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Single Family ResidenceResidential
$298,452$172 / 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 98How 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 $156,630 on Sep 2, 2003

421 MALLARD DR

GREENSBORO, MD 21639
2.5
Baths
1,732 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$298K
$291K low$306K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$156,630 · Sep 2, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,570 (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.$240,867 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$226,333
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$255,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCAROLINE
Lot (acres)The size of the land the home sits on, from county records.0.14
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
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.Mixed
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 · 156 ft²Porch · 110 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.

E
Greensboro Elementary SchoolB+
Elementary · Grades PK–5 · 0.2 mi
H
North Caroline High SchoolC-
High · Grades 9–12 · 5.5 mi
M
Lockerman Middle SchoolC
Middle · Grades 6–8 · 6.5 mi

District: Caroline County Public Schools

Neighborhood · ZIP 21639These 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.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.39

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.9.6%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
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.4,691
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.140 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$65,841
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,893
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.44 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

421 Mallard 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 more than 80% of homes in Greensboro
  • Costs less per square foot than 71% of homes in Greensboro 21639
  • Bigger than 75% of homes in Greensboro
  • Has a smaller lot than 95% of homes in Caroline County
  • Newer than 82% of homes in Greensboro 21639

What homes are worth in Greensboro 21639

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

This home
$105K$743K

This home is worth more than 50% of homes in Greensboro 21639.

How it measures up in Greensboro 21639

The dot is this home. The mark in the middle is the typical home in Greensboro 21639.

Estimated value$298,452
CheaperTypical $298,934Pricier

Pricier than 50% of homes nearby

Price per ft²$172
CheaperTypical $205Pricier

Pricier than 29% of homes nearby

Living area1,732 ft²
SmallerTypical 1,488 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.14 ac
SmallerTypical 0.7 acBigger

Bigger than 7% of homes nearby

Year built2003
OlderTypical 1986Newer

Newer than 82% of homes nearby

How 421 Mallard Dr ranks against every home in each area.
MeasureThis homeGreensboroGreensboro 21639Caroline County
Estimated valuepricier than$298,45280% of homes50% of homes46% of homes
Price per ft²pricier than$17244% of homes29% of homes38% of homes
Living areabigger than1,732 ft²75% of homes64% of homes57% of homes
Lot sizebigger than0.14 ac18% of homes7% of homes5% of homes
Year builtnewer than200376% of homes82% of homes81% of homes

About 421 Mallard Dr

How much is 421 Mallard Dr, Greensboro, MD worth?

The TopHap Estimate for 421 Mallard Dr, Greensboro, MD is $298,452 as of Sep 24, 2026. The likely range is $291,040 to $305,864. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Mallard Dr, Greensboro, MD last sell?

421 Mallard Dr, Greensboro, MD last sold on Sep 2, 2003 for $156,630, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Mallard Dr, Greensboro, MD?

421 Mallard Dr, Greensboro, MD has 2.5 bathrooms, 1,732 square feet of living space and a 0.14-acre lot.

When was 421 Mallard Dr, Greensboro, MD built?

421 Mallard Dr, Greensboro, MD was built in 2003, making it 23 years old. The building has 2 stories.

What schools serve 421 Mallard Dr, Greensboro, MD?

421 Mallard Dr, Greensboro, MD is assigned to Greensboro Elementary School (elementary), rated B+; North Caroline High School (high), rated C-; Lockerman Middle School (middle), rated C. All sit in Caroline County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Mallard Dr, Greensboro, MD compare to other homes in Greensboro 21639?

Among the 1,684 homes in Greensboro 21639, it is worth more than 50% of them ($298,452 against a typical $298,934), its price per square foot is higher than 29% of them ($172 against a typical $205), it is bigger than 64% of them (1,732 ft² against a typical 1,488 ft²), its lot is bigger than 7% of them (0.14 ac against a typical 0.7 ac) and it is newer than 82% of them (2003 against a typical 1986). Measured against all of Caroline County, it is worth more than 46% 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 421 Mallard Dr, Greensboro, MD?

The 2025 property tax bill for 421 Mallard Dr, Greensboro, MD was $3,570. The county assessed it at $240,867.

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