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Single Family ResidenceResidential
$139,346$86 / 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 93How 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 $98,000 on Jul 20, 2016

23515 POTOMAC HOLLOW RD SW

BARTON, MD 21521
1.5
Baths
1,626 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.
1.01 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$139K
$129K low$149K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$98,000 · Jul 20, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,707 (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.$148,000 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$131,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$180,800

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.61
88
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
48
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.39 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%

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
CountyALLEGANY
Lot (acres)The size of the land the home sits on, from county records.1.01
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
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.Porch · 383 ft²

Transaction History(3)

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.

M
Westmar Middle SchoolC
Middle · Grades 6–8 · 2.7 mi
E
George's Creek Elementary SchoolC
Elementary · Grades PK–5 · 4.4 mi
H
Mountain Ridge High SchoolB
High · Grades 9–12 · 10.0 mi

District: Allegany County Public Schools

Neighborhood · ZIP 21521These 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.73
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.4.0%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
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.1,241
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.50 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$58,552
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,797
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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

23515 Potomac Hollow Rd Sw 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 70% of homes in Barton 21521
  • Costs less per square foot than 67% of homes in Allegany County
  • Bigger than 67% of homes in Barton 21521
  • Has a bigger lot than 81% of homes in Allegany County
  • Older than 72% of homes in Allegany County

What homes are worth in Barton 21521

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

This home
$27K$440K

This home is worth more than 70% of homes in Barton 21521.

How it measures up in Barton 21521

The dot is this home. The mark in the middle is the typical home in Barton 21521.

Estimated value$139,346
CheaperTypical $110,192Pricier

Pricier than 70% of homes nearby

Price per ft²$86
CheaperTypical $82Pricier

Pricier than 56% of homes nearby

Living area1,626 ft²
SmallerTypical 1,402 ft²Bigger

Bigger than 67% of homes nearby

Lot size1.01 ac
SmallerTypical 0.36 acBigger

Bigger than 75% of homes nearby

Year built1920
OlderTypical 1945Newer

Newer than 34% of homes nearby

How 23515 Potomac Hollow Rd Sw ranks against every home in each area.
MeasureThis homeBarton 21521Allegany County
Estimated valuepricier than$139,34670% of homes47% of homes
Price per ft²pricier than$8656% of homes33% of homes
Living areabigger than1,626 ft²67% of homes66% of homes
Lot sizebigger than1.01 ac75% of homes81% of homes
Year builtnewer than192034% of homes28% of homes

About 23515 Potomac Hollow Rd Sw

How much is 23515 Potomac Hollow Rd Sw, Barton, MD worth?

The TopHap Estimate for 23515 Potomac Hollow Rd Sw, Barton, MD is $139,346 as of Sep 24, 2026. The likely range is $129,446 to $149,246. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23515 Potomac Hollow Rd Sw, Barton, MD last sell?

23515 Potomac Hollow Rd Sw, Barton, MD last sold on Jul 20, 2016 for $98,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 23515 Potomac Hollow Rd Sw, Barton, MD?

23515 Potomac Hollow Rd Sw, Barton, MD has 1.5 bathrooms, 1,626 square feet of living space and a 1.01-acre lot.

When was 23515 Potomac Hollow Rd Sw, Barton, MD built?

23515 Potomac Hollow Rd Sw, Barton, MD was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 23515 Potomac Hollow Rd Sw, Barton, MD?

23515 Potomac Hollow Rd Sw, Barton, MD is assigned to Westmar Middle School (middle), rated C; George's Creek Elementary School (elementary), rated C; Mountain Ridge High School (high), rated B. All sit in Allegany County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23515 Potomac Hollow Rd Sw, Barton, MD compare to other homes in Barton 21521?

Among the 583 homes in Barton 21521, it is worth more than 70% of them ($139,346 against a typical $110,192), its price per square foot is higher than 56% of them ($86 against a typical $82), it is bigger than 67% of them (1,626 ft² against a typical 1,402 ft²), its lot is bigger than 75% of them (1.01 ac against a typical 0.36 ac) and it is newer than 34% of them (1920 against a typical 1945). Measured against all of Allegany County, it is worth more than 47% 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 23515 Potomac Hollow Rd Sw, Barton, MD?

The 2025 property tax bill for 23515 Potomac Hollow Rd Sw, Barton, MD was $1,707. The county assessed it at $148,000.

More homes on Potomac Hollow Rd Sw

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