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Single Family ResidenceResidential
$343,832$177 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $339,000 on Oct 19, 2021

1830 WILHELM AVE

ROSEDALE, MD 21237
2
Baths
1,938 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.
0.39 ac
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$344K
$329K low$358K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$339,000 · Oct 19, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,933 (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.$263,067 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$234,133
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$292,000

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.0.39
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
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.Patio · 216 ft²Porch · 358 ft²

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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

E
Red House Run Elementary SchoolB
Elementary · Grades PK–5 · 1.5 mi
H
Overlea High SchoolD
High · Grades 9–12 · 2.5 mi
M
Nottingham Middle School
Middle · Grades 6–8 · 4.2 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21237These 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.89
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.31,022
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,671 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,346
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,623
Average tempThe average temperature here across a full year.56°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

1830 Wilhelm 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 65% of homes in Rosedale 21237
  • Costs less per square foot than 87% of homes in Rosedale 21237
  • Bigger than 82% of homes in Rosedale 21237
  • Has a bigger lot than 89% of homes in Rosedale 21237
  • Older than 78% of homes in Rosedale 21237

What homes are worth in Rosedale 21237

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

This home
$171K$612K

This home is worth more than 65% of homes in Rosedale 21237.

How it measures up in Rosedale 21237

The dot is this home. The mark in the middle is the typical home in Rosedale 21237.

Estimated value$343,832
CheaperTypical $313,866Pricier

Pricier than 65% of homes nearby

Price per ft²$177
CheaperTypical $217Pricier

Pricier than 13% of homes nearby

Living area1,938 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 82% of homes nearby

Lot size0.39 ac
SmallerTypical 0.16 acBigger

Bigger than 89% of homes nearby

Year built1954
OlderTypical 1978Newer

Newer than 22% of homes nearby

How 1830 Wilhelm Ave ranks against every home in each area.
MeasureThis homeRosedale 21237Baltimore County
Estimated valuepricier than$343,83265% of homes45% of homes
Price per ft²pricier than$17713% of homes14% of homes
Living areabigger than1,938 ft²82% of homes72% of homes
Lot sizebigger than0.39 ac89% of homes79% of homes
Year builtnewer than195422% of homes30% of homes

About 1830 Wilhelm Ave

How much is 1830 Wilhelm Ave, Rosedale, MD worth?

The TopHap Estimate for 1830 Wilhelm Ave, Rosedale, MD is $343,832 as of Jul 14, 2026. The likely range is $329,193 to $358,471. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1830 Wilhelm Ave, Rosedale, MD last sell?

1830 Wilhelm Ave, Rosedale, MD last sold on Oct 19, 2021 for $339,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 1830 Wilhelm Ave, Rosedale, MD?

1830 Wilhelm Ave, Rosedale, MD has 2 bathrooms, 1,938 square feet of living space and a 0.39-acre lot.

When was 1830 Wilhelm Ave, Rosedale, MD built?

1830 Wilhelm Ave, Rosedale, MD was built in 1954, making it 72 years old. It is a conventional home. The building has 1 story.

What schools serve 1830 Wilhelm Ave, Rosedale, MD?

1830 Wilhelm Ave, Rosedale, MD is assigned to Red House Run Elementary School (elementary), rated B; Overlea High School (high), rated D; Nottingham Middle School (middle). All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1830 Wilhelm Ave, Rosedale, MD compare to other homes in Rosedale 21237?

Among the 9,171 homes in Rosedale 21237, it is worth more than 65% of them ($343,832 against a typical $313,866), its price per square foot is higher than 13% of them ($177 against a typical $217), it is bigger than 82% of them (1,938 ft² against a typical 1,344 ft²), its lot is bigger than 89% of them (0.39 ac against a typical 0.16 ac) and it is newer than 22% of them (1954 against a typical 1978). Measured against all of Baltimore County, it is worth more than 45% 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 1830 Wilhelm Ave, Rosedale, MD?

The 2025 property tax bill for 1830 Wilhelm Ave, Rosedale, MD was $3,933. The county assessed it at $263,067.

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