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Residential (General/Single)Residential
$416,223
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 96How 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

OPEN SPACE RD

MOUNT AIRY, MD 21771
0
Baths
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$416K
$398K low$434K high

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.35
PoolWhether the property has a pool, and what kind, such as in-ground.No

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 · 0.8 mi
M
Mount Airy Middle SchoolB
Middle · Grades 6–8 · 1.0 mi
H
South Carroll High SchoolA-
High · Grades 9–12 · 7.9 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

Open Space Rd 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 88% of homes in Mount Airy 21771
  • Has a smaller lot than 77% 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
$325K$1.1M

This home is worth more than 12% 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$416,223
CheaperTypical $608,270Pricier

Pricier than 12% of homes nearby

Lot size0.35 ac
SmallerTypical 0.96 acBigger

Bigger than 23% of homes nearby

How Open Space Rd ranks against every home in each area.
MeasureThis homeMount Airy 21771Carroll County
Estimated valuepricier than$416,22312% of homes36% of homes
Lot sizebigger than0.35 ac23% of homes35% of homes

About Open Space Rd

How much is Open Space Rd, Mount Airy, MD worth?

The TopHap Estimate for Open Space Rd, Mount Airy, MD is $416,223 as of Sep 24, 2026. The likely range is $397,987 to $434,459. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did Open Space Rd, Mount Airy, MD last sell?

Open Space Rd, Mount Airy, MD last sold on Feb 12, 2008, according to the county's recorded deed.

What schools serve Open Space Rd, Mount Airy, MD?

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

How does Open Space Rd, 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 12% of them ($416,223 against a typical $608,270) and its lot is bigger than 23% of them (0.35 ac against a typical 0.96 ac). Measured against all of Carroll 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.

More homes on Open Space Rd

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Assigned schools

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See this home in context

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