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Single Family ResidenceResidential
$838,021$270 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $646,000 on May 27, 2015

21 OSKALOOSA CT

DERWOOD, MD 20855
3.5
Baths
3,108 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$838K
$811K low$865K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$646,000 · May 27, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,188 (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.$779,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$334,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$445,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$737,733
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$779,700

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.42 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.0.28
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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 · 168 ft²

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
College Gardens Elementary SchoolC-
Elementary · Grades PK–5 · 1.3 mi
H
Richard Montgomery High SchoolA-
High · Grades 9–12 · 2.4 mi
M
Julius West Middle SchoolA
Middle · Grades 6–8 · 2.8 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20855These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.42

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.6%
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.16,890
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,305 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,553
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,855
Average tempThe average temperature here across a full year.54°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

21 Oskaloosa Ct 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 80% of homes in Derwood 20855
  • Costs less per square foot than 66% of homes in Montgomery County
  • Bigger than 79% of homes in Montgomery County
  • Has a bigger lot than 76% of homes in Montgomery County

What homes are worth in Derwood 20855

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

This home
$317K$1.3M

This home is worth more than 80% of homes in Derwood 20855.

How it measures up in Derwood 20855

The dot is this home. The mark in the middle is the typical home in Derwood 20855.

Estimated value$838,021
CheaperTypical $648,745Pricier

Pricier than 80% of homes nearby

Price per ft²$270
CheaperTypical $281Pricier

Pricier than 41% of homes nearby

Living area3,108 ft²
SmallerTypical 2,292 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.28 ac
SmallerTypical 0.33 acBigger

Bigger than 45% of homes nearby

Year built1985
OlderTypical 1983Newer

Newer than 64% of homes nearby

How 21 Oskaloosa Ct ranks against every home in each area.
MeasureThis homeDerwood 20855Montgomery County
Estimated valuepricier than$838,02180% of homes70% of homes
Price per ft²pricier than$27041% of homes34% of homes
Living areabigger than3,108 ft²77% of homes79% of homes
Lot sizebigger than0.28 ac45% of homes76% of homes
Year builtnewer than198564% of homes63% of homes

About 21 Oskaloosa Ct

How much is 21 Oskaloosa Ct, Derwood, MD worth?

The TopHap Estimate for 21 Oskaloosa Ct, Derwood, MD is $838,021 as of Aug 30, 2026. The likely range is $811,193 to $864,849. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Oskaloosa Ct, Derwood, MD last sell?

21 Oskaloosa Ct, Derwood, MD last sold on May 27, 2015 for $646,000, according to the county's recorded deed.

How big is 21 Oskaloosa Ct, Derwood, MD?

21 Oskaloosa Ct, Derwood, MD has 3.5 bathrooms, 3,108 square feet of living space and a 0.28-acre lot.

When was 21 Oskaloosa Ct, Derwood, MD built?

21 Oskaloosa Ct, Derwood, MD was built in 1985, making it 41 years old. It is a bi-level home. The building has 2 stories.

What schools serve 21 Oskaloosa Ct, Derwood, MD?

21 Oskaloosa Ct, Derwood, MD is assigned to College Gardens Elementary School (elementary), rated C-; Richard Montgomery High School (high), rated A-; Julius West Middle School (middle), rated A. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Oskaloosa Ct, Derwood, MD compare to other homes in Derwood 20855?

Among the 5,812 homes in Derwood 20855, it is worth more than 80% of them ($838,021 against a typical $648,745), its price per square foot is higher than 41% of them ($270 against a typical $281), it is bigger than 77% of them (3,108 ft² against a typical 2,292 ft²), its lot is bigger than 45% of them (0.28 ac against a typical 0.33 ac) and it is newer than 64% of them (1985 against a typical 1983). Measured against all of Montgomery County, it is worth more than 70% 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 21 Oskaloosa Ct, Derwood, MD?

The 2025 property tax bill for 21 Oskaloosa Ct, Derwood, MD was $9,188. The county assessed it at $779,700.

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