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Single Family ResidenceResidential
$1,524,895$429 / 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 $888,000 on Jun 14, 2018

12126 WALNUT BRANCH RD

RESTON, VA 20194
4
Beds
5 / 1
Baths
3,557 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
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

$1.5M
$1.5M low$1.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$888,000 · Jun 14, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,682 (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.$1,303,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$458,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$845,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,176,140
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,303,600

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 Level
CountyFairfax
Lot (acres)The size of the land the home sits on, from county records.0.35
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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.BalconyDeck · 498 ft²Patio · 498 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.

H
Herndon High SchoolD-
High · Grades 9–12 · 1.2 mi
M
Herndon Middle SchoolD
Middle · Grades 7–8 · 1.4 mi
E
Aldrin Elementary SchoolA
Elementary · Grades KG–6 · 1.6 mi

District: Fairfax County Public Schools

Neighborhood · ZIP 20194These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.34

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.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
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.12,726
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,023 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$171,725
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$194,691
Average tempThe average temperature here across a full year.54°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

12126 Walnut Branch Rd 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 92% of homes in Reston 20194
  • Bigger than 91% of homes in Reston 20194
  • Has a bigger lot than 79% of homes in Reston 20194
  • Newer than 98% of homes in Reston 20194

What homes are worth in Reston 20194

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

This home
$349K$1.8M

This home is worth more than 92% of homes in Reston 20194.

How it measures up in Reston 20194

The dot is this home. The mark in the middle is the typical home in Reston 20194.

Estimated value$1,524,895
CheaperTypical $819,154Pricier

Pricier than 92% of homes nearby

Price per ft²$429
CheaperTypical $446Pricier

Pricier than 40% of homes nearby

Living area3,557 ft²
SmallerTypical 1,736 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.35 ac
SmallerTypical 0.1 acBigger

Bigger than 79% of homes nearby

Year built1999
OlderTypical 1989Newer

Newer than 98% of homes nearby

How 12126 Walnut Branch Rd ranks against every home in each area.
MeasureThis homeReston 20194Fairfax County
Estimated valuepricier than$1,524,89592% of homes92% of homes
Price per ft²pricier than$42940% of homes50% of homes
Living areabigger than3,557 ft²91% of homes91% of homes
Lot sizebigger than0.35 ac79% of homes75% of homes
Year builtnewer than199998% of homes84% of homes

About 12126 Walnut Branch Rd

How much is 12126 Walnut Branch Rd, Reston, VA worth?

The TopHap Estimate for 12126 Walnut Branch Rd, Reston, VA is $1,524,895 as of Aug 30, 2026. The likely range is $1,463,031 to $1,586,759. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12126 Walnut Branch Rd, Reston, VA last sell?

12126 Walnut Branch Rd, Reston, VA last sold on Jun 14, 2018 for $888,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 12126 Walnut Branch Rd, Reston, VA?

12126 Walnut Branch Rd, Reston, VA has 4 bedrooms, 5 bathrooms, 3,557 square feet of living space and a 0.35-acre lot.

When was 12126 Walnut Branch Rd, Reston, VA built?

12126 Walnut Branch Rd, Reston, VA was built in 1999, making it 27 years old. It is a split level home. The building has 2 stories.

What schools serve 12126 Walnut Branch Rd, Reston, VA?

12126 Walnut Branch Rd, Reston, VA is assigned to Herndon High School (high), rated D-; Herndon Middle School (middle), rated D; Aldrin Elementary School (elementary), rated A. All sit in Fairfax County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12126 Walnut Branch Rd, Reston, VA compare to other homes in Reston 20194?

Among the 4,696 homes in Reston 20194, it is worth more than 92% of them ($1,524,895 against a typical $819,154), its price per square foot is higher than 40% of them ($429 against a typical $446), it is bigger than 91% of them (3,557 ft² against a typical 1,736 ft²), its lot is bigger than 79% of them (0.35 ac against a typical 0.1 ac) and it is newer than 98% of them (1999 against a typical 1989). Measured against all of Fairfax County, it is worth more than 92% 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 12126 Walnut Branch Rd, Reston, VA?

The 2025 property tax bill for 12126 Walnut Branch Rd, Reston, VA was $15,682. The county assessed it at $1,303,600.

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