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Row HouseResidential
$848,716$572 / 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 $410,000 on Aug 25, 2011

421 Q ST NW

WASHINGTON, DC 20001
3
Beds
2 / 1
Baths
1,484 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.
1,425 ft²
Lot SizeThe size of the land the home sits on, from county records.
1910
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

$849K
$793K low$905K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$410,000 · Aug 25, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,354 (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.$837,340 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$563,160
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$274,180
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$825,420
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$837,340

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.9 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.Row House
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.1988
Lot (acres)The size of the land the home sits on, from county records.0.03
RoofThe main material covering the roof, such as asphalt shingle or tile.Builtup (layered Asphalt)
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

Foreclosure Filings(3)

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

E
Seaton Elementary SchoolB+
Elementary · Grades EE–5 · 0.4 mi
M
Cardozo Education CampusD-
Middle · Grades 7–12 · 0.9 mi

District: District of Columbia Public Schools

Neighborhood · ZIP 20001These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.35

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.49,672
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.23,809 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,237
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,348
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%

Owner Tools

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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

421 Q 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.

  • Worth more than 79% of homes in Washington 20001
  • Costs less per square foot than 81% of homes in Logan Circle / Shaw / U Street
  • Bigger than 74% of homes in Logan Circle / Shaw / U Street
  • Has a bigger lot than 81% of homes in Logan Circle / Shaw / U Street
  • Older than 83% of homes in District of Columbia County

What homes are worth in Washington 20001

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

This home
$281K$1.9M

This home is worth more than 79% of homes in Washington 20001.

How it measures up in Washington 20001

The dot is this home. The mark in the middle is the typical home in Washington 20001.

Estimated value$848,716
CheaperTypical $614,857Pricier

Pricier than 79% of homes nearby

Price per ft²$572
CheaperTypical $606Pricier

Pricier than 39% of homes nearby

Living area1,484 ft²
SmallerTypical 1,098 ft²Bigger

Bigger than 70% of homes nearby

Lot size1,425 ft²
SmallerTypical 784 ft²Bigger

Bigger than 72% of homes nearby

Year built1910
OlderTypical 1924Newer

Newer than 39% of homes nearby

How 421 Q St Nw ranks against every home in each area.
MeasureThis homeLogan Circle / Shaw / U StreetWashington 20001District of Columbia County
Estimated valuepricier than$848,71672% of homes79% of homes72% of homes
Price per ft²pricier than$57219% of homes39% of homes57% of homes
Living areabigger than1,484 ft²74% of homes70% of homes63% of homes
Lot sizebigger than1,425 ft²81% of homes72% of homes46% of homes
Year builtnewer than191039% of homes39% of homes17% of homes

About 421 Q St Nw

How much is 421 Q St Nw, Washington, DC worth?

The TopHap Estimate for 421 Q St Nw, Washington, DC is $848,716 as of Sep 24, 2026. The likely range is $792,802 to $904,630. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Q St Nw, Washington, DC last sell?

421 Q St Nw, Washington, DC last sold on Aug 25, 2011 for $410,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Q St Nw, Washington, DC?

421 Q St Nw, Washington, DC has 3 bedrooms, 2 bathrooms, 1,484 square feet of living space and a 0.03-acre lot.

When was 421 Q St Nw, Washington, DC built?

421 Q St Nw, Washington, DC was built in 1910, making it 116 years old. The building has 2 stories.

What schools serve 421 Q St Nw, Washington, DC?

421 Q St Nw, Washington, DC is assigned to Seaton Elementary School (elementary), rated B+; Cardozo Education Campus (middle), rated D-. All sit in District of Columbia Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Q St Nw, Washington, DC compare to other homes in Washington 20001?

Among the 12,949 homes in Washington 20001, it is worth more than 79% of them ($848,716 against a typical $614,857), its price per square foot is higher than 39% of them ($572 against a typical $606), it is bigger than 70% of them (1,484 ft² against a typical 1,098 ft²), its lot is bigger than 72% of them (1,425 ft² against a typical 784 ft²) and it is newer than 39% of them (1910 against a typical 1924). Measured against all of District of Columbia County, it is worth more than 72% 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 421 Q St Nw, Washington, DC?

The 2025 property tax bill for 421 Q St Nw, Washington, DC was $6,354. The county assessed it at $837,340.

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