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Single Family ResidenceResidential
$3,958,745$1,229 / 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 92How 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 $745,000 on Apr 14, 1999

20631 UNISON RD

ROUND HILL, VA 20141
2
Beds
4 / 2
Baths
3,222 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.
75.06 ac
Lot SizeThe size of the land the home sits on, from county records.
1800
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

$4M
$3.6M low$4.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$745,000 · Apr 14, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,165 (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.$1,262,710 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$384,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$878,510
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,262,710
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,902,810

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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.Colonial
CountyLoudoun
Lot (acres)The size of the land the home sits on, from county records.75.06
ConstructionThe main material the home's frame and walls are built from.Wood Frame
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.StableShed · 240 ft²Patio · 339 ft²Porch · 424 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Banneker Elementary SchoolA
Elementary · Grades KG–5 · 2.8 mi
M
Blue Ridge Middle SchoolA
Middle · Grades 6–8 · 7.1 mi
H
Loudoun Valley High SchoolA+
High · Grades 9–12 · 8.0 mi

District: Loudoun County Public Schools

Neighborhood · ZIP 20141These 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.74
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.1%
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.7,390
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.267 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$197,779
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$209,024
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

20631 Unison 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.

  • Among the most valuable homes in Round Hill 20141
  • Among the highest price per square foot in Round Hill 20141
  • Bigger than 75% of homes in Loudoun County
  • Among the largest lots in Round Hill 20141
  • Among the oldest homes in Loudoun County

What homes are worth in Round Hill 20141

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

This home
$456K$2.1M

This home is worth more than almost all homes in Round Hill 20141.

How it measures up in Round Hill 20141

The dot is this home. The mark in the middle is the typical home in Round Hill 20141.

Estimated value$3,958,745
CheaperTypical $868,849Pricier

Pricier than almost all homes nearby

Price per ft²$1229
CheaperTypical $335Pricier

Pricier than almost all homes nearby

Living area3,222 ft²
SmallerTypical 2,656 ft²Bigger

Bigger than 69% of homes nearby

Lot size75.06 ac
SmallerTypical 0.47 acBigger

Bigger than almost all homes nearby

Year built1800
OlderTypical 2002Newer

Older than almost all homes nearby

How 20631 Unison Rd ranks against every home in each area.
MeasureThis homeRound Hill 20141Loudoun County
Estimated valuepricier than$3,958,745almost all homesalmost all homes
Price per ft²pricier than$1229almost all homesalmost all homes
Living areabigger than3,222 ft²69% of homes75% of homes
Lot sizebigger than75.06 acalmost all homesalmost all homes
Year builtnewer than1800almost no homesalmost no homes

About 20631 Unison Rd

How much is 20631 Unison Rd, Round Hill, VA worth?

The TopHap Estimate for 20631 Unison Rd, Round Hill, VA is $3,958,745 as of Aug 30, 2026. The likely range is $3,641,209 to $4,276,281. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20631 Unison Rd, Round Hill, VA last sell?

20631 Unison Rd, Round Hill, VA last sold on Apr 14, 1999 for $745,000, according to the county's recorded deed.

How big is 20631 Unison Rd, Round Hill, VA?

20631 Unison Rd, Round Hill, VA has 2 bedrooms, 4 bathrooms, 3,222 square feet of living space and a 75.06-acre lot.

When was 20631 Unison Rd, Round Hill, VA built?

20631 Unison Rd, Round Hill, VA was built in 1800, making it 226 years old. It is a colonial home. The building has 2 stories.

What schools serve 20631 Unison Rd, Round Hill, VA?

20631 Unison Rd, Round Hill, VA is assigned to Banneker Elementary School (elementary), rated A; Blue Ridge Middle School (middle), rated A; Loudoun Valley High School (high), rated A+. All sit in Loudoun County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20631 Unison Rd, Round Hill, VA compare to other homes in Round Hill 20141?

Among the 2,789 homes in Round Hill 20141, it is worth more than almost all of them ($3,958,745 against a typical $868,849), its price per square foot is higher than almost all of them ($1229 against a typical $335), it is bigger than 69% of them (3,222 ft² against a typical 2,656 ft²), its lot is bigger than almost all of them (75.06 ac against a typical 0.47 ac) and it is newer than almost none of them (1800 against a typical 2002). Measured against all of Loudoun County, it is worth more than almost all 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 20631 Unison Rd, Round Hill, VA?

The 2025 property tax bill for 20631 Unison Rd, Round Hill, VA was $10,165. The county assessed it at $1,262,710.

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