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Single Family ResidenceResidential
$754,643$267 / 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

17451 MACDUFF AVE

OLNEY, MD 20832
3.5
Baths
2,822 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
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

$755K
$732K low$778K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,137 (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.$649,300 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$633,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$680,700

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.0.24
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
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 · 352 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
Cashell Elementary SchoolA-
Elementary · Grades PK–5 · 0.5 mi
H
Col. Zadok Magruder High SchoolC
High · Grades 9–12 · 2.0 mi
M
Redland Middle SchoolC-
Middle · Grades 6–8 · 2.5 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

17451 Macduff Ave 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 66% of homes in Olney 20832
  • Costs less per square foot than 68% of homes in Olney 20832
  • Bigger than 74% of homes in Montgomery County
  • Has a bigger lot than 70% 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
$246K$1.3M

This home is worth more than 66% 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$754,643
CheaperTypical $679,143Pricier

Pricier than 66% of homes nearby

Price per ft²$267
CheaperTypical $291Pricier

Pricier than 32% of homes nearby

Living area2,822 ft²
SmallerTypical 2,260 ft²Bigger

Bigger than 71% of homes nearby

Lot size0.25 ac
SmallerTypical 0.23 acBigger

Bigger than 54% of homes nearby

Year built1983
OlderTypical 1986Newer

Newer than 38% of homes nearby

How 17451 Macduff Ave ranks against every home in each area.
MeasureThis homeOlney 20832Montgomery County
Estimated valuepricier than$754,64366% of homes64% of homes
Price per ft²pricier than$26732% of homes33% of homes
Living areabigger than2,822 ft²71% of homes74% of homes
Lot sizebigger than0.25 ac54% of homes70% of homes
Year builtnewer than198338% of homes57% of homes

About 17451 Macduff Ave

How much is 17451 Macduff Ave, Olney, MD worth?

The TopHap Estimate for 17451 Macduff Ave, Olney, MD is $754,643 as of Aug 30, 2026. The likely range is $731,657 to $777,629. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 17451 Macduff Ave, Olney, MD last sell?

17451 Macduff Ave, Olney, MD last sold on Dec 6, 2023, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 17451 Macduff Ave, Olney, MD?

17451 Macduff Ave, Olney, MD has 3.5 bathrooms, 2,822 square feet of living space and a 0.24-acre lot.

When was 17451 Macduff Ave, Olney, MD built?

17451 Macduff Ave, Olney, MD was built in 1983, making it 43 years old. It is a bi-level home. The building has 2 stories.

What schools serve 17451 Macduff Ave, Olney, MD?

17451 Macduff Ave, Olney, MD is assigned to Cashell Elementary School (elementary), rated A-; Col. Zadok Magruder High School (high), rated C; Redland Middle School (middle), rated C-. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 17451 Macduff Ave, Olney, MD compare to other homes in Olney 20832?

Among the 8,619 homes in Olney 20832, it is worth more than 66% of them ($754,643 against a typical $679,143), its price per square foot is higher than 32% of them ($267 against a typical $291), it is bigger than 71% of them (2,822 ft² against a typical 2,260 ft²), its lot is bigger than 54% of them (0.25 ac against a typical 0.23 ac) and it is newer than 38% of them (1983 against a typical 1986). Measured against all of Montgomery County, it is worth more than 64% 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 17451 Macduff Ave, Olney, MD?

The 2025 property tax bill for 17451 Macduff Ave, Olney, MD was $7,137. The county assessed it at $649,300.

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