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Single Family ResidenceResidential
$697,399$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 94How 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 $218,900 on Nov 13, 1989

7104 BLACK ROCK CT

COLUMBIA, MD 21046
2.5
Baths
2,434 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.
0.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$697K
$656K low$739K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$218,900 · Nov 13, 1989

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,957 (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.$633,667 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$612,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$676,600

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
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
11
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.
81
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
52
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyHOWARD
Lot (acres)The size of the land the home sits on, from county records.0.27
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
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 · 168 ft²Porch · 192 ft²

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

H
Hammond High SchoolB-
High · Grades 9–12 · 0.5 mi
E
Atholton Elementary SchoolA-
Elementary · Grades PK–5 · 0.9 mi
M
Hammond Middle SchoolA-
Middle · Grades 6–8 · 1.9 mi

District: Howard County Public Schools

Neighborhood · ZIP 21046These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.39

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
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.16,201
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,043 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$137,219
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$155,930
Average tempThe average temperature here across a full year.55°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

7104 Black Rock 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 more than 87% of homes in Columbia 21046
  • Costs less per square foot than 65% of homes in Columbia 21046
  • Bigger than 91% of homes in Columbia 21046
  • Newer than 71% of homes in Columbia 21046

What homes are worth in Columbia 21046

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

This home
$253K$837K

This home is worth more than 87% of homes in Columbia 21046.

How it measures up in Columbia 21046

The dot is this home. The mark in the middle is the typical home in Columbia 21046.

Estimated value$697,399
CheaperTypical $511,210Pricier

Pricier than 87% of homes nearby

Price per ft²$287
CheaperTypical $303Pricier

Pricier than 35% of homes nearby

Living area2,434 ft²
SmallerTypical 1,656 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.27 ac
SmallerTypical 0.2 acBigger

Bigger than 64% of homes nearby

Year built1986
OlderTypical 1984Newer

Newer than 71% of homes nearby

How 7104 Black Rock Ct ranks against every home in each area.
MeasureThis homeColumbia 21046Howard County
Estimated valuepricier than$697,39987% of homes60% of homes
Price per ft²pricier than$28735% of homes36% of homes
Living areabigger than2,434 ft²91% of homes66% of homes
Lot sizebigger than0.27 ac64% of homes43% of homes
Year builtnewer than198671% of homes43% of homes

About 7104 Black Rock Ct

How much is 7104 Black Rock Ct, Columbia, MD worth?

The TopHap Estimate for 7104 Black Rock Ct, Columbia, MD is $697,399 as of Sep 24, 2026. The likely range is $655,783 to $739,015. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 7104 Black Rock Ct, Columbia, MD last sell?

7104 Black Rock Ct, Columbia, MD last sold on Nov 13, 1989 for $218,900, according to the county's recorded deed.

How big is 7104 Black Rock Ct, Columbia, MD?

7104 Black Rock Ct, Columbia, MD has 2.5 bathrooms, 2,434 square feet of living space and a 0.27-acre lot.

When was 7104 Black Rock Ct, Columbia, MD built?

7104 Black Rock Ct, Columbia, MD was built in 1986, making it 40 years old. The building has 2 stories.

What schools serve 7104 Black Rock Ct, Columbia, MD?

7104 Black Rock Ct, Columbia, MD is assigned to Hammond High School (high), rated B-; Atholton Elementary School (elementary), rated A-; Hammond Middle School (middle), rated A-. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 7104 Black Rock Ct, Columbia, MD compare to other homes in Columbia 21046?

Among the 5,059 homes in Columbia 21046, it is worth more than 87% of them ($697,399 against a typical $511,210), its price per square foot is higher than 35% of them ($287 against a typical $303), it is bigger than 91% of them (2,434 ft² against a typical 1,656 ft²), its lot is bigger than 64% of them (0.27 ac against a typical 0.2 ac) and it is newer than 71% of them (1986 against a typical 1984). Measured against all of Howard County, it is worth more than 60% 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 7104 Black Rock Ct, Columbia, MD?

The 2026 property tax bill for 7104 Black Rock Ct, Columbia, MD was $8,957. The county assessed it at $633,667.

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