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Single Family ResidenceResidential
$607,685$487 / 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 96How 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

21 OAK ST

WINDHAM, NH 03087
3
Beds
1
Baths
1,248 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.
1985
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$608K
$582K low$633K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,068 (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.$994,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$838,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$156,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$539,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$598,310

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.119 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Contemporary
CountyROCKINGHAM
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.2004
Lot (acres)The size of the land the home sits on, from county records.0.11
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Baseboard
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)

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

H
Windham High SchoolA
High · Grades 9–12 · 2.5 mi
E
Golden Brook Elementary SchoolA-
Elementary · Grades PK–4 · 2.8 mi
M
Windham Middle SchoolA
Middle · Grades 7–8 · 2.9 mi

District: Windham School District

Neighborhood · ZIP 03087These 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.29
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.16,463
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.592 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$160,247
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$194,371
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

21 Oak 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 80% of homes in Windham 03087
  • Costs more per square foot than 88% of homes in Windham 03087
  • Smaller than 90% of homes in Windham 03087
  • Among the smallest lots in Windham 03087

What homes are worth in Windham 03087

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

This home
$384K$1.8M

This home is worth more than 20% of homes in Windham 03087.

How it measures up in Windham 03087

The dot is this home. The mark in the middle is the typical home in Windham 03087.

Estimated value$607,685
CheaperTypical $804,204Pricier

Pricier than 20% of homes nearby

Price per ft²$487
CheaperTypical $353Pricier

Pricier than 88% of homes nearby

Living area1,248 ft²
SmallerTypical 2,310 ft²Bigger

Bigger than 10% of homes nearby

Lot size0.11 ac
SmallerTypical 1.21 acBigger

Smaller than almost all homes nearby

Year built1985
OlderTypical 1988Newer

Newer than 43% of homes nearby

How 21 Oak St ranks against every home in each area.
MeasureThis homeWindham 03087Rockingham County
Estimated valuepricier than$607,68520% of homes46% of homes
Price per ft²pricier than$48788% of homes83% of homes
Living areabigger than1,248 ft²10% of homes26% of homes
Lot sizebigger than0.11 acalmost no homes9% of homes
Year builtnewer than198543% of homes52% of homes

About 21 Oak St

How much is 21 Oak St, Windham, NH worth?

The TopHap Estimate for 21 Oak St, Windham, NH is $607,685 as of Sep 24, 2026. The likely range is $581,877 to $633,493. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Oak St, Windham, NH last sell?

21 Oak St, Windham, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Oak St, Windham, NH?

21 Oak St, Windham, NH has 3 bedrooms, 1 bathrooms, 1,248 square feet of living space and a 0.11-acre lot.

When was 21 Oak St, Windham, NH built?

21 Oak St, Windham, NH was built in 1985, making it 41 years old. It is a contemporary home. The building has 2 stories.

What schools serve 21 Oak St, Windham, NH?

21 Oak St, Windham, NH is assigned to Windham High School (high), rated A; Golden Brook Elementary School (elementary), rated A-; Windham Middle School (middle), rated A. All sit in Windham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Oak St, Windham, NH compare to other homes in Windham 03087?

Among the 5,677 homes in Windham 03087, it is worth more than 20% of them ($607,685 against a typical $804,204), its price per square foot is higher than 88% of them ($487 against a typical $353), it is bigger than 10% of them (1,248 ft² against a typical 2,310 ft²), its lot is bigger than almost none of them (0.11 ac against a typical 1.21 ac) and it is newer than 43% of them (1985 against a typical 1988). Measured against all of Rockingham County, it is worth more than 46% 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 Oak St, Windham, NH?

The 2025 property tax bill for 21 Oak St, Windham, NH was $14,068. The county assessed it at $994,200.

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