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TownhouseResidential
$646,091$243 / 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 Sep 24, 2026
Last sold for $440,000 on Jan 18, 2018

21087 ROTUNDA TER

STERLING, VA 20166
3
Beds
2.5
Baths
2,656 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.
3,049 ft²
Lot SizeThe size of the land the home sits on, from county records.
2000
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.

Valuation

$646K
$629K low$663K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$440,000 · Jan 18, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,313 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$659,950 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$193,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$466,450
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$622,870
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$659,950

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.41
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
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.
80
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
34
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.Townhouse
CountyLOUDOUN
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2005
Lot (acres)The size of the land the home sits on, from county records.0.07
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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, Basement
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.DeckPatio · 260 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
Countryside Elementary SchoolC+
Elementary · Grades KG–5 · 0.8 mi
M
River Bend Middle SchoolB
Middle · Grades 6–8 · 1.7 mi
H
Potomac Falls High SchoolB
High · Grades 9–12 · 2.0 mi

District: Loudoun County Public Schools

Neighborhood · ZIP 20166These 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.85
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 100.42

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
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.18,322
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.838 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,145
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$163,624
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.42 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

21087 Rotunda Ter 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 70% of homes in Loudoun County
  • Costs less per square foot than 87% of homes in Loudoun County
  • Bigger than 78% of homes in Sterling 20166
  • Has a smaller lot than 74% of homes in Loudoun County

What homes are worth in Sterling 20166

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

This home
$382K$1.6M

This home is worth more than 60% of homes in Sterling 20166.

How it measures up in Sterling 20166

The dot is this home. The mark in the middle is the typical home in Sterling 20166.

Estimated value$646,091
CheaperTypical $607,449Pricier

Pricier than 60% of homes nearby

Price per ft²$243
CheaperTypical $289Pricier

Pricier than 14% of homes nearby

Living area2,656 ft²
SmallerTypical 2,132 ft²Bigger

Bigger than 78% of homes nearby

Lot size3,049 ft²
SmallerTypical 2,178 ft²Bigger

Bigger than 71% of homes nearby

Year built2000
OlderTypical 2004Newer

Newer than 40% of homes nearby

How 21087 Rotunda Ter ranks against every home in each area.
MeasureThis homeSterling 20166Loudoun County
Estimated valuepricier than$646,09160% of homes30% of homes
Price per ft²pricier than$24314% of homes13% of homes
Living areabigger than2,656 ft²78% of homes50% of homes
Lot sizebigger than3,049 ft²71% of homes26% of homes
Year builtnewer than200040% of homes44% of homes

About 21087 Rotunda Ter

How much is 21087 Rotunda Ter, Sterling, VA worth?

The TopHap Estimate for 21087 Rotunda Ter, Sterling, VA is $646,091 as of Sep 24, 2026. The likely range is $629,159 to $663,023. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21087 Rotunda Ter, Sterling, VA last sell?

21087 Rotunda Ter, Sterling, VA last sold on Jan 18, 2018 for $440,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21087 Rotunda Ter, Sterling, VA?

21087 Rotunda Ter, Sterling, VA has 3 bedrooms, 2.5 bathrooms, 2,656 square feet of living space and a 0.07-acre lot.

When was 21087 Rotunda Ter, Sterling, VA built?

21087 Rotunda Ter, Sterling, VA was built in 2000, making it 26 years old. It is a townhouse home. The building has 3 stories.

What schools serve 21087 Rotunda Ter, Sterling, VA?

21087 Rotunda Ter, Sterling, VA is assigned to Countryside Elementary School (elementary), rated C+; River Bend Middle School (middle), rated B; Potomac Falls High School (high), rated B. All sit in Loudoun County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21087 Rotunda Ter, Sterling, VA compare to other homes in Sterling 20166?

Among the 3,905 homes in Sterling 20166, it is worth more than 60% of them ($646,091 against a typical $607,449), its price per square foot is higher than 14% of them ($243 against a typical $289), it is bigger than 78% of them (2,656 ft² against a typical 2,132 ft²), its lot is bigger than 71% of them (3,049 ft² against a typical 2,178 ft²) and it is newer than 40% of them (2000 against a typical 2004). Measured against all of Loudoun County, it is worth more than 30% 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 21087 Rotunda Ter, Sterling, VA?

The 2026 property tax bill for 21087 Rotunda Ter, Sterling, VA was $5,313. The county assessed it at $659,950.

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