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Single Family ResidenceResidential
$4,527,143$1,350 / 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 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $2,900,000 on Oct 24, 2013

3107 DUMBARTON ST NW

WASHINGTON, DC 20007
5
Beds
5 / 1
Baths
3,354 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.
2,700 ft²
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.
3
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$4.5M
$4M low$5.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,900,000 · Oct 24, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$29,756 (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.$3,350,640 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,070,520
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,280,120
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,252,450
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,350,640

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDistrict Of Columbia
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.2019
Lot (acres)The size of the land the home sits on, from county records.0.06
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Porch · 252 ft²

Transaction History(1)

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
Hyde-Addison Elementary SchoolA-
Elementary · Grades EE–5 · 0.2 mi
M
Hardy Middle SchoolA
Middle · Grades 6–8 · 0.6 mi
H
MacArthur High SchoolC+
High · Grades 9–12 · 1.8 mi

District: District of Columbia Public Schools

Neighborhood · ZIP 20007These 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.63
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 100.32

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.31,079
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,506 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$160,193
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$224,111
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.43 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

3107 Dumbarton St Nw 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.

  • Among the most valuable homes in District of Columbia County
  • Among the highest price per square foot in District of Columbia County
  • Bigger than 95% of homes in District of Columbia County
  • Has a bigger lot than 83% of homes in Georgetown
  • Older than 91% of homes in District of Columbia County

What homes are worth in Washington 20007

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

This home
$201K$5.8M

This home is worth more than 96% of homes in Washington 20007.

How it measures up in Washington 20007

The dot is this home. The mark in the middle is the typical home in Washington 20007.

Estimated value$4,527,143
CheaperTypical $1,227,422Pricier

Pricier than 96% of homes nearby

Price per ft²$1350
CheaperTypical $787Pricier

Pricier than 93% of homes nearby

Living area3,354 ft²
SmallerTypical 1,462 ft²Bigger

Bigger than 89% of homes nearby

Lot size2,700 ft²
SmallerTypical 1,568 ft²Bigger

Bigger than 74% of homes nearby

Year built1900
OlderTypical 1938Newer

Newer than 22% of homes nearby

How 3107 Dumbarton St Nw ranks against every home in each area.
MeasureThis homeGeorgetownWashington 20007District of Columbia County
Estimated valuepricier than$4,527,14392% of homes96% of homesalmost all homes
Price per ft²pricier than$135085% of homes93% of homesalmost all homes
Living areabigger than3,354 ft²90% of homes89% of homes95% of homes
Lot sizebigger than2,700 ft²83% of homes74% of homes72% of homes
Year builtnewer than190054% of homes22% of homes9% of homes

About 3107 Dumbarton St Nw

How much is 3107 Dumbarton St Nw, Washington, DC worth?

The TopHap Estimate for 3107 Dumbarton St Nw, Washington, DC is $4,527,143 as of Aug 30, 2026. The likely range is $3,979,097 to $5,075,189. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3107 Dumbarton St Nw, Washington, DC last sell?

3107 Dumbarton St Nw, Washington, DC last sold on Oct 24, 2013 for $2,900,000, according to the county's recorded deed.

How big is 3107 Dumbarton St Nw, Washington, DC?

3107 Dumbarton St Nw, Washington, DC has 5 bedrooms, 5 bathrooms, 3,354 square feet of living space and a 0.06-acre lot.

When was 3107 Dumbarton St Nw, Washington, DC built?

3107 Dumbarton St Nw, Washington, DC was built in 1900, making it 126 years old. The building has 3 stories.

What schools serve 3107 Dumbarton St Nw, Washington, DC?

3107 Dumbarton St Nw, Washington, DC is assigned to Hyde-Addison Elementary School (elementary), rated A-; Hardy Middle School (middle), rated A; MacArthur High School (high), rated C+. All sit in District of Columbia Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3107 Dumbarton St Nw, Washington, DC compare to other homes in Washington 20007?

Among the 9,902 homes in Washington 20007, it is worth more than 96% of them ($4,527,143 against a typical $1,227,422), its price per square foot is higher than 93% of them ($1350 against a typical $787), it is bigger than 89% of them (3,354 ft² against a typical 1,462 ft²), its lot is bigger than 74% of them (2,700 ft² against a typical 1,568 ft²) and it is newer than 22% of them (1900 against a typical 1938). Measured against all of District of Columbia County, it is worth more than almost all 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 3107 Dumbarton St Nw, Washington, DC?

The 2025 property tax bill for 3107 Dumbarton St Nw, Washington, DC was $29,756. The county assessed it at $3,350,640.

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