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Single Family ResidenceResidential
$630,778$365 / 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 $600,000 on Nov 27, 2023

910 FROG MORTAR RD

MIDDLE RIVER, MD 21220
1
Baths
1,728 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
2000
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$631K
$601K low$661K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$600,000 · Nov 27, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,707 (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.$485,467 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$472,633
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$498,300

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.5 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.23
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Baseboard
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Spa/Hot Tub (Only)
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 250 ft²Boat access

Transaction History(3)

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
Seneca Elementary SchoolC-
Elementary · Grades PK–5 · 0.8 mi
M
Stemmers Run Middle SchoolD
Middle · Grades 6–8 · 3.1 mi
H
Kenwood High SchoolD-
High · Grades 9–12 · 3.4 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21220These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
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.43,388
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,388 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,236
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,046
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

910 Frog Mortar 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 more than 91% of homes in Middle River 21220
  • Costs more per square foot than 96% of homes in Middle River 21220
  • Has a bigger lot than 73% of homes in Middle River 21220
  • Newer than 88% of homes in Baltimore County

What homes are worth in Middle River 21220

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

This home
$151K$860K

This home is worth more than 91% of homes in Middle River 21220.

How it measures up in Middle River 21220

The dot is this home. The mark in the middle is the typical home in Middle River 21220.

Estimated value$630,778
CheaperTypical $334,099Pricier

Pricier than 91% of homes nearby

Price per ft²$365
CheaperTypical $215Pricier

Pricier than 96% of homes nearby

Living area1,728 ft²
SmallerTypical 1,438 ft²Bigger

Bigger than 63% of homes nearby

Lot size0.23 ac
SmallerTypical 0.13 acBigger

Bigger than 73% of homes nearby

Year built2000
OlderTypical 1980Newer

Newer than 72% of homes nearby

How 910 Frog Mortar Rd ranks against every home in each area.
MeasureThis homeMiddle River 21220Baltimore County
Estimated valuepricier than$630,77891% of homes86% of homes
Price per ft²pricier than$36596% of homes96% of homes
Living areabigger than1,728 ft²63% of homes63% of homes
Lot sizebigger than0.23 ac73% of homes66% of homes
Year builtnewer than200072% of homes88% of homes

About 910 Frog Mortar Rd

How much is 910 Frog Mortar Rd, Middle River, MD worth?

The TopHap Estimate for 910 Frog Mortar Rd, Middle River, MD is $630,778 as of Sep 24, 2026. The likely range is $600,770 to $660,786. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 910 Frog Mortar Rd, Middle River, MD last sell?

910 Frog Mortar Rd, Middle River, MD last sold on Nov 27, 2023 for $600,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 910 Frog Mortar Rd, Middle River, MD?

910 Frog Mortar Rd, Middle River, MD has 1 bathrooms, 1,728 square feet of living space and a 0.23-acre lot.

When was 910 Frog Mortar Rd, Middle River, MD built?

910 Frog Mortar Rd, Middle River, MD was built in 2000, making it 26 years old. It is a conventional home. The building has 2 stories.

What schools serve 910 Frog Mortar Rd, Middle River, MD?

910 Frog Mortar Rd, Middle River, MD is assigned to Seneca Elementary School (elementary), rated C-; Stemmers Run Middle School (middle), rated D; Kenwood High School (high), rated D-. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 910 Frog Mortar Rd, Middle River, MD compare to other homes in Middle River 21220?

Among the 13,110 homes in Middle River 21220, it is worth more than 91% of them ($630,778 against a typical $334,099), its price per square foot is higher than 96% of them ($365 against a typical $215), it is bigger than 63% of them (1,728 ft² against a typical 1,438 ft²), its lot is bigger than 73% of them (0.23 ac against a typical 0.13 ac) and it is newer than 72% of them (2000 against a typical 1980). Measured against all of Baltimore County, it is worth more than 86% 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 910 Frog Mortar Rd, Middle River, MD?

The 2025 property tax bill for 910 Frog Mortar Rd, Middle River, MD was $6,707. The county assessed it at $485,467.

More homes on Frog Mortar Rd

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