Skip to content
Skip to content
TopHapOpen in map
Agricultural/Rural (General)Agriculture / Farming
Last sold for $1,100,000 on Mar 24, 2017

3930 BLACK ROCK RD

UPPERCO, MD 21155
1
Baths
1,397 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.
39.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1889
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,100,000 · Mar 24, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,373 (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.$108,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$108,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$106,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$108,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Agricultural/Rural (General)
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.39.45
HeatingThe type of heating system in the home.Radiant
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Fifth District Elementary SchoolA
Elementary · Grades KG–5 · 1.4 mi
H
Hereford High SchoolA+
High · Grades 9–12 · 6.7 mi
M
Hereford Middle SchoolA
Middle · Grades 6–8 · 7.0 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21155These 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.66
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.43

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
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.2,841
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.130 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,439
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,298
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

3930 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.

  • Smaller than 77% of homes in Upperco 21155
  • Among the largest lots in Baltimore County
  • Among the oldest homes in Baltimore County

How it measures up in Upperco 21155

The dot is this home. The mark in the middle is the typical home in Upperco 21155.

Living area1,397 ft²
SmallerTypical 1,980 ft²Bigger

Bigger than 23% of homes nearby

Lot size39.45 ac
SmallerTypical 1.7 acBigger

Bigger than 93% of homes nearby

Year built1889
OlderTypical 1968Newer

Newer than 8% of homes nearby

How 3930 Black Rock Rd ranks against every home in each area.
MeasureThis homeUpperco 21155Baltimore County
Living areabigger than1,397 ft²23% of homes45% of homes
Lot sizebigger than39.45 ac93% of homesalmost all homes
Year builtnewer than18898% of homesalmost no homes

About 3930 Black Rock Rd

When did 3930 Black Rock Rd, Upperco, MD last sell?

3930 Black Rock Rd, Upperco, MD last sold on Mar 24, 2017 for $1,100,000, according to the county's recorded deed.

How big is 3930 Black Rock Rd, Upperco, MD?

3930 Black Rock Rd, Upperco, MD has 1 bathrooms, 1,397 square feet of living space and a 39.45-acre lot.

When was 3930 Black Rock Rd, Upperco, MD built?

3930 Black Rock Rd, Upperco, MD was built in 1889, making it 137 years old. The building has 2 stories.

What schools serve 3930 Black Rock Rd, Upperco, MD?

3930 Black Rock Rd, Upperco, MD is assigned to Fifth District Elementary School (elementary), rated A; Hereford High School (high), rated A+; Hereford Middle School (middle), rated A. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3930 Black Rock Rd, Upperco, MD compare to other homes in Upperco 21155?

Among the 991 homes in Upperco 21155, it is bigger than 23% of them (1,397 ft² against a typical 1,980 ft²), its lot is bigger than 93% of them (39.45 ac against a typical 1.7 ac) and it is newer than 8% of them (1889 against a typical 1968). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 3930 Black Rock Rd, Upperco, MD?

The 2025 property tax bill for 3930 Black Rock Rd, Upperco, MD was $1,373. The county assessed it at $108,300.

Closest homes

More homes in Upperco 21155

Assigned schools

Explore the area

See this home in context

Open 3930 Black Rock Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map