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Single Family ResidenceResidential
$550,882$350 / 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 91How 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 $158,000 on Jan 15, 1997

401 IRWIN ST

SILVER SPRING, MD 20901
2.5
Baths
1,572 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$551K
$503K low$599K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$158,000 · Jan 15, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,201 (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.$474,067 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$467,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$487,000

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.Bi-Level
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.14
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Forest Knolls Elementary SchoolB+
Elementary · Grades PK–5 · 0.1 mi
H
Northwood High SchoolB
High · Grades 9–12 · 0.3 mi
M
Silver Spring International Middle SchoolB
Middle · Grades 6–8 · 2.2 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20901These 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.85
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.35

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.4%
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.37,269
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,931 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$131,433
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$160,311
Average tempThe average temperature here across a full year.55°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

401 Irwin St 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 70% of homes in Silver Spring 20901
  • Smaller than 68% of homes in Montgomery County
  • Has a smaller lot than 69% of homes in Silver Spring 20901
  • Newer than 76% of homes in Silver Spring 20901

What homes are worth in Silver Spring 20901

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

This home
$212K$932K

This home is worth more than 41% of homes in Silver Spring 20901.

How it measures up in Silver Spring 20901

The dot is this home. The mark in the middle is the typical home in Silver Spring 20901.

Estimated value$550,882
CheaperTypical $580,667Pricier

Pricier than 41% of homes nearby

Price per ft²$350
CheaperTypical $321Pricier

Pricier than 70% of homes nearby

Living area1,572 ft²
SmallerTypical 1,796 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.14 ac
SmallerTypical 0.16 acBigger

Bigger than 31% of homes nearby

Year built1960
OlderTypical 1952Newer

Newer than 76% of homes nearby

How 401 Irwin St ranks against every home in each area.
MeasureThis homeSilver Spring 20901Montgomery County
Estimated valuepricier than$550,88241% of homes39% of homes
Price per ft²pricier than$35070% of homes69% of homes
Living areabigger than1,572 ft²33% of homes32% of homes
Lot sizebigger than0.14 ac31% of homes42% of homes
Year builtnewer than196076% of homes24% of homes

About 401 Irwin St

How much is 401 Irwin St, Silver Spring, MD worth?

The TopHap Estimate for 401 Irwin St, Silver Spring, MD is $550,882 as of Sep 24, 2026. The likely range is $502,677 to $599,087. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 401 Irwin St, Silver Spring, MD last sell?

401 Irwin St, Silver Spring, MD last sold on Jan 15, 1997 for $158,000, according to the county's recorded deed.

How big is 401 Irwin St, Silver Spring, MD?

401 Irwin St, Silver Spring, MD has 2.5 bathrooms, 1,572 square feet of living space and a 0.14-acre lot.

When was 401 Irwin St, Silver Spring, MD built?

401 Irwin St, Silver Spring, MD was built in 1960, making it 66 years old. It is a bi-level home. The building has 2 stories.

What schools serve 401 Irwin St, Silver Spring, MD?

401 Irwin St, Silver Spring, MD is assigned to Forest Knolls Elementary School (elementary), rated B+; Northwood High School (high), rated B; Silver Spring International Middle School (middle), rated B. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 401 Irwin St, Silver Spring, MD compare to other homes in Silver Spring 20901?

Among the 10,023 homes in Silver Spring 20901, it is worth more than 41% of them ($550,882 against a typical $580,667), its price per square foot is higher than 70% of them ($350 against a typical $321), it is bigger than 33% of them (1,572 ft² against a typical 1,796 ft²), its lot is bigger than 31% of them (0.14 ac against a typical 0.16 ac) and it is newer than 76% of them (1960 against a typical 1952). Measured against all of Montgomery County, it is worth more than 39% 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 Irwin St, Silver Spring, MD?

The 2025 property tax bill for 401 Irwin St, Silver Spring, MD was $6,201. The county assessed it at $474,067.

More homes on Irwin St

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More homes in Silver Spring 20901

Assigned schools

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