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Single Family ResidenceResidential
$681,792$385 / 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 Oct 21, 2026

621 ROLLINS AVE

ROCKVILLE, MD 20852
2
Baths
1,773 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1961
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$682K
$634K low$729K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,210 (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.$713,267 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$683,133
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$743,400

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.Split Foyer
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.19
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
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.Shed · 100 ft²

Transaction History(1)

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
Farmland Elementary SchoolA
Elementary · Grades KG–5 · 1.0 mi
M
Tilden Middle SchoolA-
Middle · Grades 6–8 · 1.1 mi
H
Walter Johnson High SchoolA-
High · Grades 9–12 · 2.2 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20852These 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.128
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.36

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.6%
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.51,764
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,168 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,549
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$148,499
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%

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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

621 Rollins Ave 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.

  • Costs more per square foot than 79% of homes in Montgomery County
  • Has a bigger lot than 74% of homes in Rockville 20852
  • Older than 85% of homes in Rockville 20852

What homes are worth in Rockville 20852

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

This home
$166K$1.7M

This home is worth more than 57% of homes in Rockville 20852.

How it measures up in Rockville 20852

The dot is this home. The mark in the middle is the typical home in Rockville 20852.

Estimated value$681,792
CheaperTypical $606,570Pricier

Pricier than 57% of homes nearby

Price per ft²$385
CheaperTypical $362Pricier

Pricier than 63% of homes nearby

Living area1,773 ft²
SmallerTypical 1,560 ft²Bigger

Bigger than 58% of homes nearby

Lot size0.19 ac
SmallerTypical 2,004 ft²Bigger

Bigger than 74% of homes nearby

Year built1961
OlderTypical 1980Newer

Newer than 15% of homes nearby

How 621 Rollins Ave ranks against every home in each area.
MeasureThis homeRockvilleRockville 20852Montgomery County
Estimated valuepricier than$681,79250% of homes57% of homes57% of homes
Price per ft²pricier than$38567% of homes63% of homes79% of homes
Living areabigger than1,773 ft²46% of homes58% of homes40% of homes
Lot sizebigger than0.19 ac65% of homes74% of homes58% of homes
Year builtnewer than196131% of homes15% of homes25% of homes

About 621 Rollins Ave

How much is 621 Rollins Ave, Rockville, MD worth?

The TopHap Estimate for 621 Rollins Ave, Rockville, MD is $681,792 as of Oct 21, 2026. The likely range is $634,112 to $729,472. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 621 Rollins Ave, Rockville, MD last sell?

621 Rollins Ave, Rockville, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 621 Rollins Ave, Rockville, MD?

621 Rollins Ave, Rockville, MD has 2 bathrooms, 1,773 square feet of living space and a 0.19-acre lot.

When was 621 Rollins Ave, Rockville, MD built?

621 Rollins Ave, Rockville, MD was built in 1961, making it 65 years old. It is a split foyer home. The building has 1 story.

What schools serve 621 Rollins Ave, Rockville, MD?

621 Rollins Ave, Rockville, MD is assigned to Farmland Elementary School (elementary), rated A; Tilden Middle School (middle), rated A-; Walter Johnson 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 621 Rollins Ave, Rockville, MD compare to other homes in Rockville 20852?

Among the 13,874 homes in Rockville 20852, it is worth more than 57% of them ($681,792 against a typical $606,570), its price per square foot is higher than 63% of them ($385 against a typical $362), it is bigger than 58% of them (1,773 ft² against a typical 1,560 ft²), its lot is bigger than 74% of them (0.19 ac against a typical 2,004 ft²) and it is newer than 15% of them (1961 against a typical 1980). Measured against all of Montgomery County, it is worth more than 57% 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 621 Rollins Ave, Rockville, MD?

The 2025 property tax bill for 621 Rollins Ave, Rockville, MD was $9,210. The county assessed it at $713,267.

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