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Single Family ResidenceResidential
$742,176$314 / 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 Oct 21, 2026
Last sold for $135,000 on Sep 22, 1997

3504 JOHN CARROLL DR

OLNEY, MD 20832
2.5
Baths
2,364 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
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

$742K
$703K low$781K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$135,000 · Sep 22, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,938 (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.$656,667 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$602,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$765,200

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.0.50
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood 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 · 450 ft²Porch · 140 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.

E
Olney Elementary SchoolA-
Elementary · Grades KG–5 · 0.3 mi
M
Rosa M. Parks Middle SchoolA-
Middle · Grades 6–8 · 1.9 mi
H
Sherwod High SchoolB
High · Grades 9–12 · 2.8 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%

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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

3504 John Carroll 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 65% of homes in Olney 20832
  • Costs more per square foot than 68% of homes in Olney 20832
  • Has a bigger lot than 91% of homes in Olney 20832
  • Newer than 66% 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
$232K$1.4M

This home is worth more than 65% 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$742,176
CheaperTypical $671,171Pricier

Pricier than 65% of homes nearby

Price per ft²$314
CheaperTypical $289Pricier

Pricier than 68% of homes nearby

Living area2,364 ft²
SmallerTypical 2,261 ft²Bigger

Bigger than 56% of homes nearby

Lot size0.5 ac
SmallerTypical 0.23 acBigger

Bigger than 91% of homes nearby

Year built1986
OlderTypical 1986Newer

Newer than 52% of homes nearby

How 3504 John Carroll Dr ranks against every home in each area.
MeasureThis homeOlney 20832Montgomery County
Estimated valuepricier than$742,17665% of homes63% of homes
Price per ft²pricier than$31468% of homes55% of homes
Living areabigger than2,364 ft²56% of homes62% of homes
Lot sizebigger than0.5 ac91% of homes89% of homes
Year builtnewer than198652% of homes66% of homes

About 3504 John Carroll Dr

How much is 3504 John Carroll Dr, Olney, MD worth?

The TopHap Estimate for 3504 John Carroll Dr, Olney, MD is $742,176 as of Oct 21, 2026. The likely range is $703,143 to $781,209. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3504 John Carroll Dr, Olney, MD last sell?

3504 John Carroll Dr, Olney, MD last sold on Sep 22, 1997 for $135,000, according to the county's recorded deed.

How big is 3504 John Carroll Dr, Olney, MD?

3504 John Carroll Dr, Olney, MD has 2.5 bathrooms, 2,364 square feet of living space and a 0.50-acre lot.

When was 3504 John Carroll Dr, Olney, MD built?

3504 John Carroll Dr, Olney, MD was built in 1986, making it 40 years old. It is a bi-level home. The building has 2 stories.

What schools serve 3504 John Carroll Dr, Olney, MD?

3504 John Carroll 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 3504 John Carroll Dr, Olney, MD compare to other homes in Olney 20832?

Among the 8,619 homes in Olney 20832, it is worth more than 65% of them ($742,176 against a typical $671,171), its price per square foot is higher than 68% of them ($314 against a typical $289), it is bigger than 56% of them (2,364 ft² against a typical 2,261 ft²), its lot is bigger than 91% of them (0.5 ac against a typical 0.23 ac) and it is newer than 52% of them (1986 against a typical 1986). Measured against all of Montgomery County, it is worth more than 63% 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 3504 John Carroll Dr, Olney, MD?

The 2025 property tax bill for 3504 John Carroll Dr, Olney, MD was $6,938. The county assessed it at $656,667.

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