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Single Family ResidenceResidential
$302,969$282 / 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 93How 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 $188,000 on Feb 18, 2005

20 MAHAN ST

NEW LONDON, CT 06320
2
Beds
1.5
Baths
1,073 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$303K
$282K low$324K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$188,000 · Feb 18, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,931 (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.$181,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$73,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$107,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$181,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$126,910

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.
6
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
90
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountySOUTHEASTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.22
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.Spa/Hot Tub (Only)

Transaction History(3)

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
Harbor Elementary School
Elementary · Grades PK–5 · 0.6 mi
M
New London Visual & Performing Arts Magnet SchoolD
Middle · Grades 6–11 · 1.2 mi

District: New London School District

Neighborhood · ZIP 06320These 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.115
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.20%
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.24,649
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,337 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,671
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,460
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

20 Mahan 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 82% of homes in Southeastern Connecticut County
  • Costs more per square foot than 73% of homes in New London 06320
  • Smaller than 81% of homes in New London 06320
  • Has a smaller lot than 82% of homes in Southeastern Connecticut County
  • Newer than 71% of homes in New London 06320

What homes are worth in New London 06320

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

This home
$118K$1.1M

This home is worth more than 39% of homes in New London 06320.

How it measures up in New London 06320

The dot is this home. The mark in the middle is the typical home in New London 06320.

Estimated value$302,969
CheaperTypical $328,160Pricier

Pricier than 39% of homes nearby

Price per ft²$282
CheaperTypical $241Pricier

Pricier than 73% of homes nearby

Living area1,073 ft²
SmallerTypical 1,592 ft²Bigger

Bigger than 19% of homes nearby

Lot size0.22 ac
SmallerTypical 0.15 acBigger

Bigger than 76% of homes nearby

Year built1954
OlderTypical 1929Newer

Newer than 71% of homes nearby

How 20 Mahan St ranks against every home in each area.
MeasureThis homeNew London 06320Southeastern Connecticut County
Estimated valuepricier than$302,96939% of homes18% of homes
Price per ft²pricier than$28273% of homes53% of homes
Living areabigger than1,073 ft²19% of homes19% of homes
Lot sizebigger than0.22 ac76% of homes18% of homes
Year builtnewer than195471% of homes31% of homes

About 20 Mahan St

How much is 20 Mahan St, New London, CT worth?

The TopHap Estimate for 20 Mahan St, New London, CT is $302,969 as of Sep 24, 2026. The likely range is $282,165 to $323,773. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Mahan St, New London, CT last sell?

20 Mahan St, New London, CT last sold on Feb 18, 2005 for $188,000, according to the county's recorded deed.

How big is 20 Mahan St, New London, CT?

20 Mahan St, New London, CT has 2 bedrooms, 1.5 bathrooms, 1,073 square feet of living space and a 0.22-acre lot.

When was 20 Mahan St, New London, CT built?

20 Mahan St, New London, CT was built in 1954, making it 72 years old. It is a ranch home. The building has 1 story.

What schools serve 20 Mahan St, New London, CT?

20 Mahan St, New London, CT is assigned to Harbor Elementary School (elementary); New London Visual & Performing Arts Magnet School (middle), rated D. All sit in New London School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Mahan St, New London, CT compare to other homes in New London 06320?

Among the 5,636 homes in New London 06320, it is worth more than 39% of them ($302,969 against a typical $328,160), its price per square foot is higher than 73% of them ($282 against a typical $241), it is bigger than 19% of them (1,073 ft² against a typical 1,592 ft²), its lot is bigger than 76% of them (0.22 ac against a typical 0.15 ac) and it is newer than 71% of them (1954 against a typical 1929). Measured against all of Southeastern Connecticut County, it is worth more than 18% 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 20 Mahan St, New London, CT?

The 2025 property tax bill for 20 Mahan St, New London, CT was $4,931. The county assessed it at $181,300.

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