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Single Family ResidenceResidential
$585,982$567 / 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 $362,000 on Jan 16, 2020

9840 FAIRMONT AVE

MANASSAS, VA 20109
3
Beds
3 / 1
Baths
1,034 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$586K
$560K low$612K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$362,000 · Jan 16, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,653 (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.$487,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$140,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$346,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$467,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$487,300

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.35
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
3
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
StyleThe architectural style of the home, such as ranch or colonial.Split Foyer
CountyPrince William
Lot (acres)The size of the land the home sits on, from county records.0.19
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
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 · 240 ft²Patio · 240 ft²

Transaction History(3)

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
Loch Lomond Elementary SchoolC-
Elementary · Grades PK–5 · 0.9 mi
M
Parkside Middle SchoolC-
Middle · Grades 6–8 · 2.0 mi
H
Osbourn Park High SchoolC+
High · Grades 9–12 · 2.6 mi

District: Prince William County Public Schools

Neighborhood · ZIP 20109These 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.136
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.44,389
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,110 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,872
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,871
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

9840 Fairmont Ave 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 85% of homes in Manassas 20109
  • Among the highest price per square foot in Manassas 20109
  • Smaller than 92% of homes in Prince William County
  • Has a bigger lot than 73% of homes in Manassas 20109

What homes are worth in Manassas 20109

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

This home
$245K$801K

This home is worth more than 85% of homes in Manassas 20109.

How it measures up in Manassas 20109

The dot is this home. The mark in the middle is the typical home in Manassas 20109.

Estimated value$585,982
CheaperTypical $456,408Pricier

Pricier than 85% of homes nearby

Price per ft²$567
CheaperTypical $313Pricier

Pricier than almost all homes nearby

Living area1,034 ft²
SmallerTypical 1,365 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.19 ac
SmallerTypical 2,091 ft²Bigger

Bigger than 73% of homes nearby

Year built1987
OlderTypical 1986Newer

Newer than 57% of homes nearby

How 9840 Fairmont Ave ranks against every home in each area.
MeasureThis homeManassas 20109Prince William County
Estimated valuepricier than$585,98285% of homes50% of homes
Price per ft²pricier than$567almost all homesalmost all homes
Living areabigger than1,034 ft²9% of homes8% of homes
Lot sizebigger than0.19 ac73% of homes48% of homes
Year builtnewer than198757% of homes39% of homes

About 9840 Fairmont Ave

How much is 9840 Fairmont Ave, Manassas, VA worth?

The TopHap Estimate for 9840 Fairmont Ave, Manassas, VA is $585,982 as of Aug 30, 2026. The likely range is $559,745 to $612,219. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9840 Fairmont Ave, Manassas, VA last sell?

9840 Fairmont Ave, Manassas, VA last sold on Jan 16, 2020 for $362,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9840 Fairmont Ave, Manassas, VA?

9840 Fairmont Ave, Manassas, VA has 3 bedrooms, 3 bathrooms, 1,034 square feet of living space and a 0.19-acre lot.

When was 9840 Fairmont Ave, Manassas, VA built?

9840 Fairmont Ave, Manassas, VA was built in 1987, making it 39 years old. It is a split foyer home. The building has 1 story.

What schools serve 9840 Fairmont Ave, Manassas, VA?

9840 Fairmont Ave, Manassas, VA is assigned to Loch Lomond Elementary School (elementary), rated C-; 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 9840 Fairmont Ave, Manassas, VA compare to other homes in Manassas 20109?

Among the 8,954 homes in Manassas 20109, it is worth more than 85% of them ($585,982 against a typical $456,408), its price per square foot is higher than almost all of them ($567 against a typical $313), it is bigger than 9% of them (1,034 ft² against a typical 1,365 ft²), its lot is bigger than 73% of them (0.19 ac against a typical 2,091 ft²) and it is newer than 57% of them (1987 against a typical 1986). Measured against all of Prince William County, it is worth more than 50% 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 9840 Fairmont Ave, Manassas, VA?

The 2024 property tax bill for 9840 Fairmont Ave, Manassas, VA was $4,653. The county assessed it at $487,300.

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