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Single Family ResidenceResidential
$404,407$238 / 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

21040 ASTER DR

CALLAWAY, MD 20620
2
Baths
1,700 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.
2.36 ac
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$404K
$368K low$440K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,226 (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.$313,667 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$311,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$318,200

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.43
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
82
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
23
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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
CountyST. MARY'S
Lot (acres)The size of the land the home sits on, from county records.2.36
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
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 · 192 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.

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

H
Leonardtown High SchoolC
High · Grades 9–12 · 4.3 mi
M
Leonardtown Middle SchoolA
Middle · Grades 6–8 · 4.4 mi
E
Piney Point Elementary SchoolA
Elementary · Grades PK–5 · 5.5 mi

District: St. Marys County Public Schools

Neighborhood · ZIP 20620These 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.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.1,369
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.294 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,224
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,818
Average tempThe average temperature here across a full year.57°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

21040 Aster 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.

  • Costs more per square foot than 68% of homes in Callaway 20620
  • Has a bigger lot than 80% of homes in St. Mary's County
  • Newer than 70% of homes in Callaway 20620

What homes are worth in Callaway 20620

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

This home
$223K$784K

This home is worth more than 41% of homes in Callaway 20620.

How it measures up in Callaway 20620

The dot is this home. The mark in the middle is the typical home in Callaway 20620.

Estimated value$404,407
CheaperTypical $447,390Pricier

Pricier than 41% of homes nearby

Price per ft²$238
CheaperTypical $218Pricier

Pricier than 68% of homes nearby

Living area1,700 ft²
SmallerTypical 1,782 ft²Bigger

Bigger than 45% of homes nearby

Lot size2.36 ac
SmallerTypical 1.5 acBigger

Bigger than 71% of homes nearby

Year built1998
OlderTypical 1995Newer

Newer than 70% of homes nearby

How 21040 Aster Dr ranks against every home in each area.
MeasureThis homeCallaway 20620St. Mary's County
Estimated valuepricier than$404,40741% of homes43% of homes
Price per ft²pricier than$23868% of homes52% of homes
Living areabigger than1,700 ft²45% of homes46% of homes
Lot sizebigger than2.36 ac71% of homes80% of homes
Year builtnewer than199870% of homes62% of homes

About 21040 Aster Dr

How much is 21040 Aster Dr, Callaway, MD worth?

The TopHap Estimate for 21040 Aster Dr, Callaway, MD is $404,407 as of Aug 30, 2026. The likely range is $368,421 to $440,393. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21040 Aster Dr, Callaway, MD last sell?

21040 Aster Dr, Callaway, MD last sold on Mar 29, 2004, according to the county's recorded deed.

How big is 21040 Aster Dr, Callaway, MD?

21040 Aster Dr, Callaway, MD has 2 bathrooms, 1,700 square feet of living space and a 2.36-acre lot.

When was 21040 Aster Dr, Callaway, MD built?

21040 Aster Dr, Callaway, MD was built in 1998, making it 28 years old. It is a split level home. The building has 2 stories.

What schools serve 21040 Aster Dr, Callaway, MD?

21040 Aster Dr, Callaway, MD is assigned to Leonardtown High School (high), rated C; Leonardtown Middle School (middle), rated A; Piney Point Elementary School (elementary), rated A. All sit in St. Marys County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21040 Aster Dr, Callaway, MD compare to other homes in Callaway 20620?

Among the 493 homes in Callaway 20620, it is worth more than 41% of them ($404,407 against a typical $447,390), its price per square foot is higher than 68% of them ($238 against a typical $218), it is bigger than 45% of them (1,700 ft² against a typical 1,782 ft²), its lot is bigger than 71% of them (2.36 ac against a typical 1.5 ac) and it is newer than 70% of them (1998 against a typical 1995). Measured against all of St. Mary's County, it is worth more than 43% 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 21040 Aster Dr, Callaway, MD?

The 2025 property tax bill for 21040 Aster Dr, Callaway, MD was $3,226. The county assessed it at $313,667.

More homes on Aster Dr

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Assigned schools

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