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Single Family ResidenceResidential
$389,275$322 / 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 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

407 ARMSTRONG RD

MIDDLE RIVER, MD 21220
1
Baths
1,208 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.
0.37 ac
Lot SizeThe size of the land the home sits on, from county records.
1913
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$389K
$373K low$405K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,182 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$358,533 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$354,767
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$362,300

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.
7
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.0.37
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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)
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 484 ft²Porch · 200 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 · 0.6 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%

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

407 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.

  • Costs more per square foot than 91% of homes in Middle River 21220
  • Smaller than 73% of homes in Baltimore County
  • Has a bigger lot than 86% of homes in Middle River 21220
  • Among the oldest 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
$151K$849K

This home is worth more than 64% 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$389,275
CheaperTypical $333,563Pricier

Pricier than 64% of homes nearby

Price per ft²$322
CheaperTypical $216Pricier

Pricier than 91% of homes nearby

Living area1,208 ft²
SmallerTypical 1,422 ft²Bigger

Bigger than 38% of homes nearby

Lot size0.37 ac
SmallerTypical 0.13 acBigger

Bigger than 86% of homes nearby

Year built1913
OlderTypical 1980Newer

Older than almost all homes nearby

How 407 Armstrong Rd ranks against every home in each area.
MeasureThis homeMiddle River 21220Baltimore County
Estimated valuepricier than$389,27564% of homes58% of homes
Price per ft²pricier than$32291% of homes90% of homes
Living areabigger than1,208 ft²38% of homes27% of homes
Lot sizebigger than0.37 ac86% of homes79% of homes
Year builtnewer than1913almost no homes2% of homes

About 407 Armstrong Rd

How much is 407 Armstrong Rd, Middle River, MD worth?

The TopHap Estimate for 407 Armstrong Rd, Middle River, MD is $389,275 as of Sep 24, 2026. The likely range is $373,197 to $405,353. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 407 Armstrong Rd, Middle River, MD last sell?

407 Armstrong Rd, Middle River, MD last sold on Dec 6, 2004, according to the county's recorded deed.

How big is 407 Armstrong Rd, Middle River, MD?

407 Armstrong Rd, Middle River, MD has 1 bathrooms, 1,208 square feet of living space and a 0.37-acre lot.

When was 407 Armstrong Rd, Middle River, MD built?

407 Armstrong Rd, Middle River, MD was built in 1913, making it 113 years old. It is a conventional home. The building has 1 story.

What schools serve 407 Armstrong Rd, Middle River, MD?

407 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 407 Armstrong Rd, Middle River, MD compare to other homes in Middle River 21220?

Among the 13,109 homes in Middle River 21220, it is worth more than 64% of them ($389,275 against a typical $333,563), its price per square foot is higher than 91% of them ($322 against a typical $216), it is bigger than 38% of them (1,208 ft² against a typical 1,422 ft²), its lot is bigger than 86% of them (0.37 ac against a typical 0.13 ac) and it is newer than almost none of them (1913 against a typical 1980). Measured against all of Baltimore County, it is worth more than 58% 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 407 Armstrong Rd, Middle River, MD?

The 2024 property tax bill for 407 Armstrong Rd, Middle River, MD was $5,182. The county assessed it at $358,533.

More homes on Armstrong Rd

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More homes in Middle River 21220

Assigned schools

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