Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$253,424$287 / 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 86How 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 $65,000 on Jun 5, 2018

ST MARYS AVE

LA PLATA, MD 20646
1
Baths
884 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.
3,354 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$253K
$217K low$290K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$65,000 · Jun 5, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5 (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.$300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$300

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
19
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
78
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.
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.Residential (General/Single)
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyCHARLES
Lot (acres)The size of the land the home sits on, from county records.0.08
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.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 · 160 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.

Foreclosure Filings(1)

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

M
Milton M. Somers Middle SchoolB-
Middle · Grades 6–8 · 0.4 mi
E
Walter J. Mitchell Elementary SchoolB
Elementary · Grades PK–5 · 0.5 mi
H
La Plata High SchoolC+
High · Grades 9–12 · 2.3 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%

Owner Tools

Do you own this home?
Claim this home

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

St Marys Ave 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 96% of homes in La Plata 20646
  • Costs more per square foot than 95% of homes in Charles County
  • Among the smallest homes in La Plata 20646
  • Has a smaller lot than 84% of homes in La Plata 20646
  • Among the oldest homes in La Plata 20646

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
$222K$816K

This home is worth more than 4% 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$253,424
CheaperTypical $450,147Pricier

Pricier than 4% of homes nearby

Price per ft²$287
CheaperTypical $207Pricier

Pricier than 94% of homes nearby

Living area884 ft²
SmallerTypical 2,209 ft²Bigger

Smaller than almost all homes nearby

Lot size3,354 ft²
SmallerTypical 0.73 acBigger

Bigger than 16% of homes nearby

Year built1925
OlderTypical 1992Newer

Older than almost all homes nearby

How St Marys Ave ranks against every home in each area.
MeasureThis homeLa Plata 20646Charles County
Estimated valuepricier than$253,4244% of homes7% of homes
Price per ft²pricier than$28794% of homes95% of homes
Living areabigger than884 ft²almost no homesalmost no homes
Lot sizebigger than3,354 ft²16% of homes22% of homes
Year builtnewer than1925almost no homesalmost no homes

About St Marys Ave

How much is St Marys Ave, La Plata, MD worth?

The TopHap Estimate for St Marys Ave, La Plata, MD is $253,424 as of Sep 24, 2026. The likely range is $216,928 to $289,920. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did St Marys Ave, La Plata, MD last sell?

St Marys Ave, La Plata, MD last sold on Jun 5, 2018 for $65,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is St Marys Ave, La Plata, MD?

St Marys Ave, La Plata, MD has 1 bathrooms, 884 square feet of living space and a 0.08-acre lot.

When was St Marys Ave, La Plata, MD built?

St Marys Ave, La Plata, MD was built in 1925, making it 101 years old. It is a conventional home. The building has 1 story.

What schools serve St Marys Ave, La Plata, MD?

St Marys Ave, La Plata, MD is assigned to Milton M. Somers Middle School (middle), rated B-; Walter J. Mitchell Elementary School (elementary), rated B; La Plata High School (high), rated C+. All sit in Charles County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does St Marys Ave, La Plata, MD compare to other homes in La Plata 20646?

Among the 8,869 homes in La Plata 20646, it is worth more than 4% of them ($253,424 against a typical $450,147), its price per square foot is higher than 94% of them ($287 against a typical $207), it is bigger than almost none of them (884 ft² against a typical 2,209 ft²), its lot is bigger than 16% of them (3,354 ft² against a typical 0.73 ac) and it is newer than almost none of them (1925 against a typical 1992). Measured against all of Charles County, it is worth more than 7% 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 St Marys Ave, La Plata, MD?

The 2025 property tax bill for St Marys Ave, La Plata, MD was $5. The county assessed it at $300.

More homes on St Marys Ave

Closest homes

More homes in La Plata 20646

Assigned schools

Explore the area

See this home in context

Open St Marys Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map