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Single Family ResidenceResidential
$677,512$428 / 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 89How 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 $665,000 on Jan 21, 2026

405 ARMSTRONG RD

BALTIMORE, MD 21220
1
Baths
1,584 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.
1950
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

$678K
$603K low$752K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$665,000 · Jan 21, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,063 (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.$423,900 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$409,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$438,300

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.53
57
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
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.48%
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.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 · 264 ft²Shed · 288 ft²Porch · 336 ft²Boat access

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
Seneca Elementary SchoolD
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

405 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 93% of homes in Middle River 21220
  • Among the highest price per square foot in Middle River 21220
  • Has a bigger lot than 86% of homes in Middle River 21220
  • Older than 81% 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
$152K$844K

This home is worth more than 93% 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$677,512
CheaperTypical $333,152Pricier

Pricier than 93% of homes nearby

Price per ft²$428
CheaperTypical $215Pricier

Pricier than almost all homes nearby

Living area1,584 ft²
SmallerTypical 1,440 ft²Bigger

Bigger than 57% of homes nearby

Lot size0.37 ac
SmallerTypical 0.13 acBigger

Bigger than 86% of homes nearby

Year built1950
OlderTypical 1980Newer

Newer than 23% of homes nearby

How 405 Armstrong Rd ranks against every home in each area.
MeasureThis homeMiddle River 21220Baltimore County
Estimated valuepricier than$677,51293% of homes88% of homes
Price per ft²pricier than$428almost all homes98% of homes
Living areabigger than1,584 ft²57% of homes56% of homes
Lot sizebigger than0.37 ac86% of homes78% of homes
Year builtnewer than195023% of homes19% of homes

About 405 Armstrong Rd

How much is 405 Armstrong Rd, Baltimore, MD worth?

The TopHap Estimate for 405 Armstrong Rd, Baltimore, MD is $677,512 as of Sep 24, 2026. The likely range is $603,158 to $751,866. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 405 Armstrong Rd, Baltimore, MD last sell?

405 Armstrong Rd, Baltimore, MD last sold on Jan 21, 2026 for $665,000, according to the county's recorded deed.

How big is 405 Armstrong Rd, Baltimore, MD?

405 Armstrong Rd, Baltimore, MD has 1 bathrooms, 1,584 square feet of living space and a 0.37-acre lot.

When was 405 Armstrong Rd, Baltimore, MD built?

405 Armstrong Rd, Baltimore, MD was built in 1950, making it 76 years old. It is a conventional home. The building has 2 stories.

What schools serve 405 Armstrong Rd, Baltimore, MD?

405 Armstrong Rd, Baltimore, MD is assigned to Seneca Elementary School (elementary), rated D; 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 405 Armstrong Rd, Baltimore, MD compare to other homes in Middle River 21220?

Among the 13,117 homes in Middle River 21220, it is worth more than 93% of them ($677,512 against a typical $333,152), its price per square foot is higher than almost all of them ($428 against a typical $215), it is bigger than 57% of them (1,584 ft² against a typical 1,440 ft²), its lot is bigger than 86% of them (0.37 ac against a typical 0.13 ac) and it is newer than 23% of them (1950 against a typical 1980). Measured against all of Baltimore County, it is worth more than 88% 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 405 Armstrong Rd, Baltimore, MD?

The 2025 property tax bill for 405 Armstrong Rd, Baltimore, MD was $6,063. The county assessed it at $423,900.

Closest homes

More homes in Baltimore 21220

Assigned schools

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