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Rural ResidenceResidential
$377,817$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 87How 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

12171 ROSEMONT FARM LN

BIG POOL, MD 21711
2
Baths
1,318 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.
5.07 ac
Lot SizeThe size of the land the home sits on, from county records.
2010
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$378K
$330K low$426K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,796 (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.$274,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$60,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$213,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$232,967
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$274,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyWASHINGTON
Lot (acres)The size of the land the home sits on, from county records.5.07
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.Porch · 40 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
Clear Spring High SchoolB+
High · Grades 9–12 · 4.9 mi
M
Clear Spring Middle SchoolA-
Middle · Grades 6–8 · 5.0 mi
E
Clear Spring Elementary SchoolA-
Elementary · Grades PK–5 · 5.1 mi

District: Washington County Public Schools

Neighborhood · ZIP 21711These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.43

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
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.1,177
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.51 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$85,632
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,943
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.40 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

12171 Rosemont Farm Ln 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 65% of homes in Washington County
  • Costs more per square foot than 90% of homes in Washington County
  • Smaller than 66% of homes in Washington County
  • Has a bigger lot than 93% of homes in Washington County
  • Newer than 93% of homes in Big Pool 21711

What homes are worth in Big Pool 21711

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

This home
$135K$909K

This home is worth more than 62% of homes in Big Pool 21711.

How it measures up in Big Pool 21711

The dot is this home. The mark in the middle is the typical home in Big Pool 21711.

Estimated value$377,817
CheaperTypical $328,167Pricier

Pricier than 62% of homes nearby

Price per ft²$287
CheaperTypical $225Pricier

Pricier than 80% of homes nearby

Living area1,318 ft²
SmallerTypical 1,486 ft²Bigger

Bigger than 35% of homes nearby

Lot size5.07 ac
SmallerTypical 3.2 acBigger

Bigger than 65% of homes nearby

Year built2010
OlderTypical 1969Newer

Newer than 93% of homes nearby

How 12171 Rosemont Farm Ln ranks against every home in each area.
MeasureThis homeBig Pool 21711Washington County
Estimated valuepricier than$377,81762% of homes65% of homes
Price per ft²pricier than$28780% of homes90% of homes
Living areabigger than1,318 ft²35% of homes34% of homes
Lot sizebigger than5.07 ac65% of homes93% of homes
Year builtnewer than201093% of homes93% of homes

About 12171 Rosemont Farm Ln

How much is 12171 Rosemont Farm Ln, Big Pool, MD worth?

The TopHap Estimate for 12171 Rosemont Farm Ln, Big Pool, MD is $377,817 as of Aug 30, 2026. The likely range is $329,720 to $425,914. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12171 Rosemont Farm Ln, Big Pool, MD last sell?

12171 Rosemont Farm Ln, Big Pool, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 12171 Rosemont Farm Ln, Big Pool, MD?

12171 Rosemont Farm Ln, Big Pool, MD has 2 bathrooms, 1,318 square feet of living space and a 5.07-acre lot.

When was 12171 Rosemont Farm Ln, Big Pool, MD built?

12171 Rosemont Farm Ln, Big Pool, MD was built in 2010, making it 16 years old. The building has 1 story.

What schools serve 12171 Rosemont Farm Ln, Big Pool, MD?

12171 Rosemont Farm Ln, Big Pool, MD is assigned to Clear Spring High School (high), rated B+; Clear Spring Middle School (middle), rated A-; Clear Spring Elementary School (elementary), rated A-. All sit in Washington County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12171 Rosemont Farm Ln, Big Pool, MD compare to other homes in Big Pool 21711?

Among the 423 homes in Big Pool 21711, it is worth more than 62% of them ($377,817 against a typical $328,167), its price per square foot is higher than 80% of them ($287 against a typical $225), it is bigger than 35% of them (1,318 ft² against a typical 1,486 ft²), its lot is bigger than 65% of them (5.07 ac against a typical 3.2 ac) and it is newer than 93% of them (2010 against a typical 1969). Measured against all of Washington County, it is worth more than 65% 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 12171 Rosemont Farm Ln, Big Pool, MD?

The 2025 property tax bill for 12171 Rosemont Farm Ln, Big Pool, MD was $1,796. The county assessed it at $274,100.

More homes on Rosemont Farm Ln

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