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Single Family ResidenceResidential
$593,546$162 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $80,000 on Sep 18, 1980

401 ARMSTRONG RD

MIDDLE RIVER, MD 21220
1
Baths
3,666 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.
0.79 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$594K
$537K low$650K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$80,000 · Sep 18, 1980
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$593,546
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$474,837

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,094 (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.$457,467 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$433,233
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$481,700

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.50
39
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
78
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.12 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.0.2 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.0.79
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
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.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 · 432 ft²Shed · 325 ft²Boat access

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 · 0.6 mi
M
Stemmers Run Middle SchoolD
Middle · Grades 6–8 · 3.0 mi
H
Kenwood High SchoolD-
High · Grades 9–12 · 3.3 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

401 Armstrong 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 87% of homes in Middle River 21220
  • Costs less per square foot than 92% of homes in Middle River 21220
  • Bigger than 98% of homes in Middle River 21220
  • Has a bigger lot than 95% of homes in Middle River 21220

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
$163K$871K

This home is worth more than 87% 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$593,546
CheaperTypical $341,070Pricier

Pricier than 87% of homes nearby

Price per ft²$162
CheaperTypical $222Pricier

Pricier than 8% of homes nearby

Living area3,666 ft²
SmallerTypical 1,421 ft²Bigger

Bigger than 98% of homes nearby

Lot size0.79 ac
SmallerTypical 0.13 acBigger

Bigger than 95% of homes nearby

Year built1957
OlderTypical 1980Newer

Newer than 37% of homes nearby

How 401 Armstrong Rd ranks against every home in each area.
MeasureThis homeMiddle River 21220Baltimore County
Estimated valuepricier than$593,54687% of homes83% of homes
Price per ft²pricier than$1628% of homes8% of homes
Living areabigger than3,666 ft²98% of homes96% of homes
Lot sizebigger than0.79 ac95% of homes86% of homes
Year builtnewer than195737% of homes39% of homes

About 401 Armstrong Rd

How much is 401 Armstrong Rd, Middle River, MD worth?

The TopHap Estimate for 401 Armstrong Rd, Middle River, MD is $593,546 as of Jul 14, 2026. The likely range is $537,154 to $649,938. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 401 Armstrong Rd, Middle River, MD last sell?

401 Armstrong Rd, Middle River, MD last sold on Sep 18, 1980 for $80,000, according to the county's recorded deed.

How big is 401 Armstrong Rd, Middle River, MD?

401 Armstrong Rd, Middle River, MD has 1 bathrooms, 3,666 square feet of living space and a 0.79-acre lot.

When was 401 Armstrong Rd, Middle River, MD built?

401 Armstrong Rd, Middle River, MD was built in 1957, making it 69 years old. It is a conventional home. The building has 2 stories.

What schools serve 401 Armstrong Rd, Middle River, MD?

401 Armstrong 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 401 Armstrong Rd, Middle River, MD compare to other homes in Middle River 21220?

Among the 13,084 homes in Middle River 21220, it is worth more than 87% of them ($593,546 against a typical $341,070), its price per square foot is higher than 8% of them ($162 against a typical $222), it is bigger than 98% of them (3,666 ft² against a typical 1,421 ft²), its lot is bigger than 95% of them (0.79 ac against a typical 0.13 ac) and it is newer than 37% of them (1957 against a typical 1980). Measured against all of Baltimore County, it is worth more than 83% 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 401 Armstrong Rd, Middle River, MD?

The 2025 property tax bill for 401 Armstrong Rd, Middle River, MD was $6,094. The county assessed it at $457,467.

Closest homes

More homes in Middle River 21220

Assigned schools

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