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Single Family ResidenceResidential
$917,770$409 / 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 91How 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

8109 DAYTON ST

LORTON, VA 22079
3
Beds
3 / 1
Baths
2,246 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.
0.64 ac
Lot SizeThe size of the land the home sits on, from county records.
1976
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.
6
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$918K
$832K low$1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,490 (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.$820,940 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$317,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$503,940
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$695,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$820,940

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.0.64
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
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.Patio · 252 ft²Porch · 78 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
Gunston Elementary SchoolB+
Elementary · Grades PK–6 · 1.7 mi
H
South County High SchoolB+
High · Grades 9–12 · 3.7 mi
M
South County Middle SchoolA
Middle · Grades 7–8 · 4.1 mi

District: Fairfax County Public Schools

Neighborhood · ZIP 22079These 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.75
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.38

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.6%
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.36,116
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,051 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,916
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,822
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

8109 Dayton 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 76% of homes in Lorton 22079
  • Costs more per square foot than 76% of homes in Lorton 22079
  • Bigger than 71% of homes in Fairfax County
  • Has a bigger lot than 90% of homes in Fairfax County
  • Older than 84% of homes in Lorton 22079

What homes are worth in Lorton 22079

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

This home
$268K$1.5M

This home is worth more than 76% of homes in Lorton 22079.

How it measures up in Lorton 22079

The dot is this home. The mark in the middle is the typical home in Lorton 22079.

Estimated value$917,770
CheaperTypical $680,693Pricier

Pricier than 76% of homes nearby

Price per ft²$409
CheaperTypical $362Pricier

Pricier than 76% of homes nearby

Living area2,246 ft²
SmallerTypical 1,760 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.64 ac
SmallerTypical 3,703 ft²Bigger

Bigger than 89% of homes nearby

Year built1976
OlderTypical 1995Newer

Newer than 16% of homes nearby

How 8109 Dayton St ranks against every home in each area.
MeasureThis homeLorton 22079Fairfax County
Estimated valuepricier than$917,77076% of homes65% of homes
Price per ft²pricier than$40976% of homes42% of homes
Living areabigger than2,246 ft²65% of homes71% of homes
Lot sizebigger than0.64 ac89% of homes90% of homes
Year builtnewer than197616% of homes39% of homes

About 8109 Dayton St

How much is 8109 Dayton St, Lorton, VA worth?

The TopHap Estimate for 8109 Dayton St, Lorton, VA is $917,770 as of Sep 24, 2026. The likely range is $831,697 to $1,003,843. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 8109 Dayton St, Lorton, VA?

8109 Dayton St, Lorton, VA has 3 bedrooms, 3 bathrooms, 2,246 square feet of living space and a 0.64-acre lot.

When was 8109 Dayton St, Lorton, VA built?

8109 Dayton St, Lorton, VA was built in 1976, making it 50 years old. The building has 1 story.

What schools serve 8109 Dayton St, Lorton, VA?

8109 Dayton St, Lorton, VA is assigned to Gunston Elementary School (elementary), rated B+; South County High School (high), rated B+; South County Middle School (middle), rated A. All sit in Fairfax County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8109 Dayton St, Lorton, VA compare to other homes in Lorton 22079?

Among the 10,268 homes in Lorton 22079, it is worth more than 76% of them ($917,770 against a typical $680,693), its price per square foot is higher than 76% of them ($409 against a typical $362), it is bigger than 65% of them (2,246 ft² against a typical 1,760 ft²), its lot is bigger than 89% of them (0.64 ac against a typical 3,703 ft²) and it is newer than 16% of them (1976 against a typical 1995). Measured against all of Fairfax County, it is worth more than 65% 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 8109 Dayton St, Lorton, VA?

The 2025 property tax bill for 8109 Dayton St, Lorton, VA was $9,490. The county assessed it at $820,940.

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