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Single Family ResidenceResidential
$543,561$199 / 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 97How 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 $235,000 on Dec 16, 1997

9540 MAY DAY ST

LA PLATA, MD 20646
2.5
Baths
2,732 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.
2 ac
Lot SizeThe size of the land the home sits on, from county records.
1997
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$544K
$527K low$560K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$235,000 · Dec 16, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,689 (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.$483,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$133,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$350,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$456,667
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$483,900

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
15
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
22
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
77
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
80
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Conventional
CountyCHARLES
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.Central
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.Deck · 336 ft²Porch · 176 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
Maurice J. McDonough High SchoolC+
High · Grades 9–12 · 2.3 mi
E
Dr. James Craik Elementary SchoolA-
Elementary · Grades PK–5 · 2.7 mi
M
Piccowaxen Middle SchoolB+
Middle · Grades 6–8 · 12.4 mi

District: Charles County Public Schools

Neighborhood · ZIP 20646These 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.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.31

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.4%
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.23,382
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.280 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$129,154
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,771
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

9540 May Day St 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 77% of homes in Charles County
  • Bigger than 73% of homes in Charles County
  • Has a bigger lot than 80% of homes in Charles County

What homes are worth in La Plata 20646

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

This home
$224K$803K

This home is worth more than 73% of homes in La Plata 20646.

How it measures up in La Plata 20646

The dot is this home. The mark in the middle is the typical home in La Plata 20646.

Estimated value$543,561
CheaperTypical $451,494Pricier

Pricier than 73% of homes nearby

Price per ft²$199
CheaperTypical $207Pricier

Pricier than 43% of homes nearby

Living area2,732 ft²
SmallerTypical 2,218 ft²Bigger

Bigger than 70% of homes nearby

Lot size2 ac
SmallerTypical 0.77 acBigger

Bigger than 72% of homes nearby

Year built1997
OlderTypical 1992Newer

Newer than 58% of homes nearby

How 9540 May Day St ranks against every home in each area.
MeasureThis homeLa Plata 20646Charles County
Estimated valuepricier than$543,56173% of homes77% of homes
Price per ft²pricier than$19943% of homes44% of homes
Living areabigger than2,732 ft²70% of homes73% of homes
Lot sizebigger than2 ac72% of homes80% of homes
Year builtnewer than199758% of homes60% of homes

About 9540 May Day St

How much is 9540 May Day St, La Plata, MD worth?

The TopHap Estimate for 9540 May Day St, La Plata, MD is $543,561 as of Sep 24, 2026. The likely range is $527,455 to $559,666. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9540 May Day St, La Plata, MD last sell?

9540 May Day St, La Plata, MD last sold on Dec 16, 1997 for $235,000, according to the county's recorded deed.

How big is 9540 May Day St, La Plata, MD?

9540 May Day St, La Plata, MD has 2.5 bathrooms and 2,732 square feet of living space.

When was 9540 May Day St, La Plata, MD built?

9540 May Day St, La Plata, MD was built in 1997, making it 29 years old. It is a conventional home. The building has 2 stories.

What schools serve 9540 May Day St, La Plata, MD?

9540 May Day St, La Plata, MD is assigned to Maurice J. McDonough High School (high), rated C+; Dr. James Craik Elementary School (elementary), rated A-; Piccowaxen Middle School (middle), rated B+. All sit in Charles County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9540 May Day St, La Plata, MD compare to other homes in La Plata 20646?

Among the 8,787 homes in La Plata 20646, it is worth more than 73% of them ($543,561 against a typical $451,494), its price per square foot is higher than 43% of them ($199 against a typical $207), it is bigger than 70% of them (2,732 ft² against a typical 2,218 ft²), its lot is bigger than 72% of them (2 ac against a typical 0.77 ac) and it is newer than 58% of them (1997 against a typical 1992). Measured against all of Charles County, it is worth more than 77% 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 9540 May Day St, La Plata, MD?

The 2025 property tax bill for 9540 May Day St, La Plata, MD was $13,689. The county assessed it at $483,900.

More homes on May Day St

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