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Single Family ResidenceResidential
$290,814$184 / 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 Sep 24, 2026
Last sold for $173,000 on Oct 18, 2011

1817 GREENCASTLE DR

BALTIMORE, MD 21237
2 / 1
Baths
1,580 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$291K
$273K low$309K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$173,000 · Oct 18, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,218 (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.$211,800 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$198,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$224,800

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.Split Level
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.20
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, 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.Patio · 400 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.

E
Red House Run Elementary SchoolC-
Elementary · Grades PK–5 · 0.3 mi
H
Overlea High SchoolD-
High · Grades 9–12 · 0.7 mi
M
Nottingham Middle SchoolD-
Middle · Grades 6–8 · 2.5 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

1817 Greencastle 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 less than 69% of homes in Baltimore County
  • Costs less per square foot than 81% of homes in Baltimore County
  • Bigger than 65% of homes in Rosedale 21237
  • Has a bigger lot than 66% of homes in Rosedale 21237
  • Older than 72% 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
$168K$620K

This home is worth more than 39% 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$290,814
CheaperTypical $311,393Pricier

Pricier than 39% of homes nearby

Price per ft²$184
CheaperTypical $214Pricier

Pricier than 24% of homes nearby

Living area1,580 ft²
SmallerTypical 1,364 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.2 ac
SmallerTypical 0.16 acBigger

Bigger than 66% of homes nearby

Year built1957
OlderTypical 1978Newer

Newer than 28% of homes nearby

How 1817 Greencastle Dr ranks against every home in each area.
MeasureThis homeRosedale 21237Baltimore County
Estimated valuepricier than$290,81439% of homes31% of homes
Price per ft²pricier than$18424% of homes19% of homes
Living areabigger than1,580 ft²65% of homes55% of homes
Lot sizebigger than0.2 ac66% of homes60% of homes
Year builtnewer than195728% of homes39% of homes

About 1817 Greencastle Dr

How much is 1817 Greencastle Dr, Baltimore, MD worth?

The TopHap Estimate for 1817 Greencastle Dr, Baltimore, MD is $290,814 as of Sep 24, 2026. The likely range is $272,682 to $308,946. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1817 Greencastle Dr, Baltimore, MD last sell?

1817 Greencastle Dr, Baltimore, MD last sold on Oct 18, 2011 for $173,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 1817 Greencastle Dr, Baltimore, MD?

1817 Greencastle Dr, Baltimore, MD has 2 bathrooms, 1,580 square feet of living space and a 0.20-acre lot.

When was 1817 Greencastle Dr, Baltimore, MD built?

1817 Greencastle Dr, Baltimore, MD was built in 1957, making it 69 years old. It is a split level home. The building has 2 stories.

What schools serve 1817 Greencastle Dr, Baltimore, MD?

1817 Greencastle Dr, Baltimore, MD is assigned to Red House Run Elementary School (elementary), rated C-; Overlea High School (high), rated D-; Nottingham Middle 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 1817 Greencastle Dr, Baltimore, MD compare to other homes in Rosedale 21237?

Among the 9,177 homes in Rosedale 21237, it is worth more than 39% of them ($290,814 against a typical $311,393), its price per square foot is higher than 24% of them ($184 against a typical $214), it is bigger than 65% of them (1,580 ft² against a typical 1,364 ft²), its lot is bigger than 66% of them (0.2 ac against a typical 0.16 ac) and it is newer than 28% of them (1957 against a typical 1978). Measured against all of Baltimore County, it is worth more than 31% 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 1817 Greencastle Dr, Baltimore, MD?

The 2025 property tax bill for 1817 Greencastle Dr, Baltimore, MD was $3,218. The county assessed it at $211,800.

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