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Single Family ResidenceResidential
$435,716$205 / 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 Oct 21, 2026

4309 MARY RIDGE DR

RANDALLSTOWN, MD 21133
4 / 2
Baths
2,124 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$436K
$410K low$461K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,077 (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.$323,600 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$295,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$379,000

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.0.19
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
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 · 244 ft²

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 · 0.8 mi
M
Northwest Academy of Health Sciences SchoolD
Middle · Grades 6–8 · 1.4 mi
H
Randallstown High SchoolD+
High · Grades 9–12 · 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%

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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

4309 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 84% of homes in Randallstown 21133
  • Costs less per square foot than 67% of homes in Baltimore County
  • Bigger than 81% of homes in Randallstown 21133
  • Newer than 72% 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
$245K$660K

This home is worth more than 84% 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$435,716
CheaperTypical $359,060Pricier

Pricier than 84% of homes nearby

Price per ft²$205
CheaperTypical $222Pricier

Pricier than 34% of homes nearby

Living area2,124 ft²
SmallerTypical 1,594 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.19 ac
SmallerTypical 0.2 acBigger

Bigger than 43% of homes nearby

Year built1987
OlderTypical 1972Newer

Newer than 69% of homes nearby

How 4309 Mary Ridge Dr ranks against every home in each area.
MeasureThis homeRandallstown 21133Baltimore County
Estimated valuepricier than$435,71684% of homes67% of homes
Price per ft²pricier than$20534% of homes33% of homes
Living areabigger than2,124 ft²81% of homes77% of homes
Lot sizebigger than0.19 ac43% of homes56% of homes
Year builtnewer than198769% of homes72% of homes

About 4309 Mary Ridge Dr

How much is 4309 Mary Ridge Dr, Randallstown, MD worth?

The TopHap Estimate for 4309 Mary Ridge Dr, Randallstown, MD is $435,716 as of Oct 21, 2026. The likely range is $410,091 to $461,341. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4309 Mary Ridge Dr, Randallstown, MD last sell?

4309 Mary Ridge Dr, Randallstown, MD last sold on Mar 1, 1996, according to the county's recorded deed.

How big is 4309 Mary Ridge Dr, Randallstown, MD?

4309 Mary Ridge Dr, Randallstown, MD has 4 bathrooms, 2,124 square feet of living space and a 0.19-acre lot.

When was 4309 Mary Ridge Dr, Randallstown, MD built?

4309 Mary Ridge Dr, Randallstown, MD was built in 1987, making it 39 years old. It is a conventional home. The building has 2 stories.

What schools serve 4309 Mary Ridge Dr, Randallstown, MD?

4309 Mary Ridge Dr, Randallstown, MD is assigned to Winand Elementary School (elementary), rated B-; Northwest Academy of Health Sciences School (middle), rated D; Randallstown High School (high), rated D+. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4309 Mary Ridge Dr, Randallstown, MD compare to other homes in Randallstown 21133?

Among the 8,727 homes in Randallstown 21133, it is worth more than 84% of them ($435,716 against a typical $359,060), its price per square foot is higher than 34% of them ($205 against a typical $222), it is bigger than 81% of them (2,124 ft² against a typical 1,594 ft²), its lot is bigger than 43% of them (0.19 ac against a typical 0.2 ac) and it is newer than 69% of them (1987 against a typical 1972). Measured against all of Baltimore County, it is worth more than 67% 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 4309 Mary Ridge Dr, Randallstown, MD?

The 2025 property tax bill for 4309 Mary Ridge Dr, Randallstown, MD was $5,077. The county assessed it at $323,600.

More homes on Mary Ridge Dr

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Assigned schools

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