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Single Family ResidenceResidential
$2,467,463$488 / 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 Jul 14, 2026
Last sold for $450,000 on Jul 21, 1992

4100 ROSEMARY ST

CHEVY CHASE, MD 20815
5.5
Baths
5,056 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.
0.32 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$2.5M
$2.2M low$2.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$450,000 · Jul 21, 1992
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$1,867,463
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$1,493,970
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.26%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$600,000
WFB NA · recorded Mar 27, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$21,261 (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.$1,873,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$951,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$922,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,722,467
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,873,800

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.9
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
29
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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.Bi-Level
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.32
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)
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 305 ft²

Transaction History(2)

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 · 0.8 mi
E
Rosemary Hills Elementary School
Elementary · Grades PK–2 · 2.5 mi
M
Silver Creek Middle SchoolB+
Middle · Grades 6–8 · 2.7 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.$188,905
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$263,300
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

4100 Rosemary 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 98% of homes in Montgomery County
  • Costs more per square foot than 92% of homes in Montgomery County
  • Bigger than 94% of homes in Montgomery County
  • Has a bigger lot than 94% of homes in Chevy Chase
  • Among the oldest 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
$194K$4M

This home is worth more than 86% 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$2,467,463
CheaperTypical $1,434,823Pricier

Pricier than 86% of homes nearby

Price per ft²$488
CheaperTypical $555Pricier

Pricier than 35% of homes nearby

Living area5,056 ft²
SmallerTypical 2,368 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.32 ac
SmallerTypical 0.16 acBigger

Bigger than 89% of homes nearby

Year built1923
OlderTypical 1955Newer

Newer than 8% of homes nearby

How 4100 Rosemary St ranks against every home in each area.
MeasureThis homeChevy ChaseChevy Chase 20815Montgomery County
Estimated valuepricier than$2,467,46379% of homes86% of homes98% of homes
Price per ft²pricier than$48815% of homes35% of homes92% of homes
Living areabigger than5,056 ft²90% of homes91% of homes94% of homes
Lot sizebigger than0.32 ac94% of homes89% of homes79% of homes
Year builtnewer than192322% of homes8% of homesalmost no homes

About 4100 Rosemary St

How much is 4100 Rosemary St, Chevy Chase, MD worth?

The TopHap Estimate for 4100 Rosemary St, Chevy Chase, MD is $2,467,463 as of Jul 14, 2026. The likely range is $2,200,395 to $2,734,531. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4100 Rosemary St, Chevy Chase, MD last sell?

4100 Rosemary St, Chevy Chase, MD last sold on Jul 21, 1992 for $450,000, according to the county's recorded deed.

How big is 4100 Rosemary St, Chevy Chase, MD?

4100 Rosemary St, Chevy Chase, MD has 5.5 bathrooms, 5,056 square feet of living space and a 0.32-acre lot.

When was 4100 Rosemary St, Chevy Chase, MD built?

4100 Rosemary St, Chevy Chase, MD was built in 1923, making it 103 years old. It is a bi-level home. The building has 2 stories.

What schools serve 4100 Rosemary St, Chevy Chase, MD?

4100 Rosemary 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 4100 Rosemary St, Chevy Chase, MD compare to other homes in Chevy Chase 20815?

Among the 10,587 homes in Chevy Chase 20815, it is worth more than 86% of them ($2,467,463 against a typical $1,434,823), its price per square foot is higher than 35% of them ($488 against a typical $555), it is bigger than 91% of them (5,056 ft² against a typical 2,368 ft²), its lot is bigger than 89% of them (0.32 ac against a typical 0.16 ac) and it is newer than 8% of them (1923 against a typical 1955). Measured against all of Montgomery County, it is worth more than 98% 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 4100 Rosemary St, Chevy Chase, MD?

The 2025 property tax bill for 4100 Rosemary St, Chevy Chase, MD was $21,261. The county assessed it at $1,873,800.

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