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CondominiumResidential

813 ROCKWELL AVE

GAITHERSBURG, MD 20878
0
Baths
1,700 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,634 (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.$565,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$169,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$395,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$565,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$565,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
78
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
34
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyMontgomery
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

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

E
Rosemont Elementary SchoolC
Elementary · Grades PK–5 · 1.2 mi
H
Gaithersburg High SchoolD
High · Grades 9–12 · 1.7 mi
M
Forest Oak Middle SchoolD-
Middle · Grades 6–8 · 3.0 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20878These 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.62
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 100.42

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.9%
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.66,167
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,976 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,457
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$176,656
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%

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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

813 Rockwell 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.

  • Smaller than 70% of homes in Gaithersburg 20878
  • Has a bigger lot than 95% of homes in Gaithersburg

How it measures up in Gaithersburg 20878

The dot is this home. The mark in the middle is the typical home in Gaithersburg 20878.

Living area1,700 ft²
SmallerTypical 2,255 ft²Bigger

Bigger than 30% of homes nearby

Lot size0.31 ac
SmallerTypical 0.11 acBigger

Bigger than 83% of homes nearby

How 813 Rockwell Ave ranks against every home in each area.
MeasureThis homeGaithersburgGaithersburg 20878Montgomery County
Living areabigger than1,700 ft²46% of homes30% of homes37% of homes
Lot sizebigger than0.31 ac95% of homes83% of homes79% of homes

About 813 Rockwell Ave

When did 813 Rockwell Ave, Gaithersburg, MD last sell?

813 Rockwell Ave, Gaithersburg, MD last sold on Sep 8, 2021, according to the county's recorded deed.

What schools serve 813 Rockwell Ave, Gaithersburg, MD?

813 Rockwell Ave, Gaithersburg, MD is assigned to Rosemont Elementary School (elementary), rated C; Gaithersburg High School (high), rated D; Forest Oak Middle School (middle), rated D-. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 813 Rockwell Ave, Gaithersburg, MD compare to other homes in Gaithersburg 20878?

Among the 20,757 homes in Gaithersburg 20878, it is bigger than 30% of them (1,700 ft² against a typical 2,255 ft²) and its lot is bigger than 83% of them (0.31 ac against a typical 0.11 ac). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 813 Rockwell Ave, Gaithersburg, MD?

The 2025 property tax bill for 813 Rockwell Ave, Gaithersburg, MD was $7,634. The county assessed it at $565,000.

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