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Single Family ResidenceResidential
$592,470$304 / 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
Last sold for $435,000 on Oct 30, 2017

406 IRWIN ST

SILVER SPRING, MD 20901
3
Baths
1,947 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.
1961
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$592K
$567K low$618K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$435,000 · Oct 30, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,955 (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.$513,833 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$506,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$528,900

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
ConstructionThe main material the home's frame and walls are built from.Brick
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.No

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
Forest Knolls Elementary SchoolB+
Elementary · Grades PK–5 · 0.2 mi
H
Northwood High SchoolB
High · Grades 9–12 · 0.4 mi
M
Silver Spring International Middle SchoolB
Middle · Grades 6–8 · 2.1 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

406 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.

  • Has a smaller lot than 69% of homes in Silver Spring 20901
  • Newer than 78% 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$924K

This home is worth more than 54% 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$592,470
CheaperTypical $580,379Pricier

Pricier than 54% of homes nearby

Price per ft²$304
CheaperTypical $320Pricier

Pricier than 39% of homes nearby

Living area1,947 ft²
SmallerTypical 1,800 ft²Bigger

Bigger than 62% of homes nearby

Lot size0.14 ac
SmallerTypical 0.16 acBigger

Bigger than 31% of homes nearby

Year built1961
OlderTypical 1952Newer

Newer than 78% of homes nearby

How 406 Irwin St ranks against every home in each area.
MeasureThis homeSilver Spring 20901Montgomery County
Estimated valuepricier than$592,47054% of homes45% of homes
Price per ft²pricier than$30439% of homes50% of homes
Living areabigger than1,947 ft²62% of homes48% of homes
Lot sizebigger than0.14 ac31% of homes42% of homes
Year builtnewer than196178% of homes25% of homes

About 406 Irwin St

How much is 406 Irwin St, Silver Spring, MD worth?

The TopHap Estimate for 406 Irwin St, Silver Spring, MD is $592,470 as of Sep 24, 2026. The likely range is $566,832 to $618,108. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 406 Irwin St, Silver Spring, MD last sell?

406 Irwin St, Silver Spring, MD last sold on Oct 30, 2017 for $435,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 406 Irwin St, Silver Spring, MD?

406 Irwin St, Silver Spring, MD has 3 bathrooms, 1,947 square feet of living space and a 0.14-acre lot.

When was 406 Irwin St, Silver Spring, MD built?

406 Irwin St, Silver Spring, MD was built in 1961, making it 65 years old. It is a bi-level home. The building has 2 stories.

What schools serve 406 Irwin St, Silver Spring, MD?

406 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 406 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 54% of them ($592,470 against a typical $580,379), its price per square foot is higher than 39% of them ($304 against a typical $320), it is bigger than 62% of them (1,947 ft² against a typical 1,800 ft²), its lot is bigger than 31% of them (0.14 ac against a typical 0.16 ac) and it is newer than 78% of them (1961 against a typical 1952). Measured against all of Montgomery County, it is worth more than 45% 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 406 Irwin St, Silver Spring, MD?

The 2025 property tax bill for 406 Irwin St, Silver Spring, MD was $5,955. The county assessed it at $513,833.

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Assigned schools

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