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TownhouseResidential
$415,107$186 / 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 91How 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 $359,990 on Jul 10, 2020

551 KATHERINE AVE

BALTIMORE, MD 21221
4 / 2
Baths
2,231 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
2020
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$415K
$379K low$452K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$359,990 · Jul 10, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,923 (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.$404,400 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$373,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$435,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.11
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Built-in
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 · 220 ft²

Transaction History(3)

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.

H
Chesapeake High SchoolD+
High · Grades 9–12 · 0.6 mi
E
Middleborough Elementary SchoolB
Elementary · Grades PK–5 · 0.7 mi
M
Deep Creek Middle SchoolC-
Middle · Grades 6–8 · 1.7 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21221These 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.123
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 100.44

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
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.42,396
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,898 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,330
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,410
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

551 Katherine 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 81% of homes in Essex 21221
  • Costs less per square foot than 80% of homes in Baltimore County
  • Bigger than 90% of homes in Essex 21221
  • Has a smaller lot than 69% of homes in Essex 21221
  • Newer than 98% of homes in Baltimore County

What homes are worth in Essex 21221

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

This home
$140K$697K

This home is worth more than 81% of homes in Essex 21221.

How it measures up in Essex 21221

The dot is this home. The mark in the middle is the typical home in Essex 21221.

Estimated value$415,107
CheaperTypical $286,679Pricier

Pricier than 81% of homes nearby

Price per ft²$186
CheaperTypical $208Pricier

Pricier than 30% of homes nearby

Living area2,231 ft²
SmallerTypical 1,245 ft²Bigger

Bigger than 90% of homes nearby

Lot size0.11 ac
SmallerTypical 0.16 acBigger

Bigger than 31% of homes nearby

Year built2020
OlderTypical 1957Newer

Newer than 96% of homes nearby

How 551 Katherine Ave ranks against every home in each area.
MeasureThis homeEssex 21221Baltimore County
Estimated valuepricier than$415,10781% of homes63% of homes
Price per ft²pricier than$18630% of homes20% of homes
Living areabigger than2,231 ft²90% of homes80% of homes
Lot sizebigger than0.11 ac31% of homes33% of homes
Year builtnewer than202096% of homes98% of homes

About 551 Katherine Ave

How much is 551 Katherine Ave, Baltimore, MD worth?

The TopHap Estimate for 551 Katherine Ave, Baltimore, MD is $415,107 as of Sep 24, 2026. The likely range is $378,576 to $451,638. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 551 Katherine Ave, Baltimore, MD last sell?

551 Katherine Ave, Baltimore, MD last sold on Jul 10, 2020 for $359,990, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 551 Katherine Ave, Baltimore, MD?

551 Katherine Ave, Baltimore, MD has 4 bathrooms, 2,231 square feet of living space and a 0.11-acre lot.

When was 551 Katherine Ave, Baltimore, MD built?

551 Katherine Ave, Baltimore, MD was built in 2020, making it 6 years old. The building has 3 stories.

What schools serve 551 Katherine Ave, Baltimore, MD?

551 Katherine Ave, Baltimore, MD is assigned to Chesapeake High School (high), rated D+; Middleborough Elementary School (elementary), rated B; Deep Creek Middle School (middle), rated C-. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 551 Katherine Ave, Baltimore, MD compare to other homes in Essex 21221?

Among the 12,683 homes in Essex 21221, it is worth more than 81% of them ($415,107 against a typical $286,679), its price per square foot is higher than 30% of them ($186 against a typical $208), it is bigger than 90% of them (2,231 ft² against a typical 1,245 ft²), its lot is bigger than 31% of them (0.11 ac against a typical 0.16 ac) and it is newer than 96% of them (2020 against a typical 1957). Measured against all of Baltimore County, it is worth more than 63% 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 551 Katherine Ave, Baltimore, MD?

The 2025 property tax bill for 551 Katherine Ave, Baltimore, MD was $5,923. The county assessed it at $404,400.

More homes on Katherine Ave

Closest homes

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Assigned schools

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