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Single Family ResidenceResidential
$1,020,786$403 / 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 83How 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 $630,000 on Mar 30, 2016

4100 18TH ST S

ARLINGTON, VA 22204
3
Beds
2.5
Baths
2,530 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1M
$847K low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$630,000 · Mar 30, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,999 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,044,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$679,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$365,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,036,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,044,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyARLINGTON
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.1994
Lot (acres)The size of the land the home sits on, from county records.0.24
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 64 ft²Porch · 692 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.

Foreclosure Filings(4)

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

E
Randolph Elementary SchoolD+
Elementary · Grades PK–5 · 0.4 mi
H
Wakefield High SchoolC-
High · Grades 9–12 · 0.8 mi
M
Jefferson Middle SchoolC
Middle · Grades 6–8 · 1.3 mi

District: Arlington County Public Schools

Neighborhood · ZIP 22204These 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.78
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 100.37

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.9.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.54,941
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11,432 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,306
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,015
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.42 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

4100 18th St S 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 87% of homes in Arlington 22204
  • Costs more per square foot than 73% of homes in Arlington 22204
  • Bigger than 69% of homes in Arlington 22204
  • Has a bigger lot than 87% of homes in Douglas Park
  • Newer than 81% of homes in Douglas Park

What homes are worth in Arlington 22204

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

This home
$185K$1.4M

This home is worth more than 87% of homes in Arlington 22204.

How it measures up in Arlington 22204

The dot is this home. The mark in the middle is the typical home in Arlington 22204.

Estimated value$1,020,786
CheaperTypical $640,385Pricier

Pricier than 87% of homes nearby

Price per ft²$403
CheaperTypical $340Pricier

Pricier than 73% of homes nearby

Living area2,530 ft²
SmallerTypical 1,739 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.25 ac
SmallerTypical 0.14 acBigger

Bigger than 82% of homes nearby

Year built1980
OlderTypical 1964Newer

Newer than 76% of homes nearby

How 4100 18th St S ranks against every home in each area.
MeasureThis homeDouglas ParkArlington 22204Arlington County
Estimated valuepricier than$1,020,78685% of homes87% of homes60% of homes
Price per ft²pricier than$40358% of homes73% of homes51% of homes
Living areabigger than2,530 ft²54% of homes69% of homes59% of homes
Lot sizebigger than0.25 ac87% of homes82% of homes70% of homes
Year builtnewer than198081% of homes76% of homes62% of homes

About 4100 18th St S

How much is 4100 18th St S, Arlington, VA worth?

The TopHap Estimate for 4100 18th St S, Arlington, VA is $1,020,786 as of Sep 24, 2026. The likely range is $847,326 to $1,194,246. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4100 18th St S, Arlington, VA last sell?

4100 18th St S, Arlington, VA last sold on Mar 30, 2016 for $630,000, according to the county's recorded deed.

How big is 4100 18th St S, Arlington, VA?

4100 18th St S, Arlington, VA has 3 bedrooms, 2.5 bathrooms, 2,530 square feet of living space and a 0.24-acre lot.

When was 4100 18th St S, Arlington, VA built?

4100 18th St S, Arlington, VA was built in 1980, making it 46 years old. The building has 2 stories.

What schools serve 4100 18th St S, Arlington, VA?

4100 18th St S, Arlington, VA is assigned to Randolph Elementary School (elementary), rated D+; Wakefield High School (high), rated C-; Jefferson Middle School (middle), rated C. All sit in Arlington County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4100 18th St S, Arlington, VA compare to other homes in Arlington 22204?

Among the 12,069 homes in Arlington 22204, it is worth more than 87% of them ($1,020,786 against a typical $640,385), its price per square foot is higher than 73% of them ($403 against a typical $340), it is bigger than 69% of them (2,530 ft² against a typical 1,739 ft²), its lot is bigger than 82% of them (0.25 ac against a typical 0.14 ac) and it is newer than 76% of them (1980 against a typical 1964). Measured against all of Arlington County, it is worth more than 60% 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 4100 18th St S, Arlington, VA?

The 2026 property tax bill for 4100 18th St S, Arlington, VA was $10,999. The county assessed it at $1,044,500.

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