Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,266,114$439 / 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 85How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jun 23, 2026
Last sold for $443,000 on Apr 29, 1994

8521 RIVER ROCK TER

BETHESDA, MD 20817
3
Baths
2,887 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1977
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

$1.3M
$1.1M low$1.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$443,000 · Apr 29, 1994
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$1,054,679
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$843,743
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.17%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$211,435
INTERFIRST MORTGAGE COMPANY · recorded Dec 16, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,353 (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.$1,035,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$566,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$468,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$934,233
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,035,000

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.0.29
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 · 720 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Bannockburn Elementary SchoolA+
Elementary · Grades KG–5 · 2.0 mi
M
Thomas W. Pyle Middle SchoolA+
Middle · Grades 6–8 · 2.5 mi
H
Walt Whitman High SchoolA
High · Grades 9–12 · 2.6 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20817These 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.55
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 100.38

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
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.40,313
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,841 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$210,780
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$275,491
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

8521 River Rock Ter 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 87% of homes in Montgomery County
  • Costs more per square foot than 87% of homes in Montgomery County
  • Bigger than 76% of homes in Montgomery County
  • Has a bigger lot than 76% of homes in Montgomery County

What homes are worth in Bethesda 20817

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

This home
$256K$3.5M

This home is worth more than 46% of homes in Bethesda 20817.

How it measures up in Bethesda 20817

The dot is this home. The mark in the middle is the typical home in Bethesda 20817.

Estimated value$1,266,114
CheaperTypical $1,324,661Pricier

Pricier than 46% of homes nearby

Price per ft²$439
CheaperTypical $430Pricier

Pricier than 53% of homes nearby

Living area2,887 ft²
SmallerTypical 2,792 ft²Bigger

Bigger than 53% of homes nearby

Lot size0.29 ac
SmallerTypical 0.22 acBigger

Bigger than 66% of homes nearby

Year built1977
OlderTypical 1964Newer

Newer than 64% of homes nearby

How 8521 River Rock Ter ranks against every home in each area.
MeasureThis homeBethesda 20817Montgomery County
Estimated valuepricier than$1,266,11446% of homes87% of homes
Price per ft²pricier than$43953% of homes87% of homes
Living areabigger than2,887 ft²53% of homes76% of homes
Lot sizebigger than0.29 ac66% of homes76% of homes
Year builtnewer than197764% of homes48% of homes

About 8521 River Rock Ter

How much is 8521 River Rock Ter, Bethesda, MD worth?

The TopHap Estimate for 8521 River Rock Ter, Bethesda, MD is $1,266,114 as of Jun 23, 2026. The likely range is $1,076,196 to $1,456,031. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8521 River Rock Ter, Bethesda, MD last sell?

8521 River Rock Ter, Bethesda, MD last sold on Apr 29, 1994 for $443,000, according to the county's recorded deed.

How big is 8521 River Rock Ter, Bethesda, MD?

8521 River Rock Ter, Bethesda, MD has 3 bathrooms, 2,887 square feet of living space and a 0.29-acre lot.

When was 8521 River Rock Ter, Bethesda, MD built?

8521 River Rock Ter, Bethesda, MD was built in 1977, making it 49 years old. It is a bi-level home. The building has 2 stories.

What schools serve 8521 River Rock Ter, Bethesda, MD?

8521 River Rock Ter, Bethesda, MD is assigned to Bannockburn Elementary School (elementary), rated A+; Thomas W. Pyle Middle School (middle), rated A+; Walt Whitman High School (high), rated A. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8521 River Rock Ter, Bethesda, MD compare to other homes in Bethesda 20817?

Among the 13,833 homes in Bethesda 20817, it is worth more than 46% of them ($1,266,114 against a typical $1,324,661), its price per square foot is higher than 53% of them ($439 against a typical $430), it is bigger than 53% of them (2,887 ft² against a typical 2,792 ft²), its lot is bigger than 66% of them (0.29 ac against a typical 0.22 ac) and it is newer than 64% of them (1977 against a typical 1964). Measured against all of Montgomery County, it is worth more than 87% 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 8521 River Rock Ter, Bethesda, MD?

The 2025 property tax bill for 8521 River Rock Ter, Bethesda, MD was $11,353. The county assessed it at $1,035,000.

More homes on River Rock Ter

Closest homes

More homes in Bethesda 20817

Assigned schools

Explore the area

See this home in context

Open 8521 River Rock Ter on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map