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Single Family ResidenceResidential
$868,633$277 / 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 94How 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 $650,000 on Jul 28, 2020

18133 DARNELL DR

OLNEY, MD 20832
3.5
Baths
3,132 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$869K
$817K low$920K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$650,000 · Jul 28, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,191 (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.$742,633 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$725,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$777,500

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.22 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.0.23
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 144 ft²Porch · 220 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.

E
Olney Elementary SchoolA-
Elementary · Grades KG–5 · 1.1 mi
M
Rosa M. Parks Middle SchoolA-
Middle · Grades 6–8 · 1.3 mi
H
Sherwod High SchoolB
High · Grades 9–12 · 3.7 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20832These 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.48
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
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.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.3.8%
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.24,644
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,442 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$162,184
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$179,554
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%

Owner Tools

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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

18133 Darnell Dr 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 83% of homes in Olney 20832
  • Bigger than 80% of homes in Montgomery County
  • Has a bigger lot than 67% of homes in Montgomery County
  • Newer than 69% of homes in Montgomery County

What homes are worth in Olney 20832

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

This home
$258K$1.4M

This home is worth more than 83% of homes in Olney 20832.

How it measures up in Olney 20832

The dot is this home. The mark in the middle is the typical home in Olney 20832.

Estimated value$868,633
CheaperTypical $674,233Pricier

Pricier than 83% of homes nearby

Price per ft²$277
CheaperTypical $292Pricier

Pricier than 39% of homes nearby

Living area3,132 ft²
SmallerTypical 2,264 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.23 ac
SmallerTypical 0.23 acBigger

Bigger than 50% of homes nearby

Year built1987
OlderTypical 1986Newer

Newer than 61% of homes nearby

How 18133 Darnell Dr ranks against every home in each area.
MeasureThis homeOlney 20832Montgomery County
Estimated valuepricier than$868,63383% of homes72% of homes
Price per ft²pricier than$27739% of homes37% of homes
Living areabigger than3,132 ft²78% of homes80% of homes
Lot sizebigger than0.23 ac50% of homes67% of homes
Year builtnewer than198761% of homes69% of homes

About 18133 Darnell Dr

How much is 18133 Darnell Dr, Olney, MD worth?

The TopHap Estimate for 18133 Darnell Dr, Olney, MD is $868,633 as of Sep 24, 2026. The likely range is $817,264 to $920,002. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18133 Darnell Dr, Olney, MD last sell?

18133 Darnell Dr, Olney, MD last sold on Jul 28, 2020 for $650,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18133 Darnell Dr, Olney, MD?

18133 Darnell Dr, Olney, MD has 3.5 bathrooms, 3,132 square feet of living space and a 0.23-acre lot.

When was 18133 Darnell Dr, Olney, MD built?

18133 Darnell Dr, Olney, MD was built in 1987, making it 39 years old. It is a bi-level home. The building has 2 stories.

What schools serve 18133 Darnell Dr, Olney, MD?

18133 Darnell Dr, Olney, MD is assigned to Olney Elementary School (elementary), rated A-; Rosa M. Parks Middle School (middle), rated A-; Sherwod High School (high), rated B. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18133 Darnell Dr, Olney, MD compare to other homes in Olney 20832?

Among the 8,619 homes in Olney 20832, it is worth more than 83% of them ($868,633 against a typical $674,233), its price per square foot is higher than 39% of them ($277 against a typical $292), it is bigger than 78% of them (3,132 ft² against a typical 2,264 ft²), its lot is bigger than 50% of them (0.23 ac against a typical 0.23 ac) and it is newer than 61% of them (1987 against a typical 1986). Measured against all of Montgomery County, it is worth more than 72% 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 18133 Darnell Dr, Olney, MD?

The 2025 property tax bill for 18133 Darnell Dr, Olney, MD was $8,191. The county assessed it at $742,633.

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