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Single Family ResidenceResidential
$798,802$286 / 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 Aug 30, 2026
Last sold for $449,000 on Jun 26, 2017

8521 THOMAS DR

MANASSAS, VA 20110
4
Beds
4 / 1
Baths
2,796 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.
0.88 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
Year BuiltThe year the home was originally built, according to county records.
2
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$799K
$768K low$830K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$449,000 · Jun 26, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,083 (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.$799,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$146,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$652,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$812,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$799,100

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
78
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
67
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
29
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyPrince William
Lot (acres)The size of the land the home sits on, from county records.0.88
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
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 · 72 ft²

Transaction History(2)

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
Ellis Elementary SchoolD
Elementary · Grades PK–5 · 1.2 mi
M
Parkside Middle SchoolC-
Middle · Grades 6–8 · 1.6 mi
H
Osbourn Park High SchoolC+
High · Grades 9–12 · 2.1 mi

District: Prince William County Public Schools

Neighborhood · ZIP 20110These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
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.52,324
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,886 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,719
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$139,494
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%

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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

8521 Thomas Dr 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 96% of homes in Manassas 20110
  • Costs less per square foot than 66% of homes in Prince William County
  • Bigger than 91% of homes in Manassas 20110
  • Among the largest lots in Manassas 20110
  • Newer than 89% of homes in Manassas 20110

What homes are worth in Manassas 20110

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

This home
$242K$857K

This home is worth more than 96% of homes in Manassas 20110.

How it measures up in Manassas 20110

The dot is this home. The mark in the middle is the typical home in Manassas 20110.

Estimated value$798,802
CheaperTypical $512,294Pricier

Pricier than 96% of homes nearby

Price per ft²$286
CheaperTypical $304Pricier

Pricier than 36% of homes nearby

Living area2,796 ft²
SmallerTypical 1,480 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.88 ac
SmallerTypical 0.23 acBigger

Bigger than almost all homes nearby

Year built2007
OlderTypical 1986Newer

Newer than 89% of homes nearby

How 8521 Thomas Dr ranks against every home in each area.
MeasureThis homeManassas 20110Prince William County
Estimated valuepricier than$798,80296% of homes79% of homes
Price per ft²pricier than$28636% of homes34% of homes
Living areabigger than2,796 ft²91% of homes79% of homes
Lot sizebigger than0.88 acalmost all homes88% of homes
Year builtnewer than200789% of homes83% of homes

About 8521 Thomas Dr

How much is 8521 Thomas Dr, Manassas, VA worth?

The TopHap Estimate for 8521 Thomas Dr, Manassas, VA is $798,802 as of Aug 30, 2026. The likely range is $767,696 to $829,908. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8521 Thomas Dr, Manassas, VA last sell?

8521 Thomas Dr, Manassas, VA last sold on Jun 26, 2017 for $449,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 8521 Thomas Dr, Manassas, VA?

8521 Thomas Dr, Manassas, VA has 4 bedrooms, 4 bathrooms, 2,796 square feet of living space and a 0.88-acre lot.

When was 8521 Thomas Dr, Manassas, VA built?

8521 Thomas Dr, Manassas, VA was built in 2007, making it 19 years old. The building has 2 stories.

What schools serve 8521 Thomas Dr, Manassas, VA?

8521 Thomas Dr, Manassas, VA is assigned to Ellis Elementary School (elementary), rated D; Parkside Middle School (middle), rated C-; Osbourn Park High School (high), rated C+. All sit in Prince William County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8521 Thomas Dr, Manassas, VA compare to other homes in Manassas 20110?

Among the 13,673 homes in Manassas 20110, it is worth more than 96% of them ($798,802 against a typical $512,294), its price per square foot is higher than 36% of them ($286 against a typical $304), it is bigger than 91% of them (2,796 ft² against a typical 1,480 ft²), its lot is bigger than almost all of them (0.88 ac against a typical 0.23 ac) and it is newer than 89% of them (2007 against a typical 1986). Measured against all of Prince William County, it is worth more than 79% 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 8521 Thomas Dr, Manassas, VA?

The 2024 property tax bill for 8521 Thomas Dr, Manassas, VA was $8,083. The county assessed it at $799,100.

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