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TownhouseResidential
$260,770$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 92How 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 $185,000 on Jan 4, 2021

3621 DOUBLE ROCK LN

BALTIMORE, MD 21234
3 / 1
Baths
1,470 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.
3,163 ft²
Lot SizeThe size of the land the home sits on, from county records.
1976
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$261K
$241K low$281K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$185,000 · Jan 4, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,153 (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.$240,267 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$219,633
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$260,900

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.07
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.Deck · 224 ft²Porch · 60 ft²

Transaction History(2)

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.

M
Parkville Middle SchoolC
Middle · Grades 6–8 · 0.5 mi
H
Parkville High SchoolD
High · Grades 9–12 · 1.5 mi
E
Oakleigh Elementary SchoolD+
Elementary · Grades PK–5 · 2.2 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21234These 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.90
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.45

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.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
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.67,739
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,989 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,636
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$110,885
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

3621 Double Rock Ln 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 78% of homes in Baltimore County
  • Costs less per square foot than 85% of homes in Baltimore County
  • Bigger than 66% of homes in Parkville 21234
  • Has a smaller lot than 77% of homes in Parkville 21234
  • Newer than 77% of homes in Parkville 21234

What homes are worth in Parkville 21234

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

This home
$162K$604K

This home is worth more than 35% of homes in Parkville 21234.

How it measures up in Parkville 21234

The dot is this home. The mark in the middle is the typical home in Parkville 21234.

Estimated value$260,770
CheaperTypical $287,859Pricier

Pricier than 35% of homes nearby

Price per ft²$177
CheaperTypical $210Pricier

Pricier than 20% of homes nearby

Living area1,470 ft²
SmallerTypical 1,336 ft²Bigger

Bigger than 66% of homes nearby

Lot size3,163 ft²
SmallerTypical 0.14 acBigger

Bigger than 23% of homes nearby

Year built1976
OlderTypical 1956Newer

Newer than 77% of homes nearby

How 3621 Double Rock Ln ranks against every home in each area.
MeasureThis homeParkville 21234Baltimore County
Estimated valuepricier than$260,77035% of homes22% of homes
Price per ft²pricier than$17720% of homes15% of homes
Living areabigger than1,470 ft²66% of homes50% of homes
Lot sizebigger than3,163 ft²23% of homes28% of homes
Year builtnewer than197677% of homes59% of homes

About 3621 Double Rock Ln

How much is 3621 Double Rock Ln, Baltimore, MD worth?

The TopHap Estimate for 3621 Double Rock Ln, Baltimore, MD is $260,770 as of Sep 24, 2026. The likely range is $240,600 to $280,940. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3621 Double Rock Ln, Baltimore, MD last sell?

3621 Double Rock Ln, Baltimore, MD last sold on Jan 4, 2021 for $185,000, according to the county's recorded deed.

How big is 3621 Double Rock Ln, Baltimore, MD?

3621 Double Rock Ln, Baltimore, MD has 3 bathrooms, 1,470 square feet of living space and a 0.07-acre lot.

When was 3621 Double Rock Ln, Baltimore, MD built?

3621 Double Rock Ln, Baltimore, MD was built in 1976, making it 50 years old. It is a townhouse home. The building has 2 stories.

What schools serve 3621 Double Rock Ln, Baltimore, MD?

3621 Double Rock Ln, Baltimore, MD is assigned to Parkville Middle School (middle), rated C; Parkville High School (high), rated D; Oakleigh Elementary School (elementary), rated D+. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3621 Double Rock Ln, Baltimore, MD compare to other homes in Parkville 21234?

Among the 20,392 homes in Parkville 21234, it is worth more than 35% of them ($260,770 against a typical $287,859), its price per square foot is higher than 20% of them ($177 against a typical $210), it is bigger than 66% of them (1,470 ft² against a typical 1,336 ft²), its lot is bigger than 23% of them (3,163 ft² against a typical 0.14 ac) and it is newer than 77% of them (1976 against a typical 1956). Measured against all of Baltimore County, it is worth more than 22% 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 3621 Double Rock Ln, Baltimore, MD?

The 2025 property tax bill for 3621 Double Rock Ln, Baltimore, MD was $4,153. The county assessed it at $240,267.

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