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Single Family ResidenceResidential
$936,890$621 / 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
Last sold for $245,000 on Apr 18, 2001

21 HERBERT ST

ALEXANDRIA, VA 22305
3
Beds
3
Baths
1,508 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.
1,201 ft²
Lot SizeThe size of the land the home sits on, from county records.
1993
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$937K
$898K low$976K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$245,000 · Apr 18, 2001

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,795 (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.$758,464 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$439,481
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$318,983
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$718,511
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$758,464

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.Townhouse
CountyALEXANDRIA CITY
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.1997
Lot (acres)The size of the land the home sits on, from county records.0.03
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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 · 140 ft²Patio · 140 ft²

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

E
Cora Kelly School for Math, Science and TechnologyD
Elementary · Grades KG–5 · 0.2 mi
H
Alexandria City High SchoolD-
High · Grades 9–12 · 1.6 mi
M
George Washington Middle School
Middle · Grades 6–8 · 1.8 mi

District: Alexandria City Public Schools

Neighborhood · ZIP 22305These 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.101
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 100.34

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
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.18,897
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.13,519 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,742
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$145,092
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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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 Herbert 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 more than 69% of homes in Alexandria city County
  • Costs more per square foot than 82% of homes in Alexandria 22305
  • Has a smaller lot than 96% of homes in Potomac West
  • Newer than 91% of homes in Potomac West

What homes are worth in Alexandria 22305

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

This home
$257K$1.9M

This home is worth more than 64% of homes in Alexandria 22305.

How it measures up in Alexandria 22305

The dot is this home. The mark in the middle is the typical home in Alexandria 22305.

Estimated value$936,890
CheaperTypical $830,741Pricier

Pricier than 64% of homes nearby

Price per ft²$621
CheaperTypical $527Pricier

Pricier than 82% of homes nearby

Living area1,508 ft²
SmallerTypical 1,611 ft²Bigger

Bigger than 42% of homes nearby

Lot size1,201 ft²
SmallerTypical 3,006 ft²Bigger

Bigger than 4% of homes nearby

Year built1993
OlderTypical 1949Newer

Newer than 91% of homes nearby

How 21 Herbert St ranks against every home in each area.
MeasureThis homePotomac WestAlexandria 22305Alexandria city County
Estimated valuepricier than$936,89055% of homes64% of homes69% of homes
Price per ft²pricier than$62159% of homes82% of homes79% of homes
Living areabigger than1,508 ft²47% of homes42% of homes55% of homes
Lot sizebigger than1,201 ft²4% of homes4% of homes26% of homes
Year builtnewer than199391% of homes91% of homes73% of homes

About 21 Herbert St

How much is 21 Herbert St, Alexandria, VA worth?

The TopHap Estimate for 21 Herbert St, Alexandria, VA is $936,890 as of Sep 24, 2026. The likely range is $898,205 to $975,575. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Herbert St, Alexandria, VA last sell?

21 Herbert St, Alexandria, VA last sold on Apr 18, 2001 for $245,000, according to the county's recorded deed.

How big is 21 Herbert St, Alexandria, VA?

21 Herbert St, Alexandria, VA has 3 bedrooms, 3 bathrooms, 1,508 square feet of living space and a 0.03-acre lot.

When was 21 Herbert St, Alexandria, VA built?

21 Herbert St, Alexandria, VA was built in 1993, making it 33 years old. It is a townhouse home. The building has 3 stories.

What schools serve 21 Herbert St, Alexandria, VA?

21 Herbert St, Alexandria, VA is assigned to Cora Kelly School for Math, Science and Technology (elementary), rated D; Alexandria City High School (high), rated D-; George Washington Middle School (middle). All sit in Alexandria City Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Herbert St, Alexandria, VA compare to other homes in Alexandria 22305?

Among the 3,417 homes in Alexandria 22305, it is worth more than 64% of them ($936,890 against a typical $830,741), its price per square foot is higher than 82% of them ($621 against a typical $527), it is bigger than 42% of them (1,508 ft² against a typical 1,611 ft²), its lot is bigger than 4% of them (1,201 ft² against a typical 3,006 ft²) and it is newer than 91% of them (1993 against a typical 1949). Measured against all of Alexandria city 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 Herbert St, Alexandria, VA?

The 2025 property tax bill for 21 Herbert St, Alexandria, VA was $8,795. The county assessed it at $758,464.

More homes on Herbert St

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Assigned schools

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