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Single Family ResidenceResidential
$429,046$209 / 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 Jul 14, 2026

21 DEER RUN

MARLBOROUGH, CT 06447
4
Beds
1.5
Baths
2,052 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.
1.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$429K
$401K low$457K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,591 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$174,630 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$60,830
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$113,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$122,241

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
53
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
97
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
20
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.Colonial
CountyCAPITOL
Lot (acres)The size of the land the home sits on, from county records.1.25
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.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Elmer Thienes-Mary Hall Elementary SchoolA
Elementary · Grades PK–6 · 1.6 mi
M
Rham Middle SchoolB+
Middle · Grades 7–8 · 5.3 mi
H
Rham High SchoolA
High · Grades 9–12 · 5.4 mi

District: Marlborough School District

Neighborhood · ZIP 06447These 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.51
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.6,131
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.261 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$142,593
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$163,914
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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

21 Deer Run 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.

  • Costs less per square foot than 85% of homes in Marlborough 06447
  • Bigger than 71% of homes in Capitol County
  • Has a bigger lot than 84% of homes in Capitol County
  • Older than 67% of homes in Marlborough 06447

What homes are worth in Marlborough 06447

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

This home
$275K$947K

This home is worth more than 42% of homes in Marlborough 06447.

How it measures up in Marlborough 06447

The dot is this home. The mark in the middle is the typical home in Marlborough 06447.

Estimated value$429,046
CheaperTypical $453,838Pricier

Pricier than 42% of homes nearby

Price per ft²$209
CheaperTypical $251Pricier

Pricier than 15% of homes nearby

Living area2,052 ft²
SmallerTypical 1,884 ft²Bigger

Bigger than 57% of homes nearby

Lot size1.25 ac
SmallerTypical 1.4 acBigger

Bigger than 37% of homes nearby

Year built1970
OlderTypical 1977Newer

Newer than 33% of homes nearby

How 21 Deer Run ranks against every home in each area.
MeasureThis homeMarlborough 06447Capitol County
Estimated valuepricier than$429,04642% of homes57% of homes
Price per ft²pricier than$20915% of homes17% of homes
Living areabigger than2,052 ft²57% of homes71% of homes
Lot sizebigger than1.25 ac37% of homes84% of homes
Year builtnewer than197033% of homes58% of homes

About 21 Deer Run

How much is 21 Deer Run, Marlborough, CT worth?

The TopHap Estimate for 21 Deer Run, Marlborough, CT is $429,046 as of Jul 14, 2026. The likely range is $400,974 to $457,118. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Deer Run, Marlborough, CT last sell?

21 Deer Run, Marlborough, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Deer Run, Marlborough, CT?

21 Deer Run, Marlborough, CT has 4 bedrooms, 1.5 bathrooms, 2,052 square feet of living space and a 1.25-acre lot.

When was 21 Deer Run, Marlborough, CT built?

21 Deer Run, Marlborough, CT was built in 1970, making it 56 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Deer Run, Marlborough, CT?

21 Deer Run, Marlborough, CT is assigned to Elmer Thienes-Mary Hall Elementary School (elementary), rated A; Rham Middle School (middle), rated B+; Rham High School (high), rated A. All sit in Marlborough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Deer Run, Marlborough, CT compare to other homes in Marlborough 06447?

Among the 2,332 homes in Marlborough 06447, it is worth more than 42% of them ($429,046 against a typical $453,838), its price per square foot is higher than 15% of them ($209 against a typical $251), it is bigger than 57% of them (2,052 ft² against a typical 1,884 ft²), its lot is bigger than 37% of them (1.25 ac against a typical 1.4 ac) and it is newer than 33% of them (1970 against a typical 1977). Measured against all of Capitol County, it is worth more than 57% 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 21 Deer Run, Marlborough, CT?

The 2024 property tax bill for 21 Deer Run, Marlborough, CT was $6,591. The county assessed it at $174,630.

More homes on Deer Run

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Assigned schools

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