Skip to content
Skip to content
TopHapOpen in map
TownhouseResidential
$350,595$269 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $292,000 on Mar 5, 2014

509 CASEY LN

ROCKVILLE, MD 20850
1.5
Baths
1,302 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.
836 ft²
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$351K
$325K low$376K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$292,000 · Mar 5, 2014

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,837 (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.$408,867 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$386,133
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$431,600

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.0.02
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
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 · 94 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.

Foreclosure Filings(3)

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

M
Julius West Middle SchoolB+
Middle · Grades 6–8 · 2.0 mi
E
Ritchie Park Elementary SchoolA+
Elementary · Grades KG–5 · 2.5 mi
H
Richard Montgomery High SchoolB
High · Grades 9–12 · 2.7 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20850These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.51,693
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,703 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,425
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,183
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%

Owner Tools

Do you own this home?
Claim this home

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

509 Casey Ln 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 93% of homes in Rockville
  • Costs less per square foot than 90% of homes in Rockville
  • Smaller than 80% of homes in Rockville 20850
  • Has a smaller lot than 95% of homes in Montgomery County
  • Newer than 89% of homes in Montgomery County

What homes are worth in Rockville 20850

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

This home
$201K$1.7M

This home is worth more than 9% of homes in Rockville 20850.

How it measures up in Rockville 20850

The dot is this home. The mark in the middle is the typical home in Rockville 20850.

Estimated value$350,595
CheaperTypical $754,631Pricier

Pricier than 9% of homes nearby

Price per ft²$269
CheaperTypical $340Pricier

Pricier than 14% of homes nearby

Living area1,302 ft²
SmallerTypical 2,038 ft²Bigger

Bigger than 20% of homes nearby

Lot size836 ft²
SmallerTypical 4,138 ft²Bigger

Bigger than 9% of homes nearby

Year built2003
OlderTypical 1991Newer

Newer than 85% of homes nearby

How 509 Casey Ln ranks against every home in each area.
MeasureThis homeRockvilleRockville 20850Montgomery County
Estimated valuepricier than$350,5957% of homes9% of homes13% of homes
Price per ft²pricier than$26910% of homes14% of homes33% of homes
Living areabigger than1,302 ft²23% of homes20% of homes21% of homes
Lot sizebigger than836 ft²7% of homes9% of homes5% of homes
Year builtnewer than200388% of homes85% of homes89% of homes

About 509 Casey Ln

How much is 509 Casey Ln, Rockville, MD worth?

The TopHap Estimate for 509 Casey Ln, Rockville, MD is $350,595 as of Sep 24, 2026. The likely range is $324,965 to $376,225. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Casey Ln, Rockville, MD last sell?

509 Casey Ln, Rockville, MD last sold on Mar 5, 2014 for $292,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 509 Casey Ln, Rockville, MD?

509 Casey Ln, Rockville, MD has 1.5 bathrooms, 1,302 square feet of living space and a 0.02-acre lot.

When was 509 Casey Ln, Rockville, MD built?

509 Casey Ln, Rockville, MD was built in 2003, making it 23 years old. It is a townhouse home. The building has 3 stories.

What schools serve 509 Casey Ln, Rockville, MD?

509 Casey Ln, Rockville, MD is assigned to Julius West Middle School (middle), rated B+; Ritchie Park Elementary School (elementary), rated A+; Richard Montgomery 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 509 Casey Ln, Rockville, MD compare to other homes in Rockville 20850?

Among the 14,094 homes in Rockville 20850, it is worth more than 9% of them ($350,595 against a typical $754,631), its price per square foot is higher than 14% of them ($269 against a typical $340), it is bigger than 20% of them (1,302 ft² against a typical 2,038 ft²), its lot is bigger than 9% of them (836 ft² against a typical 4,138 ft²) and it is newer than 85% of them (2003 against a typical 1991). Measured against all of Montgomery County, it is worth more than 13% 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 509 Casey Ln, Rockville, MD?

The 2025 property tax bill for 509 Casey Ln, Rockville, MD was $5,837. The county assessed it at $408,867.

More homes on Casey Ln

Closest homes

More homes in Rockville 20850

Assigned schools

Explore the area

See this home in context

Open 509 Casey Ln 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