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Single Family ResidenceResidential
$450,245$223 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $325,000 on Dec 21, 2020

4231 MARY RIDGE DR

RANDALLSTOWN, MD 21133
3 / 1
Baths
2,016 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
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

$450K
$435K low$465K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$325,000 · Dec 21, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,947 (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.$332,433 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$302,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$391,700

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.Conventional
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.23
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 · 120 ft²Porch · 80 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.

E
Winand Elementary SchoolB-
Elementary · Grades PK–5 · 1.0 mi
H
Randallstown High SchoolD+
High · Grades 9–12 · 1.2 mi
M
Northwest Academy of Health Sciences SchoolD
Middle · Grades 6–8 · 1.6 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21133These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.27,963
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,709 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$90,976
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$111,908
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Owner Tools

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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

4231 Mary Ridge Dr 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 Randallstown 21133
  • Bigger than 77% of homes in Randallstown 21133
  • Has a bigger lot than 67% of homes in Baltimore County

What homes are worth in Randallstown 21133

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

This home
$250K$686K

This home is worth more than 87% of homes in Randallstown 21133.

How it measures up in Randallstown 21133

The dot is this home. The mark in the middle is the typical home in Randallstown 21133.

Estimated value$450,245
CheaperTypical $360,297Pricier

Pricier than 87% of homes nearby

Price per ft²$223
CheaperTypical $223Pricier

Pricier than 51% of homes nearby

Living area2,016 ft²
SmallerTypical 1,580 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.23 ac
SmallerTypical 0.2 acBigger

Bigger than 66% of homes nearby

Year built1980
OlderTypical 1972Newer

Newer than 60% of homes nearby

How 4231 Mary Ridge Dr ranks against every home in each area.
MeasureThis homeRandallstown 21133Baltimore County
Estimated valuepricier than$450,24587% of homes69% of homes
Price per ft²pricier than$22351% of homes46% of homes
Living areabigger than2,016 ft²77% of homes74% of homes
Lot sizebigger than0.23 ac66% of homes67% of homes
Year builtnewer than198060% of homes64% of homes

About 4231 Mary Ridge Dr

How much is 4231 Mary Ridge Dr, Randallstown, MD worth?

The TopHap Estimate for 4231 Mary Ridge Dr, Randallstown, MD is $450,245 as of Oct 21, 2026. The likely range is $435,009 to $465,481. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4231 Mary Ridge Dr, Randallstown, MD last sell?

4231 Mary Ridge Dr, Randallstown, MD last sold on Dec 21, 2020 for $325,000, according to the county's recorded deed.

How big is 4231 Mary Ridge Dr, Randallstown, MD?

4231 Mary Ridge Dr, Randallstown, MD has 3 bathrooms, 2,016 square feet of living space and a 0.23-acre lot.

When was 4231 Mary Ridge Dr, Randallstown, MD built?

4231 Mary Ridge Dr, Randallstown, MD was built in 1980, making it 46 years old. It is a conventional home. The building has 2 stories.

What schools serve 4231 Mary Ridge Dr, Randallstown, MD?

4231 Mary Ridge Dr, Randallstown, MD is assigned to Winand Elementary School (elementary), rated B-; Randallstown High School (high), rated D+; Northwest Academy of Health Sciences School (middle), rated D. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4231 Mary Ridge Dr, Randallstown, MD compare to other homes in Randallstown 21133?

Among the 8,728 homes in Randallstown 21133, it is worth more than 87% of them ($450,245 against a typical $360,297), its price per square foot is higher than 51% of them ($223 against a typical $223), it is bigger than 77% of them (2,016 ft² against a typical 1,580 ft²), its lot is bigger than 66% of them (0.23 ac against a typical 0.2 ac) and it is newer than 60% of them (1980 against a typical 1972). Measured against all of Baltimore County, it is worth more than 69% 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 4231 Mary Ridge Dr, Randallstown, MD?

The 2025 property tax bill for 4231 Mary Ridge Dr, Randallstown, MD was $4,947. The county assessed it at $332,433.

More homes on Mary Ridge Dr

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Assigned schools

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