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Single Family ResidenceResidential
$714,267$360 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

4520 VALLEY FORGE DR

ROCKVILLE, MD 20853
2.5
Baths
1,984 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
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

$714K
$684K low$745K high
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.$528,267
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$422,614
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.27%
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.$36,000
CHEVY CHASE SAVINGS BANK · E · recorded Feb 9, 2007
2nd 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.$150,000
CHEVY CHASE SAVINGS BANK

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,907 (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.$522,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$237,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$284,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$495,067
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$522,200

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.0.35
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 · 280 ft²Porch · 48 ft²

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 · 0.4 mi
H
Col. Zadok Magruder High SchoolC
High · Grades 9–12 · 1.4 mi
M
Redland Middle SchoolC-
Middle · Grades 6–8 · 2.2 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20853These 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.60
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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
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.30,497
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,373 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,074
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,691
Average tempThe average temperature here across a full year.54°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

4520 Valley Forge 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 66% of homes in Rockville 20853
  • Costs more per square foot than 84% of homes in Rockville 20853
  • Has a bigger lot than 82% of homes in Montgomery County
  • Newer than 82% of homes in Rockville 20853

What homes are worth in Rockville 20853

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

This home
$239K$1.2M

This home is worth more than 66% of homes in Rockville 20853.

How it measures up in Rockville 20853

The dot is this home. The mark in the middle is the typical home in Rockville 20853.

Estimated value$714,267
CheaperTypical $641,524Pricier

Pricier than 66% of homes nearby

Price per ft²$360
CheaperTypical $309Pricier

Pricier than 84% of homes nearby

Living area1,984 ft²
SmallerTypical 2,032 ft²Bigger

Bigger than 47% of homes nearby

Lot size0.35 ac
SmallerTypical 0.23 acBigger

Bigger than 73% of homes nearby

Year built1971
OlderTypical 1965Newer

Newer than 82% of homes nearby

How 4520 Valley Forge Dr ranks against every home in each area.
MeasureThis homeRockville 20853Montgomery County
Estimated valuepricier than$714,26766% of homes59% of homes
Price per ft²pricier than$36084% of homes71% of homes
Living areabigger than1,984 ft²47% of homes50% of homes
Lot sizebigger than0.35 ac73% of homes82% of homes
Year builtnewer than197182% of homes40% of homes

About 4520 Valley Forge Dr

How much is 4520 Valley Forge Dr, Rockville, MD worth?

The TopHap Estimate for 4520 Valley Forge Dr, Rockville, MD is $714,267 as of Jul 14, 2026. The likely range is $684,007 to $744,527. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4520 Valley Forge Dr, Rockville, MD last sell?

4520 Valley Forge Dr, Rockville, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4520 Valley Forge Dr, Rockville, MD?

4520 Valley Forge Dr, Rockville, MD has 2.5 bathrooms, 1,984 square feet of living space and a 0.35-acre lot.

When was 4520 Valley Forge Dr, Rockville, MD built?

4520 Valley Forge Dr, Rockville, MD was built in 1971, making it 55 years old. It is a bi-level home. The building has 2 stories.

What schools serve 4520 Valley Forge Dr, Rockville, MD?

4520 Valley Forge Dr, Rockville, 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 4520 Valley Forge Dr, Rockville, MD compare to other homes in Rockville 20853?

Among the 9,292 homes in Rockville 20853, it is worth more than 66% of them ($714,267 against a typical $641,524), its price per square foot is higher than 84% of them ($360 against a typical $309), it is bigger than 47% of them (1,984 ft² against a typical 2,032 ft²), its lot is bigger than 73% of them (0.35 ac against a typical 0.23 ac) and it is newer than 82% of them (1971 against a typical 1965). Measured against all of Montgomery County, it is worth more than 59% 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 4520 Valley Forge Dr, Rockville, MD?

The 2025 property tax bill for 4520 Valley Forge Dr, Rockville, MD was $4,907. The county assessed it at $522,200.

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