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Single Family ResidenceResidential
$649,785$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 95How 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 $375,000 on Jun 6, 2016

4 MOSBY CT

ROUND HILL, VA 20141
3
Beds
4
Baths
2,674 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.
0.51 ac
Lot SizeThe size of the land the home sits on, from county records.
1965
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$650K
$619K low$681K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$375,000 · Jun 6, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,984 (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.$619,170 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$205,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$413,670
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$572,290
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$619,170

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.44
26
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
22
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
77
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.
16
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.22 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
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.1995
Lot (acres)The size of the land the home sits on, from county records.0.51
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, 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.Patio · 86 ft²Porch · 128 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
Round Hill Elementary SchoolA
Elementary · Grades PK–5 · 0.8 mi
H
Woodgrove High SchoolA
High · Grades 9–12 · 2.7 mi
M
Harmony Middle SchoolA-
Middle · Grades 6–8 · 4.7 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

4 Mosby 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 87% of homes in Round Hill 20141
  • Costs less per square foot than 87% of homes in Loudoun County
  • Smaller than 67% of homes in Round Hill 20141
  • Has a bigger lot than 83% of homes in Loudoun County
  • Older than 96% of 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
$467K$2.1M

This home is worth more than 13% of 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$649,785
CheaperTypical $859,644Pricier

Pricier than 13% of homes nearby

Price per ft²$243
CheaperTypical $276Pricier

Pricier than 30% of homes nearby

Living area2,674 ft²
SmallerTypical 3,298 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.51 ac
SmallerTypical 0.47 acBigger

Bigger than 53% of homes nearby

Year built1965
OlderTypical 2002Newer

Newer than 11% of homes nearby

How 4 Mosby Ct ranks against every home in each area.
MeasureThis homeRound HillRound Hill 20141Loudoun County
Estimated valuepricier than$649,78545% of homes13% of homes31% of homes
Price per ft²pricier than$24321% of homes30% of homes13% of homes
Living areabigger than2,674 ft²64% of homes33% of homes50% of homes
Lot sizebigger than0.51 ac52% of homes53% of homes83% of homes
Year builtnewer than196546% of homes11% of homes4% of homes

About 4 Mosby Ct

How much is 4 Mosby Ct, Round Hill, VA worth?

The TopHap Estimate for 4 Mosby Ct, Round Hill, VA is $649,785 as of Sep 24, 2026. The likely range is $618,515 to $681,055. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4 Mosby Ct, Round Hill, VA last sell?

4 Mosby Ct, Round Hill, VA last sold on Jun 6, 2016 for $375,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 4 Mosby Ct, Round Hill, VA?

4 Mosby Ct, Round Hill, VA has 3 bedrooms, 4 bathrooms, 2,674 square feet of living space and a 0.51-acre lot.

When was 4 Mosby Ct, Round Hill, VA built?

4 Mosby Ct, Round Hill, VA was built in 1965, making it 61 years old. It is a ranch home. The building has 1 story.

What schools serve 4 Mosby Ct, Round Hill, VA?

4 Mosby Ct, Round Hill, VA is assigned to Round Hill Elementary School (elementary), rated A; Woodgrove High School (high), rated A; Harmony Middle School (middle), rated A-. All sit in Loudoun County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4 Mosby Ct, Round Hill, VA compare to other homes in Round Hill 20141?

Among the 2,790 homes in Round Hill 20141, it is worth more than 13% of them ($649,785 against a typical $859,644), its price per square foot is higher than 30% of them ($243 against a typical $276), it is bigger than 33% of them (2,674 ft² against a typical 3,298 ft²), its lot is bigger than 53% of them (0.51 ac against a typical 0.47 ac) and it is newer than 11% of them (1965 against a typical 2002). Measured against all of Loudoun County, it is worth more than 31% 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 4 Mosby Ct, Round Hill, VA?

The 2026 property tax bill for 4 Mosby Ct, Round Hill, VA was $4,984. The county assessed it at $619,170.

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