles Barnum Magnet SchoolC
Elementary · Grades PK–5 · 1.4 mi
Groton Middle SchoolC
Middle · Grades 6–8 · 3.4 mi
Robert E. Fitch High SchoolC+
High · Grades 9–12 · 3.6 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%
Owner Tools
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Claim this homeData 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
13 Denison Ave 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 84% of homes in Groton 06340
- Has a smaller lot than 85% of homes in Southeastern Connecticut County
- Older than 92% 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 area2,203 ft²
SmallerTypical 1,416 ft²Bigger
Bigger than 84% of homes nearby
Lot size0.19 ac
SmallerTypical 0.28 acBigger
Bigger than 27% of homes nearby
Year built1900
OlderTypical 1960Newer
Newer than 8% of homes nearby
| Measure | This home | Groton 06340 | Southeastern Connecticut County |
|---|---|---|---|
| Living areabigger than | 2,203 ft² | 84% of homes | 79% of homes |
| Lot sizebigger than | 0.19 ac | 27% of homes | 15% of homes |
| Year builtnewer than | 1900 | 8% of homes | 11% of homes |
About 13 Denison Ave
When did 13 Denison Ave, Groton, CT last sell?
13 Denison Ave, Groton, CT last sold on May 19, 1995 for $46,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.
How big is 13 Denison Ave, Groton, CT?
13 Denison Ave, Groton, CT has 4 bedrooms, 2.5 bathrooms, 2,203 square feet of living space and a 0.18-acre lot.
When was 13 Denison Ave, Groton, CT built?
13 Denison Ave, Groton, CT was built in 1900, making it 126 years old. It is a duplex single home. The building has 2 stories.
What schools serve 13 Denison Ave, Groton, CT?
13 Denison Ave, Groton, CT is assigned to Charles Barnum Magnet School (elementary), rated C; Groton Middle School (middle), rated C; Robert E. Fitch High School (high), rated C+. All sit in Groton School District. Attendance boundaries change — confirm with the district before relying on an assignment.
How does 13 Denison Ave, Groton, CT compare to other homes in Groton 06340?
Among the 7,236 homes in Groton 06340, it is bigger than 84% of them (2,203 ft² against a typical 1,416 ft²), its lot is bigger than 27% of them (0.19 ac against a typical 0.28 ac) and it is newer than 8% of them (1900 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 13 Denison Ave, Groton, CT?
The 2025 property tax bill for 13 Denison Ave, Groton, CT was $5,385. The county assessed it at $186,270.
More homes on Denison Ave
- 53 Denison Ave4 bd · 3.5 ba · 2,004 ft² · Sold $355K · Mar 2024
- 36 Denison Ave$440K3 bd · 2 ba · 1,615 ft² · Sold $224K · Oct 2021
- 32 Denison Ave$374K3 bd · 2 ba · 1,588 ft² · Sold $275K · Jun 2021
- 43 Denison Ave3 bd · 2 ba · 1,531 ft² · Sold $173K · Feb 2017
- 25 Denison Ave$330K3 bd · 1 ba · 1,147 ft² · Sold $93K · May 2010
- 58 Denison Ave5 bd · 3 ba · 2,596 ft² · Sold $75K · Jul 2001
- 17 Denison Ave$304K3 bd · 1 ba · 984 ft² · Sold $65K · Nov 1998
- 63 Denison Ave4 bd · 2 ba · 1,929 ft² · Sold $90K · Jul 1996
- 62 Denison Ave5 bd · 2 ba · 2,188 ft² · Sold Jan 1900
- 49 Denison Ave$314K3 bd · 2 ba · 1,728 ft² · Sold Jan 1900
- 61 Denison Ave$292K4 bd · 2.5 ba · 1,502 ft² · Sold Jan 1900
- 26 Denison Ave5 bd · 2.5 ba · 2,479 ft² · Sold Jan 1900
Closest homes
- 50 Senkow Ave$301K0 ft · 3 bd · 1.5 ba · 1,288 ft² · Sold Jan 1900
- 32 Senkow Ave$294K180 ft · 3 bd · 1 ba · 1,379 ft² · Sold Jan 1900
- 32 Prospect St$1.1M180 ft · 3 bd · 3 ba · 3,138 ft² · Sold $331K · May 2004
- 190 Daniel Brown Dr$536K180 ft · 3 bd · 2 ba · 1,702 ft² · Sold $156K · Apr 1999
- 43 Senkow Ave$315K159 ft · 3 bd · 1 ba · 1,040 ft² · Sold $105K · Nov 1994
- 53 Senkow Ave$352K152 ft · 3 bd · 1 ba · 1,167 ft² · Sold $190K · Nov 2006
- 31 Senkow Ave$350K234 ft · 4 bd · 1.5 ba · 1,654 ft² · Sold $105K · Jun 1998
- 24 Senkow Ave$269K252 ft · 3 bd · 1 ba · 1,064 ft² · Sold $190K · Jun 2008
More homes in Groton 06340
- 94 Poquonnock Rd5 bd · 2 ba · 2,349 ft² · Sold $305K · Oct 2026
- 17 High St$750K3 bd · 1.5 ba · 1,394 ft² · Sold $720K · Oct 2026
- 29 Blueberry Hill Rd$465K4 bd · 1 ba · 1,344 ft² · Sold $465K · Oct 2026
- 51 Virginia Ave$173K1 bd · 1 ba · 775 ft² · Sold $145K · Oct 2026
- 178 Mirra Dr$430K3 bd · 3.5 ba · 1,960 ft² · Sold $430K · Oct 2026
- 141 Briar Hill Rd$635K4 bd · 2.5 ba · 2,464 ft² · Sold $635K · Oct 2026
- 358 Poquonnock Rd5 bd · 2 ba · 1,734 ft² · Sold $405K · Oct 2026
- 13 Miami Ct4 bd · 2 ba · 1,196 ft² · Sold $40K · Oct 2026
- 27 Pine Island Rd$654K1 bd · 1 ba · 1,040 ft² · Sold $400K · Sep 2026
- 102 Brandegee Ave5 bd · 3 ba · 1,976 ft² · Sold $430K · Sep 2026
- 153 Baker Ave3 bd · 2.5 ba · 2,009 ft² · Sold $450K · Sep 2026
- 73 Cobblestone Dr$309K2 bd · 2 ba · 1,150 ft² · Sold $321K · Sep 2026
Assigned schools
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