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Single Family ResidenceResidential
$506,756$480 / 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 97How 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 $399,000 on Aug 27, 2021

820 1ST ST

ROCKVILLE, MD 20850
2
Baths
1,056 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.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$507K
$491K low$523K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$399,000 · Aug 27, 2021
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.$506,756
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$405,405

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,075 (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.$395,533 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$355,267
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$435,800

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.Conventional
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

Transaction History(6)

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
Maryvale Elementary SchoolB-
Elementary · Grades PK–5 · 0.2 mi
H
Rockville High SchoolB-
High · Grades 9–12 · 1.0 mi
M
Earle B. Wood Middle SchoolB-
Middle · Grades 6–8 · 1.6 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

820 1st St 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 76% of homes in Rockville 20850
  • Costs more per square foot than 93% of homes in Rockville
  • Smaller than 91% of homes in Rockville
  • Older than 89% of homes in Rockville 20850

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
$177K$1.6M

This home is worth more than 24% 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$506,756
CheaperTypical $749,118Pricier

Pricier than 24% of homes nearby

Price per ft²$480
CheaperTypical $340Pricier

Pricier than 92% of homes nearby

Living area1,056 ft²
SmallerTypical 2,031 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.19 ac
SmallerTypical 0.11 acBigger

Bigger than 63% of homes nearby

Year built1954
OlderTypical 1988Newer

Newer than 11% of homes nearby

How 820 1st St ranks against every home in each area.
MeasureThis homeRockvilleRockville 20850Montgomery County
Estimated valuepricier than$506,75625% of homes24% of homes32% of homes
Price per ft²pricier than$48093% of homes92% of homes91% of homes
Living areabigger than1,056 ft²9% of homes9% of homes10% of homes
Lot sizebigger than0.19 ac63% of homes63% of homes57% of homes
Year builtnewer than195421% of homes11% of homes16% of homes

About 820 1st St

How much is 820 1st St, Rockville, MD worth?

The TopHap Estimate for 820 1st St, Rockville, MD is $506,756 as of Jul 14, 2026. The likely range is $490,660 to $522,852. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 820 1st St, Rockville, MD last sell?

820 1st St, Rockville, MD last sold on Aug 27, 2021 for $399,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 820 1st St, Rockville, MD?

820 1st St, Rockville, MD has 2 bathrooms, 1,056 square feet of living space and a 0.19-acre lot.

When was 820 1st St, Rockville, MD built?

820 1st St, Rockville, MD was built in 1954, making it 72 years old. It is a conventional home. The building has 1 story.

What schools serve 820 1st St, Rockville, MD?

820 1st St, Rockville, MD is assigned to Maryvale Elementary School (elementary), rated B-; 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 820 1st St, Rockville, MD compare to other homes in Rockville 20850?

Among the 13,722 homes in Rockville 20850, it is worth more than 24% of them ($506,756 against a typical $749,118), its price per square foot is higher than 92% of them ($480 against a typical $340), it is bigger than 9% of them (1,056 ft² against a typical 2,031 ft²), its lot is bigger than 63% of them (0.19 ac against a typical 0.11 ac) and it is newer than 11% of them (1954 against a typical 1988). Measured against all of Montgomery County, it is worth more than 32% 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 820 1st St, Rockville, MD?

The 2025 property tax bill for 820 1st St, Rockville, MD was $6,075. The county assessed it at $395,533.

More homes on 1st St

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More homes in Rockville 20850

Assigned schools

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