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TownhouseResidential
$417,195$372 / 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 95How 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

17308 SANDY KNOLL DR

OLNEY, MD 20832
1.5
Baths
1,122 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.
2,002 ft²
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$417K
$398K low$436K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$331,933 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$319,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$356,600

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.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.05
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Cashell Elementary SchoolA-
Elementary · Grades PK–5 · 0.3 mi
H
Col. Zadok Magruder High SchoolC
High · Grades 9–12 · 1.6 mi
M
Redland Middle SchoolC-
Middle · Grades 6–8 · 2.2 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

17308 Sandy Knoll 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 less than 88% of homes in Olney 20832
  • Costs more per square foot than 90% of homes in Olney 20832
  • Smaller than 94% of homes in Olney 20832
  • Has a smaller lot than 83% of homes in Olney 20832
  • Older than 70% of homes in Olney 20832

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
$254K$1.5M

This home is worth more than 12% 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$417,195
CheaperTypical $680,453Pricier

Pricier than 12% of homes nearby

Price per ft²$372
CheaperTypical $291Pricier

Pricier than 90% of homes nearby

Living area1,122 ft²
SmallerTypical 2,260 ft²Bigger

Bigger than 6% of homes nearby

Lot size2,002 ft²
SmallerTypical 0.23 acBigger

Bigger than 17% of homes nearby

Year built1980
OlderTypical 1986Newer

Newer than 30% of homes nearby

How 17308 Sandy Knoll Dr ranks against every home in each area.
MeasureThis homeOlney 20832Montgomery County
Estimated valuepricier than$417,19512% of homes21% of homes
Price per ft²pricier than$37290% of homes75% of homes
Living areabigger than1,122 ft²6% of homes12% of homes
Lot sizebigger than2,002 ft²17% of homes22% of homes
Year builtnewer than198030% of homes52% of homes

About 17308 Sandy Knoll Dr

How much is 17308 Sandy Knoll Dr, Olney, MD worth?

The TopHap Estimate for 17308 Sandy Knoll Dr, Olney, MD is $417,195 as of Aug 30, 2026. The likely range is $398,342 to $436,048. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 17308 Sandy Knoll Dr, Olney, MD last sell?

17308 Sandy Knoll Dr, Olney, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 17308 Sandy Knoll Dr, Olney, MD?

17308 Sandy Knoll Dr, Olney, MD has 1.5 bathrooms, 1,122 square feet of living space and a 0.05-acre lot.

When was 17308 Sandy Knoll Dr, Olney, MD built?

17308 Sandy Knoll Dr, Olney, MD was built in 1980, making it 46 years old. It is a townhouse home. The building has 2 stories.

What schools serve 17308 Sandy Knoll Dr, Olney, MD?

17308 Sandy Knoll Dr, 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 17308 Sandy Knoll Dr, Olney, MD compare to other homes in Olney 20832?

Among the 8,619 homes in Olney 20832, it is worth more than 12% of them ($417,195 against a typical $680,453), its price per square foot is higher than 90% of them ($372 against a typical $291), it is bigger than 6% of them (1,122 ft² against a typical 2,260 ft²), its lot is bigger than 17% of them (2,002 ft² against a typical 0.23 ac) and it is newer than 30% of them (1980 against a typical 1986). Measured against all of Montgomery County, it is worth more than 21% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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