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Single Family ResidenceResidential
$456,508$315 / 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 Aug 30, 2026

20 PATAPSCO AVE

BALTIMORE, MD 21222
2
Baths
1,449 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.
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.
1909
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

$457K
$432K low$481K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,930 (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.$286,100 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$235,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$336,300

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.0.49
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
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, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.Spa/Hot Tub (Only)
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Boat access

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
Dundalk Elementary SchoolD-
Elementary · Grades PK–5 · 1.2 mi
M
Dundalk Middle SchoolD
Middle · Grades 6–8 · 1.3 mi
H
Dundalk High SchoolF
High · Grades 9–12 · 1.7 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21222These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.21%
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.58,903
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,434 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,807
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,684
Average tempThe average temperature here across a full year.56°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

20 Patapsco Ave 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 98% of homes in Dundalk 21222
  • Costs more per square foot than 98% of homes in Dundalk 21222
  • Bigger than 82% of homes in Dundalk 21222
  • Among the largest lots in Dundalk 21222
  • Among the oldest homes in Dundalk 21222

What homes are worth in Dundalk 21222

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

This home
$110K$455K

This home is worth more than 98% of homes in Dundalk 21222.

How it measures up in Dundalk 21222

The dot is this home. The mark in the middle is the typical home in Dundalk 21222.

Estimated value$456,508
CheaperTypical $202,796Pricier

Pricier than 98% of homes nearby

Price per ft²$315
CheaperTypical $177Pricier

Pricier than 98% of homes nearby

Living area1,449 ft²
SmallerTypical 1,122 ft²Bigger

Bigger than 82% of homes nearby

Lot size0.49 ac
SmallerTypical 3,180 ft²Bigger

Bigger than almost all homes nearby

Year built1909
OlderTypical 1952Newer

Older than almost all homes nearby

How 20 Patapsco Ave ranks against every home in each area.
MeasureThis homeDundalk 21222Baltimore County
Estimated valuepricier than$456,50898% of homes70% of homes
Price per ft²pricier than$31598% of homes88% of homes
Living areabigger than1,449 ft²82% of homes48% of homes
Lot sizebigger than0.49 acalmost all homes82% of homes
Year builtnewer than1909almost no homes2% of homes

About 20 Patapsco Ave

How much is 20 Patapsco Ave, Baltimore, MD worth?

The TopHap Estimate for 20 Patapsco Ave, Baltimore, MD is $456,508 as of Aug 30, 2026. The likely range is $432,242 to $480,774. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Patapsco Ave, Baltimore, MD last sell?

20 Patapsco Ave, Baltimore, MD last sold on Jul 18, 2002, according to the county's recorded deed.

How big is 20 Patapsco Ave, Baltimore, MD?

20 Patapsco Ave, Baltimore, MD has 2 bathrooms, 1,449 square feet of living space and a 0.49-acre lot.

When was 20 Patapsco Ave, Baltimore, MD built?

20 Patapsco Ave, Baltimore, MD was built in 1909, making it 117 years old. It is a conventional home. The building has 2 stories.

What schools serve 20 Patapsco Ave, Baltimore, MD?

20 Patapsco Ave, Baltimore, MD is assigned to Dundalk Elementary School (elementary), rated D-; Dundalk Middle School (middle), rated D; Dundalk High School (high), rated F. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Patapsco Ave, Baltimore, MD compare to other homes in Dundalk 21222?

Among the 18,825 homes in Dundalk 21222, it is worth more than 98% of them ($456,508 against a typical $202,796), its price per square foot is higher than 98% of them ($315 against a typical $177), it is bigger than 82% of them (1,449 ft² against a typical 1,122 ft²), its lot is bigger than almost all of them (0.49 ac against a typical 3,180 ft²) and it is newer than almost none of them (1909 against a typical 1952). Measured against all of Baltimore County, it is worth more than 70% 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 20 Patapsco Ave, Baltimore, MD?

The 2025 property tax bill for 20 Patapsco Ave, Baltimore, MD was $2,930. The county assessed it at $286,100.

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