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Single Family ResidenceResidential
$462,544$568 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $460,000 on Apr 19, 2021

646 20TH ST

RICHMOND, CA 94801
2
Beds
1
Baths
814 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.
3,000 ft²
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$463K
$440K low$485K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$460,000 · Apr 19, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,566 (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.$507,874 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$331,223
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$176,651
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$497,917

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.20
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
19
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
44
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
36
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.Single Family Residence
CountyCONTRA COSTA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1970
Lot (acres)The size of the land the home sits on, from county records.0.07
HeatingThe type of heating system in the home.Floor/Wall Furnace
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

Transaction History(7)

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
Grant Elementary SchoolF
Elementary · Grades KG–6 · 0.3 mi
M
DeJean Middle SchoolF
Middle · Grades 7–8 · 0.9 mi
H
Kennedy High SchoolD
High · Grades 9–12 · 1.6 mi

District: West Contra Costa Unified School District

Neighborhood · ZIP 94801These 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.135
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.564

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.19%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.34,858
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,957 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,136
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,543
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.23 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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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

646 20th 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 87% of homes in Contra Costa County
  • Costs more per square foot than 96% of homes in Belding / Woods
  • Smaller than 97% of homes in Contra Costa County
  • Has a smaller lot than 84% of homes in Contra Costa County
  • Older than 98% of homes in Contra Costa County

What homes are worth in Richmond 94801

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

This home
$185K$1.6M

This home is worth more than 55% of homes in Richmond 94801.

How it measures up in Richmond 94801

The dot is this home. The mark in the middle is the typical home in Richmond 94801.

Estimated value$462,544
CheaperTypical $446,031Pricier

Pricier than 55% of homes nearby

Price per ft²$568
CheaperTypical $372Pricier

Pricier than 93% of homes nearby

Living area814 ft²
SmallerTypical 1,275 ft²Bigger

Bigger than 11% of homes nearby

Lot size3,000 ft²
SmallerTypical 4,008 ft²Bigger

Bigger than 35% of homes nearby

Year built1920
OlderTypical 1948Newer

Newer than 22% of homes nearby

How 646 20th St ranks against every home in each area.
MeasureThis homeBelding / WoodsRichmond 94801Contra Costa County
Estimated valuepricier than$462,54458% of homes55% of homes13% of homes
Price per ft²pricier than$56896% of homes93% of homes68% of homes
Living areabigger than814 ft²7% of homes11% of homes3% of homes
Lot sizebigger than3,000 ft²17% of homes35% of homes16% of homes
Year builtnewer than192019% of homes22% of homes2% of homes

About 646 20th St

How much is 646 20th St, Richmond, CA worth?

The TopHap Estimate for 646 20th St, Richmond, CA is $462,544 as of Aug 30, 2026. The likely range is $439,713 to $485,375. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 646 20th St, Richmond, CA last sell?

646 20th St, Richmond, CA last sold on Apr 19, 2021 for $460,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 646 20th St, Richmond, CA?

646 20th St, Richmond, CA has 2 bedrooms, 1 bathrooms, 814 square feet of living space and a 0.07-acre lot.

When was 646 20th St, Richmond, CA built?

646 20th St, Richmond, CA was built in 1920, making it 106 years old. The building has 1 story.

What schools serve 646 20th St, Richmond, CA?

646 20th St, Richmond, CA is assigned to Grant Elementary School (elementary), rated F; DeJean Middle School (middle), rated F; Kennedy High School (high), rated D. All sit in West Contra Costa Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 646 20th St, Richmond, CA compare to other homes in Richmond 94801?

Among the 7,009 homes in Richmond 94801, it is worth more than 55% of them ($462,544 against a typical $446,031), its price per square foot is higher than 93% of them ($568 against a typical $372), it is bigger than 11% of them (814 ft² against a typical 1,275 ft²), its lot is bigger than 35% of them (3,000 ft² against a typical 4,008 ft²) and it is newer than 22% of them (1920 against a typical 1948). Measured against all of Contra Costa 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 646 20th St, Richmond, CA?

The 2025 property tax bill for 646 20th St, Richmond, CA was $8,566. The county assessed it at $507,874.

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