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TownhouseResidential
$587,178$481 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $460,250 on Oct 8, 2020

1666 SIERRA WOODS CT

RESTON, VA 20194
3
Beds
3 / 2
Baths
1,220 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.
1,418 ft²
Lot SizeThe size of the land the home sits on, from county records.
1984
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$587K
$567K low$607K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$460,250 · Oct 8, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,610 (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.$549,440 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$150,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$399,440
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$506,970
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$549,440

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
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.0.03
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.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.BalconyPatio · 112 ft²

Transaction History(5)

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 · 1.1 mi
M
Herndon Middle SchoolD
Middle · Grades 7–8 · 1.5 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

1666 Sierra Woods Ct 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 less than 77% of homes in Fairfax County
  • Costs more per square foot than 67% of homes in Reston 20194
  • Smaller than 78% of homes in Fairfax County
  • Has a smaller lot than 95% of homes in Fairfax County
  • Older than 88% 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
$355K$1.8M

This home is worth more than 27% 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$587,178
CheaperTypical $873,083Pricier

Pricier than 27% of homes nearby

Price per ft²$481
CheaperTypical $450Pricier

Pricier than 67% of homes nearby

Living area1,220 ft²
SmallerTypical 1,736 ft²Bigger

Bigger than 27% of homes nearby

Lot size1,418 ft²
SmallerTypical 0.1 acBigger

Bigger than 16% of homes nearby

Year built1984
OlderTypical 1989Newer

Newer than 12% of homes nearby

How 1666 Sierra Woods Ct ranks against every home in each area.
MeasureThis homeReston 20194Fairfax County
Estimated valuepricier than$587,17827% of homes23% of homes
Price per ft²pricier than$48167% of homes67% of homes
Living areabigger than1,220 ft²27% of homes22% of homes
Lot sizebigger than1,418 ft²16% of homes5% of homes
Year builtnewer than198412% of homes57% of homes

About 1666 Sierra Woods Ct

How much is 1666 Sierra Woods Ct, Reston, VA worth?

The TopHap Estimate for 1666 Sierra Woods Ct, Reston, VA is $587,178 as of Jul 14, 2026. The likely range is $567,200 to $607,156. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1666 Sierra Woods Ct, Reston, VA last sell?

1666 Sierra Woods Ct, Reston, VA last sold on Oct 8, 2020 for $460,250, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 1666 Sierra Woods Ct, Reston, VA?

1666 Sierra Woods Ct, Reston, VA has 3 bedrooms, 3 bathrooms, 1,220 square feet of living space and a 0.03-acre lot.

When was 1666 Sierra Woods Ct, Reston, VA built?

1666 Sierra Woods Ct, Reston, VA was built in 1984, making it 42 years old. It is a split level home. The building has 2 stories.

What schools serve 1666 Sierra Woods Ct, Reston, VA?

1666 Sierra Woods Ct, 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 1666 Sierra Woods Ct, Reston, VA compare to other homes in Reston 20194?

Among the 4,696 homes in Reston 20194, it is worth more than 27% of them ($587,178 against a typical $873,083), its price per square foot is higher than 67% of them ($481 against a typical $450), it is bigger than 27% of them (1,220 ft² against a typical 1,736 ft²), its lot is bigger than 16% of them (1,418 ft² against a typical 0.1 ac) and it is newer than 12% of them (1984 against a typical 1989). Measured against all of Fairfax County, it is worth more than 23% 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 1666 Sierra Woods Ct, Reston, VA?

The 2025 property tax bill for 1666 Sierra Woods Ct, Reston, VA was $6,610. The county assessed it at $549,440.

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