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Single Family ResidenceResidential
$916,279$227 / 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 95How 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 $876,645 on Mar 17, 2008

1908 CASTLE GREEN CIR

MOUNT AIRY, MD 21771
3.5
Baths
4,036 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
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

$916K
$867K low$965K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$876,645 · Mar 17, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,309 (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.$860,000 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$803,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$916,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.45
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
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.Porch · 168 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.

E
Parr's Ridge Elementary School
Elementary · Grades PK–2 · 1.5 mi
M
Mount Airy Middle SchoolA-
Middle · Grades 6–8 · 1.6 mi
H
South Carroll High SchoolB+
High · Grades 9–12 · 6.8 mi

District: Carroll County Public Schools

Neighborhood · ZIP 21771These 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.59
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.37

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.32,505
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.382 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$151,406
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$162,296
Average tempThe average temperature here across a full year.53°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

1908 Castle Green Cir 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 96% of homes in Carroll County
  • Costs less per square foot than 84% of homes in Mount Airy 21771
  • Bigger than 97% of homes in Carroll County
  • Has a smaller lot than 70% of homes in Mount Airy 21771
  • Newer than 92% of homes in Mount Airy 21771

What homes are worth in Mount Airy 21771

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

This home
$322K$1.1M

This home is worth more than 92% of homes in Mount Airy 21771.

How it measures up in Mount Airy 21771

The dot is this home. The mark in the middle is the typical home in Mount Airy 21771.

Estimated value$916,279
CheaperTypical $608,855Pricier

Pricier than 92% of homes nearby

Price per ft²$227
CheaperTypical $282Pricier

Pricier than 16% of homes nearby

Living area4,036 ft²
SmallerTypical 2,184 ft²Bigger

Bigger than 94% of homes nearby

Lot size0.45 ac
SmallerTypical 0.94 acBigger

Bigger than 30% of homes nearby

Year built2007
OlderTypical 1988Newer

Newer than 92% of homes nearby

How 1908 Castle Green Cir ranks against every home in each area.
MeasureThis homeMount Airy 21771Carroll County
Estimated valuepricier than$916,27992% of homes96% of homes
Price per ft²pricier than$22716% of homes21% of homes
Living areabigger than4,036 ft²94% of homes97% of homes
Lot sizebigger than0.45 ac30% of homes39% of homes
Year builtnewer than200792% of homes91% of homes

About 1908 Castle Green Cir

How much is 1908 Castle Green Cir, Mount Airy, MD worth?

The TopHap Estimate for 1908 Castle Green Cir, Mount Airy, MD is $916,279 as of Sep 24, 2026. The likely range is $867,138 to $965,420. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1908 Castle Green Cir, Mount Airy, MD last sell?

1908 Castle Green Cir, Mount Airy, MD last sold on Mar 17, 2008 for $876,645, according to the county's recorded deed.

How big is 1908 Castle Green Cir, Mount Airy, MD?

1908 Castle Green Cir, Mount Airy, MD has 3.5 bathrooms, 4,036 square feet of living space and a 0.45-acre lot.

When was 1908 Castle Green Cir, Mount Airy, MD built?

1908 Castle Green Cir, Mount Airy, MD was built in 2007, making it 19 years old. The building has 2 stories.

What schools serve 1908 Castle Green Cir, Mount Airy, MD?

1908 Castle Green Cir, Mount Airy, MD is assigned to Parr's Ridge Elementary School (elementary); Mount Airy Middle School (middle), rated A-; South Carroll High School (high), rated B+. All sit in Carroll County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1908 Castle Green Cir, Mount Airy, MD compare to other homes in Mount Airy 21771?

Among the 10,756 homes in Mount Airy 21771, it is worth more than 92% of them ($916,279 against a typical $608,855), its price per square foot is higher than 16% of them ($227 against a typical $282), it is bigger than 94% of them (4,036 ft² against a typical 2,184 ft²), its lot is bigger than 30% of them (0.45 ac against a typical 0.94 ac) and it is newer than 92% of them (2007 against a typical 1988). Measured against all of Carroll County, it is worth more than 96% 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 1908 Castle Green Cir, Mount Airy, MD?

The 2025 property tax bill for 1908 Castle Green Cir, Mount Airy, MD was $10,309. The county assessed it at $860,000.

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