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Single Family ResidenceResidential
$769,942$219 / 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 92How 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
Last sold for $135,800 on Mar 31, 1994

502 CALVIN LN

ROCKVILLE, MD 20851
3
Baths
3,517 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$770K
$711K low$829K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$135,800 · Mar 31, 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.$259,942
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$207,954
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.72%
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.$500,000
CAPITAL BANK NA · recorded Nov 22, 2021
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.$10,000
CHASE MANHATTAN BANK USA NA

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,483 (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.$628,467 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$574,933
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,000

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.0.15
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
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 · 256 ft²Porch · 224 ft²

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

E
Meadow Hall Elementary SchoolC-
Elementary · Grades KG–5 · 0.5 mi
H
Rockville High SchoolB-
High · Grades 9–12 · 0.5 mi
M
Earle B. Wood Middle SchoolB-
Middle · Grades 6–8 · 1.2 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20851These 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.82
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 100.34

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.13,201
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,514 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,758
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,170
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

502 Calvin 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.

  • Among the most valuable homes in Rockville 20851
  • Among the lowest price per square foot in Rockville 20851
  • Among the largest homes in Rockville 20851
  • Has a smaller lot than 74% of homes in Rockville 20851
  • Older than 84% of homes in Montgomery County

What homes are worth in Rockville 20851

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

This home
$383K$754K

This home is worth more than almost all homes in Rockville 20851.

How it measures up in Rockville 20851

The dot is this home. The mark in the middle is the typical home in Rockville 20851.

Estimated value$769,942
CheaperTypical $532,761Pricier

Pricier than almost all homes nearby

Price per ft²$219
CheaperTypical $359Pricier

Cheaper than almost all homes nearby

Living area3,517 ft²
SmallerTypical 1,479 ft²Bigger

Bigger than almost all homes nearby

Lot size0.15 ac
SmallerTypical 0.16 acBigger

Bigger than 26% of homes nearby

Year built1953
OlderTypical 1953Newer

Newer than 54% of homes nearby

How 502 Calvin Ln ranks against every home in each area.
MeasureThis homeRockvilleRockville 20851Montgomery County
Estimated valuepricier than$769,94262% of homesalmost all homes65% of homes
Price per ft²pricier than$2194% of homesalmost no homes11% of homes
Living areabigger than3,517 ft²92% of homesalmost all homes84% of homes
Lot sizebigger than0.15 ac46% of homes26% of homes46% of homes
Year builtnewer than195317% of homes54% of homes16% of homes

About 502 Calvin Ln

How much is 502 Calvin Ln, Rockville, MD worth?

The TopHap Estimate for 502 Calvin Ln, Rockville, MD is $769,942 as of Jul 14, 2026. The likely range is $710,897 to $828,987. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 502 Calvin Ln, Rockville, MD last sell?

502 Calvin Ln, Rockville, MD last sold on Mar 31, 1994 for $135,800, according to the county's recorded deed.

How big is 502 Calvin Ln, Rockville, MD?

502 Calvin Ln, Rockville, MD has 3 bathrooms, 3,517 square feet of living space and a 0.15-acre lot.

When was 502 Calvin Ln, Rockville, MD built?

502 Calvin Ln, Rockville, MD was built in 1953, making it 73 years old. It is a bi-level home. The building has 2 stories.

What schools serve 502 Calvin Ln, Rockville, MD?

502 Calvin Ln, Rockville, MD is assigned to Meadow Hall Elementary School (elementary), rated C-; Rockville High School (high), rated B-; Earle B. Wood Middle School (middle), rated B-. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 502 Calvin Ln, Rockville, MD compare to other homes in Rockville 20851?

Among the 3,658 homes in Rockville 20851, it is worth more than almost all of them ($769,942 against a typical $532,761), its price per square foot is higher than almost none of them ($219 against a typical $359), it is bigger than almost all of them (3,517 ft² against a typical 1,479 ft²), its lot is bigger than 26% of them (0.15 ac against a typical 0.16 ac) and it is newer than 54% of them (1953 against a typical 1953). Measured against all of Montgomery County, it is worth more than 65% 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 502 Calvin Ln, Rockville, MD?

The 2025 property tax bill for 502 Calvin Ln, Rockville, MD was $8,483. The county assessed it at $628,467.

Closest homes

More homes in Rockville 20851

Assigned schools

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