Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$618,577$535 / 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 83How 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 $620,000 on Jul 27, 2026

645 31ST ST

RICHMOND, CA 94804
2
Beds
2
Baths
1,156 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.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
1944
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$619K
$511K low$726K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$620,000 · Jul 27, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,689 (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.$522,046 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$384,730
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$137,316
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$511,811

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.0.06
HeatingThe type of heating system in the home.Central
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(5)

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.

M
DeJean Middle SchoolF
Middle · Grades 7–8 · 0.5 mi
H
Kennedy High SchoolD
High · Grades 9–12 · 1.2 mi
E
Wilson Elementary SchoolD
Elementary · Grades KG–6 · 2.6 mi

District: West Contra Costa Unified School District

Neighborhood · ZIP 94804These 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.133
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.561

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
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.44,926
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,044 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,581
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,956
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.22 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

Owner Tools

Do you own this home?
Claim this home

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

645 31st 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 more than 83% of homes in North and East
  • Costs more per square foot than 80% of homes in North and East
  • Smaller than 82% of homes in Contra Costa County
  • Has a smaller lot than 93% of homes in North and East
  • Older than 92% of homes in Contra Costa County

What homes are worth in Richmond 94804

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

This home
$316K$1M

This home is worth more than 74% of homes in Richmond 94804.

How it measures up in Richmond 94804

The dot is this home. The mark in the middle is the typical home in Richmond 94804.

Estimated value$618,577
CheaperTypical $527,089Pricier

Pricier than 74% of homes nearby

Price per ft²$535
CheaperTypical $464Pricier

Pricier than 74% of homes nearby

Living area1,156 ft²
SmallerTypical 1,193 ft²Bigger

Bigger than 47% of homes nearby

Lot size2,500 ft²
SmallerTypical 0.1 acBigger

Bigger than 24% of homes nearby

Year built1944
OlderTypical 1951Newer

Newer than 39% of homes nearby

How 645 31st St ranks against every home in each area.
MeasureThis homeNorth and EastRichmond 94804Contra Costa County
Estimated valuepricier than$618,57783% of homes74% of homes34% of homes
Price per ft²pricier than$53580% of homes74% of homes64% of homes
Living areabigger than1,156 ft²51% of homes47% of homes18% of homes
Lot sizebigger than2,500 ft²7% of homes24% of homes14% of homes
Year builtnewer than194467% of homes39% of homes8% of homes

About 645 31st St

How much is 645 31st St, Richmond, CA worth?

The TopHap Estimate for 645 31st St, Richmond, CA is $618,577 as of Aug 30, 2026. The likely range is $511,219 to $725,935. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 645 31st St, Richmond, CA last sell?

645 31st St, Richmond, CA last sold on Jul 27, 2026 for $620,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 645 31st St, Richmond, CA?

645 31st St, Richmond, CA has 2 bedrooms, 2 bathrooms, 1,156 square feet of living space and a 0.06-acre lot.

When was 645 31st St, Richmond, CA built?

645 31st St, Richmond, CA was built in 1944, making it 82 years old. The building has 1 story.

What schools serve 645 31st St, Richmond, CA?

645 31st St, Richmond, CA is assigned to DeJean Middle School (middle), rated F; Kennedy High School (high), rated D; Wilson Elementary School (elementary), 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 645 31st St, Richmond, CA compare to other homes in Richmond 94804?

Among the 11,870 homes in Richmond 94804, it is worth more than 74% of them ($618,577 against a typical $527,089), its price per square foot is higher than 74% of them ($535 against a typical $464), it is bigger than 47% of them (1,156 ft² against a typical 1,193 ft²), its lot is bigger than 24% of them (2,500 ft² against a typical 0.1 ac) and it is newer than 39% of them (1944 against a typical 1951). Measured against all of Contra Costa County, it is worth more than 34% 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 645 31st St, Richmond, CA?

The 2025 property tax bill for 645 31st St, Richmond, CA was $8,689. The county assessed it at $522,046.

More homes on 31st St

Closest homes

More homes in Richmond 94804

Assigned schools

Explore the area

See this home in context

Open 645 31st St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map