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Residential (General/Single)Residential
$969,577
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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

OPEN SPACE

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

Valuation

$970K
$915K low$1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$60 (2025)

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.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

Scores 0–100; higher = greater projected risk.

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.20.04
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
Mount Airy Middle SchoolA-
Middle · Grades 6–8 · 2.7 mi
E
Parr's Ridge Elementary School
Elementary · Grades PK–2 · 2.9 mi
H
South Carroll High SchoolB+
High · Grades 9–12 · 4.6 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%

Owner Tools

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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 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 98% of homes in Carroll County
  • Has a bigger lot than 98% 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 94% 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$969,577
CheaperTypical $609,833Pricier

Pricier than 94% of homes nearby

Lot size20.04 ac
SmallerTypical 0.95 acBigger

Bigger than 98% of homes nearby

How Open Space ranks against every home in each area.
MeasureThis homeMount Airy 21771Carroll County
Estimated valuepricier than$969,57794% of homes98% of homes
Lot sizebigger than20.04 ac98% of homes97% of homes

About Open Space

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

The TopHap Estimate for Open Space, Mount Airy, MD is $969,577 as of Oct 21, 2026. The likely range is $915,221 to $1,023,933. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

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

Open Space, Mount Airy, MD last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve Open Space, Mount Airy, MD?

Open Space, Mount Airy, MD is assigned to Mount Airy Middle School (middle), rated A-; Parr's Ridge Elementary School (elementary); 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 Open Space, Mount Airy, MD compare to other homes in Mount Airy 21771?

Among the 10,755 homes in Mount Airy 21771, it is worth more than 94% of them ($969,577 against a typical $609,833) and its lot is bigger than 98% of them (20.04 ac against a typical 0.95 ac). Measured against all of Carroll County, it is worth more than 98% 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 Open Space, Mount Airy, MD?

The 2025 property tax bill for Open Space, Mount Airy, MD was $60.

More homes on Open Space

Closest homes

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Assigned schools

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