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Single Family ResidenceResidential
$445,051$300 / 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 Aug 30, 2026
Last sold for $299,000 on Apr 20, 2015

3900 ALLENDALE CT

MONKTON, MD 21111
2
Baths
1,485 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.
0.54 ac
Lot SizeThe size of the land the home sits on, from county records.
1966
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$445K
$405K low$485K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$299,000 · Apr 20, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,457 (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.$445,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$175,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$270,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$408,033
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$445,300

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.Split Foyer
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.54
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Electric
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, Attached
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 · 144 ft²Porch · 322 ft²

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.

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
Jacksonville Elementary SchoolA
Elementary · Grades KG–5 · 1.7 mi
H
Dulaney High SchoolA-
High · Grades 9–12 · 6.2 mi
M
Cockeysville Middle SchoolB
Middle · Grades 6–8 · 6.3 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21111These 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.50
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 100.45

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
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.5,584
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.161 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$137,226
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$164,963
Average tempThe average temperature here across a full year.53°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

3900 Allendale Ct 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 87% of homes in Monkton 21111
  • Costs more per square foot than 85% of homes in Baltimore County
  • Smaller than 85% of homes in Monkton 21111
  • Has a smaller lot than 95% of homes in Monkton 21111
  • Older than 71% of homes in Monkton 21111

What homes are worth in Monkton 21111

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

This home
$303K$1.9M

This home is worth more than 13% of homes in Monkton 21111.

How it measures up in Monkton 21111

The dot is this home. The mark in the middle is the typical home in Monkton 21111.

Estimated value$445,051
CheaperTypical $707,647Pricier

Pricier than 13% of homes nearby

Price per ft²$300
CheaperTypical $284Pricier

Pricier than 61% of homes nearby

Living area1,485 ft²
SmallerTypical 2,516 ft²Bigger

Bigger than 15% of homes nearby

Lot size0.54 ac
SmallerTypical 2.23 acBigger

Bigger than 5% of homes nearby

Year built1966
OlderTypical 1979Newer

Newer than 29% of homes nearby

How 3900 Allendale Ct ranks against every home in each area.
MeasureThis homeMonkton 21111Baltimore County
Estimated valuepricier than$445,05113% of homes68% of homes
Price per ft²pricier than$30061% of homes85% of homes
Living areabigger than1,485 ft²15% of homes50% of homes
Lot sizebigger than0.54 ac5% of homes83% of homes
Year builtnewer than196629% of homes52% of homes

About 3900 Allendale Ct

How much is 3900 Allendale Ct, Monkton, MD worth?

The TopHap Estimate for 3900 Allendale Ct, Monkton, MD is $445,051 as of Aug 30, 2026. The likely range is $404,972 to $485,130. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3900 Allendale Ct, Monkton, MD last sell?

3900 Allendale Ct, Monkton, MD last sold on Apr 20, 2015 for $299,000, according to the county's recorded deed.

How big is 3900 Allendale Ct, Monkton, MD?

3900 Allendale Ct, Monkton, MD has 2 bathrooms, 1,485 square feet of living space and a 0.54-acre lot.

When was 3900 Allendale Ct, Monkton, MD built?

3900 Allendale Ct, Monkton, MD was built in 1966, making it 60 years old. It is a split foyer home. The building has 1 story.

What schools serve 3900 Allendale Ct, Monkton, MD?

3900 Allendale Ct, Monkton, MD is assigned to Jacksonville Elementary School (elementary), rated A; Dulaney High School (high), rated A-; Cockeysville Middle School (middle), rated B. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3900 Allendale Ct, Monkton, MD compare to other homes in Monkton 21111?

Among the 1,834 homes in Monkton 21111, it is worth more than 13% of them ($445,051 against a typical $707,647), its price per square foot is higher than 61% of them ($300 against a typical $284), it is bigger than 15% of them (1,485 ft² against a typical 2,516 ft²), its lot is bigger than 5% of them (0.54 ac against a typical 2.23 ac) and it is newer than 29% of them (1966 against a typical 1979). Measured against all of Baltimore County, it is worth more than 68% 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 3900 Allendale Ct, Monkton, MD?

The 2025 property tax bill for 3900 Allendale Ct, Monkton, MD was $5,457. The county assessed it at $445,300.

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