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Single Family ResidenceResidential
$812,993$495 / 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 $477,988 on Sep 25, 2007

6421 KALMIA ST

SPRINGFIELD, VA 22150
6
Beds
3
Baths
1,644 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.
0.53 ac
Lot SizeThe size of the land the home sits on, from county records.
1956
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$813K
$782K low$844K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$477,988 · Sep 25, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,890 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$777,980 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$312,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$465,980
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$681,080
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$777,980

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyFAIRFAX
Lot (acres)The size of the land the home sits on, from county records.0.53
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Buildable
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 500 ft²Porch · 40 ft²

Transaction History(6)

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
Forestdale Elementary SchoolF
Elementary · Grades PK–6 · 0.3 mi
M
Key Middle SchoolD-
Middle · Grades 7–8 · 0.5 mi
H
Lewis High SchoolD+
High · Grades 9–12 · 0.6 mi

District: Fairfax County Public Schools

Neighborhood · ZIP 22150These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.1%
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.28,694
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,687 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,688
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$145,019
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.63%

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

6421 Kalmia 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 84% of homes in Springfield 22150
  • Costs more per square foot than 77% of homes in Springfield 22150
  • Bigger than 66% of homes in Springfield 22150
  • Has a bigger lot than 95% of homes in Springfield 22150
  • Older than 91% of homes in Fairfax County

What homes are worth in Springfield 22150

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

This home
$417K$1.3M

This home is worth more than 84% of homes in Springfield 22150.

How it measures up in Springfield 22150

The dot is this home. The mark in the middle is the typical home in Springfield 22150.

Estimated value$812,993
CheaperTypical $643,902Pricier

Pricier than 84% of homes nearby

Price per ft²$495
CheaperTypical $422Pricier

Pricier than 77% of homes nearby

Living area1,644 ft²
SmallerTypical 1,428 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.53 ac
SmallerTypical 0.24 acBigger

Bigger than 95% of homes nearby

Year built1956
OlderTypical 1959Newer

Newer than 37% of homes nearby

How 6421 Kalmia St ranks against every home in each area.
MeasureThis homeSpringfield 22150Fairfax County
Estimated valuepricier than$812,99384% of homes55% of homes
Price per ft²pricier than$49577% of homes72% of homes
Living areabigger than1,644 ft²66% of homes50% of homes
Lot sizebigger than0.53 ac95% of homes86% of homes
Year builtnewer than195637% of homes9% of homes

About 6421 Kalmia St

How much is 6421 Kalmia St, Springfield, VA worth?

The TopHap Estimate for 6421 Kalmia St, Springfield, VA is $812,993 as of Sep 24, 2026. The likely range is $782,439 to $843,547. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 6421 Kalmia St, Springfield, VA last sell?

6421 Kalmia St, Springfield, VA last sold on Sep 25, 2007 for $477,988, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 6421 Kalmia St, Springfield, VA?

6421 Kalmia St, Springfield, VA has 6 bedrooms, 3 bathrooms, 1,644 square feet of living space and a 0.53-acre lot.

When was 6421 Kalmia St, Springfield, VA built?

6421 Kalmia St, Springfield, VA was built in 1956, making it 70 years old. The building has 1 story.

What schools serve 6421 Kalmia St, Springfield, VA?

6421 Kalmia St, Springfield, VA is assigned to Forestdale Elementary School (elementary), rated F; Key Middle School (middle), rated D-; Lewis High School (high), rated D+. All sit in Fairfax County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 6421 Kalmia St, Springfield, VA compare to other homes in Springfield 22150?

Among the 6,266 homes in Springfield 22150, it is worth more than 84% of them ($812,993 against a typical $643,902), its price per square foot is higher than 77% of them ($495 against a typical $422), it is bigger than 66% of them (1,644 ft² against a typical 1,428 ft²), its lot is bigger than 95% of them (0.53 ac against a typical 0.24 ac) and it is newer than 37% of them (1956 against a typical 1959). Measured against all of Fairfax County, it is worth more than 55% 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 6421 Kalmia St, Springfield, VA?

The 2024 property tax bill for 6421 Kalmia St, Springfield, VA was $7,890. The county assessed it at $777,980.

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