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Single Family ResidenceResidential
$493,109$270 / 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 Jul 14, 2026
Last sold for $358,542 on Dec 27, 2021

4221 BLACK ROCK RD

HAMPSTEAD, MD 21074
3
Baths
1,828 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
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

$493K
$470K low$516K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$358,542 · Dec 27, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,598 (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.$419,833 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$401,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$456,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.46
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Baseboard
CoolingThe type of cooling or air conditioning in the home.Yes
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.Deck · 529 ft²Porch · 260 ft²

Transaction History(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

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

E
Spring Garden Elementary SchoolB
Elementary · Grades PK–5 · 0.8 mi
M
Shiloh Middle SchoolB
Middle · Grades 6–8 · 1.0 mi
H
Manchester Valley High SchoolA-
High · Grades 9–12 · 3.9 mi

District: Carroll County Public Schools

Neighborhood · ZIP 21074These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.45

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.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.9%
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.16,114
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.408 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,515
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$132,821
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%

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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

4221 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.

  • Worth more than 71% of homes in Hampstead 21074
  • Costs more per square foot than 65% of homes in Hampstead 21074
  • Older than 75% of homes in Hampstead 21074

What homes are worth in Hampstead 21074

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

This home
$193K$883K

This home is worth more than 71% of homes in Hampstead 21074.

How it measures up in Hampstead 21074

The dot is this home. The mark in the middle is the typical home in Hampstead 21074.

Estimated value$493,109
CheaperTypical $407,101Pricier

Pricier than 71% of homes nearby

Price per ft²$270
CheaperTypical $251Pricier

Pricier than 65% of homes nearby

Living area1,828 ft²
SmallerTypical 1,665 ft²Bigger

Bigger than 59% of homes nearby

Lot size0.46 ac
SmallerTypical 0.59 acBigger

Bigger than 43% of homes nearby

Year built1970
OlderTypical 1985Newer

Newer than 25% of homes nearby

How 4221 Black Rock Rd ranks against every home in each area.
MeasureThis homeHampstead 21074Carroll County
Estimated valuepricier than$493,10971% of homes54% of homes
Price per ft²pricier than$27065% of homes50% of homes
Living areabigger than1,828 ft²59% of homes52% of homes
Lot sizebigger than0.46 ac43% of homes41% of homes
Year builtnewer than197025% of homes25% of homes

About 4221 Black Rock Rd

How much is 4221 Black Rock Rd, Hampstead, MD worth?

The TopHap Estimate for 4221 Black Rock Rd, Hampstead, MD is $493,109 as of Jul 14, 2026. The likely range is $470,475 to $515,743. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4221 Black Rock Rd, Hampstead, MD last sell?

4221 Black Rock Rd, Hampstead, MD last sold on Dec 27, 2021 for $358,542, according to the county's recorded deed. TopHap holds 7 recorded sales for this parcel.

How big is 4221 Black Rock Rd, Hampstead, MD?

4221 Black Rock Rd, Hampstead, MD has 3 bathrooms, 1,828 square feet of living space and a 0.46-acre lot.

When was 4221 Black Rock Rd, Hampstead, MD built?

4221 Black Rock Rd, Hampstead, MD was built in 1970, making it 56 years old. The building has 1 story.

What schools serve 4221 Black Rock Rd, Hampstead, MD?

4221 Black Rock Rd, Hampstead, MD is assigned to Spring Garden Elementary School (elementary), rated B; Shiloh Middle School (middle), rated B; Manchester Valley High School (high), rated A-. All sit in Carroll County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4221 Black Rock Rd, Hampstead, MD compare to other homes in Hampstead 21074?

Among the 5,648 homes in Hampstead 21074, it is worth more than 71% of them ($493,109 against a typical $407,101), its price per square foot is higher than 65% of them ($270 against a typical $251), it is bigger than 59% of them (1,828 ft² against a typical 1,665 ft²), its lot is bigger than 43% of them (0.46 ac against a typical 0.59 ac) and it is newer than 25% of them (1970 against a typical 1985). Measured against all of Carroll County, it is worth more than 54% 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 4221 Black Rock Rd, Hampstead, MD?

The 2025 property tax bill for 4221 Black Rock Rd, Hampstead, MD was $4,598. The county assessed it at $419,833.

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