Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$260,986$174 / 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 75How 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 $63,000 on Dec 19, 2003

21840 WATER ST

PRESTON, MD 21655
1.5
Baths
1,496 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$261K
$196K low$326K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$63,000 · Dec 19, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,590 (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.$290,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$72,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$218,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$231,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$290,900

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.24 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.64%
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.1 percent flood zone

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
CountyCAROLINE
Lot (acres)The size of the land the home sits on, from county records.0.23
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Baseboard
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
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront-Not Specified
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 200 ft²Porch · 284 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
Preston Elementary SchoolA
Elementary · Grades PK–5 · 3.2 mi
H
Colonel Richardson High SchoolC
High · Grades 9–12 · 8.3 mi
M
Colonel Richardson Middle SchoolB
Middle · Grades 6–8 · 8.4 mi

District: Caroline County Public Schools

Neighborhood · ZIP 21655These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.35

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.8.6%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.7%
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.4,300
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.77 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$79,033
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$100,494
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

21840 Water 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 less than 73% of homes in Preston 21655
  • Costs less per square foot than 73% of homes in Preston 21655
  • Has a smaller lot than 97% of homes in Preston 21655
  • Older than 89% of homes in Preston 21655

What homes are worth in Preston 21655

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

This home
$108K$934K

This home is worth more than 27% of homes in Preston 21655.

How it measures up in Preston 21655

The dot is this home. The mark in the middle is the typical home in Preston 21655.

Estimated value$260,986
CheaperTypical $334,176Pricier

Pricier than 27% of homes nearby

Price per ft²$174
CheaperTypical $208Pricier

Pricier than 27% of homes nearby

Living area1,496 ft²
SmallerTypical 1,593 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.23 ac
SmallerTypical 1.27 acBigger

Bigger than 3% of homes nearby

Year built1900
OlderTypical 1980Newer

Newer than 11% of homes nearby

How 21840 Water St ranks against every home in each area.
MeasureThis homePreston 21655Caroline County
Estimated valuepricier than$260,98627% of homes36% of homes
Price per ft²pricier than$17427% of homes40% of homes
Living areabigger than1,496 ft²43% of homes43% of homes
Lot sizebigger than0.23 ac3% of homes17% of homes
Year builtnewer than190011% of homes13% of homes

About 21840 Water St

How much is 21840 Water St, Preston, MD worth?

The TopHap Estimate for 21840 Water St, Preston, MD is $260,986 as of Aug 30, 2026. The likely range is $195,881 to $326,091. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21840 Water St, Preston, MD last sell?

21840 Water St, Preston, MD last sold on Dec 19, 2003 for $63,000, according to the county's recorded deed.

How big is 21840 Water St, Preston, MD?

21840 Water St, Preston, MD has 1.5 bathrooms, 1,496 square feet of living space and a 0.23-acre lot.

When was 21840 Water St, Preston, MD built?

21840 Water St, Preston, MD was built in 1900, making it 126 years old. The building has 2 stories.

What schools serve 21840 Water St, Preston, MD?

21840 Water St, Preston, MD is assigned to Preston Elementary School (elementary), rated A; Colonel Richardson High School (high), rated C; Colonel Richardson Middle School (middle), rated B. All sit in Caroline County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21840 Water St, Preston, MD compare to other homes in Preston 21655?

Among the 1,984 homes in Preston 21655, it is worth more than 27% of them ($260,986 against a typical $334,176), its price per square foot is higher than 27% of them ($174 against a typical $208), it is bigger than 43% of them (1,496 ft² against a typical 1,593 ft²), its lot is bigger than 3% of them (0.23 ac against a typical 1.27 ac) and it is newer than 11% of them (1900 against a typical 1980). Measured against all of Caroline County, it is worth more than 36% 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 21840 Water St, Preston, MD?

The 2025 property tax bill for 21840 Water St, Preston, MD was $2,590. The county assessed it at $290,900.

More homes on Water St

Closest homes

More homes in Preston 21655

Assigned schools

Explore the area

See this home in context

Open 21840 Water St 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