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Single Family ResidenceResidential
$313,041$287 / 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 Aug 30, 2026

21707 BLACK ROCK RD

HAGERSTOWN, MD 21740
1
Baths
1,092 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.
1979
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$313K
$296K low$330K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,130 (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.$273,000 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$231,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$314,800

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.47
35
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
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.
90
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
18
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.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.Split Foyer
CountyWASHINGTON
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.Composition Shingle
HeatingThe type of heating system in the home.Electric
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.Deck · 96 ft²Shed · 800 ft²

Transaction History(2)

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
Greenbriar Elmentary SchoolC
Elementary · Grades PK–5 · 1.9 mi
M
Boonsboro Middle SchoolA-
Middle · Grades 6–8 · 5.0 mi
H
Boonsboro High SchoolA-
High · Grades 9–12 · 5.0 mi

District: Washington County Public Schools

Neighborhood · ZIP 21740These 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.119
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 100.42

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
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.68,247
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.969 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,996
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,333
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

21707 Black Rock 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.

  • Costs more per square foot than 95% of homes in Hagerstown 21740
  • Smaller than 85% of homes in Washington County
  • Has a bigger lot than 81% of homes in Hagerstown 21740

What homes are worth in Hagerstown 21740

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

This home
$118K$645K

This home is worth more than 60% of homes in Hagerstown 21740.

How it measures up in Hagerstown 21740

The dot is this home. The mark in the middle is the typical home in Hagerstown 21740.

Estimated value$313,041
CheaperTypical $285,000Pricier

Pricier than 60% of homes nearby

Price per ft²$287
CheaperTypical $197Pricier

Pricier than 95% of homes nearby

Living area1,092 ft²
SmallerTypical 1,442 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.51 ac
SmallerTypical 0.21 acBigger

Bigger than 81% of homes nearby

Year built1979
OlderTypical 1969Newer

Newer than 59% of homes nearby

How 21707 Black Rock Rd ranks against every home in each area.
MeasureThis homeHagerstown 21740Washington County
Estimated valuepricier than$313,04160% of homes48% of homes
Price per ft²pricier than$28795% of homes90% of homes
Living areabigger than1,092 ft²18% of homes15% of homes
Lot sizebigger than0.51 ac81% of homes63% of homes
Year builtnewer than197959% of homes56% of homes

About 21707 Black Rock Rd

How much is 21707 Black Rock Rd, Hagerstown, MD worth?

The TopHap Estimate for 21707 Black Rock Rd, Hagerstown, MD is $313,041 as of Aug 30, 2026. The likely range is $296,471 to $329,611. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21707 Black Rock Rd, Hagerstown, MD last sell?

21707 Black Rock Rd, Hagerstown, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21707 Black Rock Rd, Hagerstown, MD?

21707 Black Rock Rd, Hagerstown, MD has 1 bathrooms, 1,092 square feet of living space and a 0.51-acre lot.

When was 21707 Black Rock Rd, Hagerstown, MD built?

21707 Black Rock Rd, Hagerstown, MD was built in 1979, making it 47 years old. It is a split foyer home. The building has 1 story.

What schools serve 21707 Black Rock Rd, Hagerstown, MD?

21707 Black Rock Rd, Hagerstown, MD is assigned to Greenbriar Elmentary School (elementary), rated C; Boonsboro Middle School (middle), rated A-; Boonsboro High School (high), rated A-. All sit in Washington County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21707 Black Rock Rd, Hagerstown, MD compare to other homes in Hagerstown 21740?

Among the 19,158 homes in Hagerstown 21740, it is worth more than 60% of them ($313,041 against a typical $285,000), its price per square foot is higher than 95% of them ($287 against a typical $197), it is bigger than 18% of them (1,092 ft² against a typical 1,442 ft²), its lot is bigger than 81% of them (0.51 ac against a typical 0.21 ac) and it is newer than 59% of them (1979 against a typical 1969). Measured against all of Washington County, it is worth more than 48% 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 21707 Black Rock Rd, Hagerstown, MD?

The 2025 property tax bill for 21707 Black Rock Rd, Hagerstown, MD was $2,130. The county assessed it at $273,000.

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