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Single Family ResidenceResidential
$2,027,896$749 / 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 Sep 24, 2026
Last sold for $1,180,000 on Nov 21, 2019

3409 THORNAPPLE ST

CHEVY CHASE, MD 20815
2.5
Baths
2,707 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1936
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$2M
$1.8M low$2.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,180,000 · Nov 21, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,408 (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.$1,346,000 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,315,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,406,400

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.0.18
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.Slate
HeatingThe type of heating system in the home.Radiant
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 140 ft²Patio · 370 ft²Porch · 196 ft²

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.

H
Bethesda - Chevy Chase High SchoolA-
High · Grades 9–12 · 1.1 mi
E
Rosemary Hills Elementary School
Elementary · Grades PK–2 · 1.8 mi
M
Silver Creek Middle SchoolB+
Middle · Grades 6–8 · 2.3 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20815These 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.93
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.32,509
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,920 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$188,904
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$263,298
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

3409 Thornapple 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.

  • Worth more than 97% of homes in Montgomery County
  • Among the highest price per square foot in Montgomery County
  • Bigger than 72% of homes in Montgomery County
  • Older than 97% of homes in Montgomery County

What homes are worth in Chevy Chase 20815

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

This home
$200K$4M

This home is worth more than 75% of homes in Chevy Chase 20815.

How it measures up in Chevy Chase 20815

The dot is this home. The mark in the middle is the typical home in Chevy Chase 20815.

Estimated value$2,027,896
CheaperTypical $1,468,349Pricier

Pricier than 75% of homes nearby

Price per ft²$749
CheaperTypical $558Pricier

Pricier than 85% of homes nearby

Living area2,707 ft²
SmallerTypical 2,385 ft²Bigger

Bigger than 59% of homes nearby

Lot size0.18 ac
SmallerTypical 0.16 acBigger

Bigger than 61% of homes nearby

Year built1936
OlderTypical 1955Newer

Newer than 21% of homes nearby

How 3409 Thornapple St ranks against every home in each area.
MeasureThis homeChevy Chase 20815Montgomery County
Estimated valuepricier than$2,027,89675% of homes97% of homes
Price per ft²pricier than$74985% of homesalmost all homes
Living areabigger than2,707 ft²59% of homes72% of homes
Lot sizebigger than0.18 ac61% of homes57% of homes
Year builtnewer than193621% of homes3% of homes

About 3409 Thornapple St

How much is 3409 Thornapple St, Chevy Chase, MD worth?

The TopHap Estimate for 3409 Thornapple St, Chevy Chase, MD is $2,027,896 as of Sep 24, 2026. The likely range is $1,818,972 to $2,236,820. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3409 Thornapple St, Chevy Chase, MD last sell?

3409 Thornapple St, Chevy Chase, MD last sold on Nov 21, 2019 for $1,180,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3409 Thornapple St, Chevy Chase, MD?

3409 Thornapple St, Chevy Chase, MD has 2.5 bathrooms, 2,707 square feet of living space and a 0.18-acre lot.

When was 3409 Thornapple St, Chevy Chase, MD built?

3409 Thornapple St, Chevy Chase, MD was built in 1936, making it 90 years old. It is a bi-level home. The building has 2 stories.

What schools serve 3409 Thornapple St, Chevy Chase, MD?

3409 Thornapple St, Chevy Chase, MD is assigned to Bethesda - Chevy Chase High School (high), rated A-; Rosemary Hills Elementary School (elementary); Silver Creek 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 3409 Thornapple St, Chevy Chase, MD compare to other homes in Chevy Chase 20815?

Among the 10,593 homes in Chevy Chase 20815, it is worth more than 75% of them ($2,027,896 against a typical $1,468,349), its price per square foot is higher than 85% of them ($749 against a typical $558), it is bigger than 59% of them (2,707 ft² against a typical 2,385 ft²), its lot is bigger than 61% of them (0.18 ac against a typical 0.16 ac) and it is newer than 21% of them (1936 against a typical 1955). Measured against all of Montgomery County, it is worth more than 97% 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 3409 Thornapple St, Chevy Chase, MD?

The 2025 property tax bill for 3409 Thornapple St, Chevy Chase, MD was $15,408. The county assessed it at $1,346,000.

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