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Single Family ResidenceResidential
Last sold for $155,000 on Dec 12, 2014

840 RIDGE RD

MOUNT AIRY, MD 21771
1.5
Baths
1,370 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 ac
Lot SizeThe size of the land the home sits on, from county records.
1929
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

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$155,000 · Dec 12, 2014

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,100 (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.$509,233 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$474,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$578,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHOWARD
Lot (acres)The size of the land the home sits on, from county records.5.00
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Electric
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, Detached
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 · 158 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
Lisbon Elementary SchoolA
Elementary · Grades KG–5 · 5.8 mi
M
Glenwood Middle SchoolA
Middle · Grades 6–8 · 8.8 mi
H
Glenelg High SchoolA+
High · Grades 9–12 · 10.6 mi

District: Howard 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

840 Ridge 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.

  • Smaller than 83% of homes in Mount Airy 21771
  • Has a bigger lot than 95% of homes in Howard County
  • Among the oldest homes in Howard County

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.

Living area1,370 ft²
SmallerTypical 2,184 ft²Bigger

Bigger than 17% of homes nearby

Lot size5 ac
SmallerTypical 0.95 acBigger

Bigger than 91% of homes nearby

Year built1929
OlderTypical 1988Newer

Newer than 7% of homes nearby

How 840 Ridge Rd ranks against every home in each area.
MeasureThis homeMount Airy 21771Howard County
Living areabigger than1,370 ft²17% of homes22% of homes
Lot sizebigger than5 ac91% of homes95% of homes
Year builtnewer than19297% of homesalmost no homes

About 840 Ridge Rd

When did 840 Ridge Rd, Mount Airy, MD last sell?

840 Ridge Rd, Mount Airy, MD last sold on Dec 12, 2014 for $155,000, according to the county's recorded deed.

How big is 840 Ridge Rd, Mount Airy, MD?

840 Ridge Rd, Mount Airy, MD has 1.5 bathrooms, 1,370 square feet of living space and a 5.00-acre lot.

When was 840 Ridge Rd, Mount Airy, MD built?

840 Ridge Rd, Mount Airy, MD was built in 1929, making it 97 years old. The building has 2 stories.

What schools serve 840 Ridge Rd, Mount Airy, MD?

840 Ridge Rd, Mount Airy, MD is assigned to Lisbon Elementary School (elementary), rated A; Glenwood Middle School (middle), rated A; Glenelg High School (high), rated A+. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Ridge Rd, Mount Airy, MD compare to other homes in Mount Airy 21771?

Among the 10,752 homes in Mount Airy 21771, it is bigger than 17% of them (1,370 ft² against a typical 2,184 ft²), its lot is bigger than 91% of them (5 ac against a typical 0.95 ac) and it is newer than 7% of them (1929 against a typical 1988). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 840 Ridge Rd, Mount Airy, MD?

The 2025 property tax bill for 840 Ridge Rd, Mount Airy, MD was $7,100. The county assessed it at $509,233.

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More homes in Mount Airy 21771

Assigned schools

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