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Single Family ResidenceResidential
$1,129,228$368 / 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 93How 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 $576,246 on Sep 12, 2005

42865 SIDNEY PL

ASHBURN, VA 20148
4
Beds
5 / 1
Baths
3,068 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
2005
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.1M
$1.1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$576,246 · Sep 12, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,783 (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.$1,091,110 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$325,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$766,110
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,027,590
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,091,110

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
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
14
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.
82
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.
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.Colonial
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.2007
Lot (acres)The size of the land the home sits on, from county records.0.25
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.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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 329 ft²

Transaction History(1)

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.

M
Eagle Ridge Middle SchoolA+
Middle · Grades 6–8 · 0.2 mi
E
Mill Run Elementary SchoolA+
Elementary · Grades KG–5 · 0.2 mi
H
Briar Woods High SchoolA
High · Grades 9–12 · 1.6 mi

District: Loudoun County Public Schools

Neighborhood · ZIP 20148These 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.20
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 100.38

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.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.5%
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.56,606
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,496 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$194,877
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$227,317
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

42865 Sidney Pl 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 78% of homes in Loudoun County
  • Costs more per square foot than 82% of homes in Ashburn 20148
  • Bigger than 71% of homes in Loudoun County
  • Has a bigger lot than 81% of homes in Ashburn 20148
  • Older than 73% of homes in Ashburn 20148

What homes are worth in Ashburn 20148

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

This home
$375K$1.9M

This home is worth more than 74% of homes in Ashburn 20148.

How it measures up in Ashburn 20148

The dot is this home. The mark in the middle is the typical home in Ashburn 20148.

Estimated value$1,129,228
CheaperTypical $872,539Pricier

Pricier than 74% of homes nearby

Price per ft²$368
CheaperTypical $318Pricier

Pricier than 82% of homes nearby

Living area3,068 ft²
SmallerTypical 2,856 ft²Bigger

Bigger than 61% of homes nearby

Lot size0.25 ac
SmallerTypical 0.11 acBigger

Bigger than 81% of homes nearby

Year built2005
OlderTypical 2012Newer

Newer than 27% of homes nearby

How 42865 Sidney Pl ranks against every home in each area.
MeasureThis homeAshburn 20148Loudoun County
Estimated valuepricier than$1,129,22874% of homes78% of homes
Price per ft²pricier than$36882% of homes70% of homes
Living areabigger than3,068 ft²61% of homes71% of homes
Lot sizebigger than0.25 ac81% of homes67% of homes
Year builtnewer than200527% of homes63% of homes

About 42865 Sidney Pl

How much is 42865 Sidney Pl, Ashburn, VA worth?

The TopHap Estimate for 42865 Sidney Pl, Ashburn, VA is $1,129,228 as of Aug 30, 2026. The likely range is $1,053,535 to $1,204,921. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 42865 Sidney Pl, Ashburn, VA last sell?

42865 Sidney Pl, Ashburn, VA last sold on Sep 12, 2005 for $576,246, according to the county's recorded deed.

How big is 42865 Sidney Pl, Ashburn, VA?

42865 Sidney Pl, Ashburn, VA has 4 bedrooms, 5 bathrooms, 3,068 square feet of living space and a 0.25-acre lot.

When was 42865 Sidney Pl, Ashburn, VA built?

42865 Sidney Pl, Ashburn, VA was built in 2005, making it 21 years old. It is a colonial home. The building has 2 stories.

What schools serve 42865 Sidney Pl, Ashburn, VA?

42865 Sidney Pl, Ashburn, VA is assigned to Eagle Ridge Middle School (middle), rated A+; Mill Run Elementary School (elementary), rated A+; Briar Woods 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 42865 Sidney Pl, Ashburn, VA compare to other homes in Ashburn 20148?

Among the 20,680 homes in Ashburn 20148, it is worth more than 74% of them ($1,129,228 against a typical $872,539), its price per square foot is higher than 82% of them ($368 against a typical $318), it is bigger than 61% of them (3,068 ft² against a typical 2,856 ft²), its lot is bigger than 81% of them (0.25 ac against a typical 0.11 ac) and it is newer than 27% of them (2005 against a typical 2012). Measured against all of Loudoun County, it is worth more than 78% 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 42865 Sidney Pl, Ashburn, VA?

The 2025 property tax bill for 42865 Sidney Pl, Ashburn, VA was $8,783. The county assessed it at $1,091,110.

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