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Single Family ResidenceResidential
$747,921$334 / 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 92How 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 $551,333 on Oct 30, 2015

21 DUMBARTON OAKS

STRATHAM, NH 03885
3
Beds
2.5
Baths
2,241 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.
0.79 ac
Lot SizeThe size of the land the home sits on, from county records.
1984
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$748K
$690K low$806K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$551,333 · Oct 30, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,030 (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.$741,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$397,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$344,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$742,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$730,835

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
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.79
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.Deck

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
Stratham Memorial SchoolA
Elementary · Grades PK–5 · 1.6 mi
M
Cooperative Middle SchoolB+
Middle · Grades 6–8 · 4.9 mi
H
Exeter High SchoolA-
High · Grades 9–12 · 5.6 mi

District: Exeter Regional Cooperative School District

Neighborhood · ZIP 03885These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.102

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
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.7,920
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.506 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,690
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$157,144
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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 Dumbarton Oaks 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 more than 69% of homes in Rockingham County
  • Costs more per square foot than 88% of homes in Stratham 03885
  • Bigger than 68% of homes in Rockingham County
  • Has a smaller lot than 77% of homes in Stratham 03885
  • Older than 69% of homes in Stratham 03885

What homes are worth in Stratham 03885

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

This home
$251K$1.4M

This home is worth more than 53% of homes in Stratham 03885.

How it measures up in Stratham 03885

The dot is this home. The mark in the middle is the typical home in Stratham 03885.

Estimated value$747,921
CheaperTypical $733,162Pricier

Pricier than 53% of homes nearby

Price per ft²$334
CheaperTypical $278Pricier

Pricier than 88% of homes nearby

Living area2,241 ft²
SmallerTypical 2,682 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.79 ac
SmallerTypical 1.14 acBigger

Bigger than 23% of homes nearby

Year built1984
OlderTypical 1988Newer

Newer than 31% of homes nearby

How 21 Dumbarton Oaks ranks against every home in each area.
MeasureThis homeStratham 03885Rockingham County
Estimated valuepricier than$747,92153% of homes69% of homes
Price per ft²pricier than$33488% of homes46% of homes
Living areabigger than2,241 ft²37% of homes68% of homes
Lot sizebigger than0.79 ac23% of homes44% of homes
Year builtnewer than198431% of homes49% of homes

About 21 Dumbarton Oaks

How much is 21 Dumbarton Oaks, Stratham, NH worth?

The TopHap Estimate for 21 Dumbarton Oaks, Stratham, NH is $747,921 as of Sep 24, 2026. The likely range is $690,036 to $805,806. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Dumbarton Oaks, Stratham, NH last sell?

21 Dumbarton Oaks, Stratham, NH last sold on Oct 30, 2015 for $551,333, according to the county's recorded deed.

How big is 21 Dumbarton Oaks, Stratham, NH?

21 Dumbarton Oaks, Stratham, NH has 3 bedrooms, 2.5 bathrooms, 2,241 square feet of living space and a 0.79-acre lot.

When was 21 Dumbarton Oaks, Stratham, NH built?

21 Dumbarton Oaks, Stratham, NH was built in 1984, making it 42 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Dumbarton Oaks, Stratham, NH?

21 Dumbarton Oaks, Stratham, NH is assigned to Stratham Memorial School (elementary), rated A; Cooperative Middle School (middle), rated B+; Exeter High School (high), rated A-. All sit in Exeter Regional Cooperative School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Dumbarton Oaks, Stratham, NH compare to other homes in Stratham 03885?

Among the 3,020 homes in Stratham 03885, it is worth more than 53% of them ($747,921 against a typical $733,162), its price per square foot is higher than 88% of them ($334 against a typical $278), it is bigger than 37% of them (2,241 ft² against a typical 2,682 ft²), its lot is bigger than 23% of them (0.79 ac against a typical 1.14 ac) and it is newer than 31% of them (1984 against a typical 1988). Measured against all of Rockingham County, it is worth more than 69% 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 Dumbarton Oaks, Stratham, NH?

The 2025 property tax bill for 21 Dumbarton Oaks, Stratham, NH was $10,030. The county assessed it at $741,900.

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