Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential
$466,000$418 / 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 Jun 23, 2026

509 28TH ST

RICHMOND, CA 94804
3
Beds
2
Baths
1,116 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.
1,161 ft²
Lot SizeThe size of the land the home sits on, from county records.
1982
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$466K
$433K low$499K high
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.$94,250
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$75,400
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.80%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$371,750
MASON MCDUFFIE MORTGAGE CORP · recorded Oct 25, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,717 (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.$166,248 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$59,724
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$106,524
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$162,989

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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
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.1983
Lot (acres)The size of the land the home sits on, from county records.0.03
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.

M
DeJean Middle SchoolF
Middle · Grades 7–8 · 0.4 mi
H
Kennedy High SchoolD
High · Grades 9–12 · 1.1 mi
E
Wilson Elementary SchoolD
Elementary · Grades KG–6 · 2.7 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
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

509 28th 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 88% of homes in Contra Costa County
  • Costs less per square foot than 78% of homes in North and East
  • Smaller than 85% of homes in Contra Costa County
  • Among the smallest lots in North and East
  • Among the newest homes in North and East

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
$336K$1.1M

This home is worth more than 26% 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$466,000
CheaperTypical $543,111Pricier

Pricier than 26% of homes nearby

Price per ft²$418
CheaperTypical $480Pricier

Pricier than 29% of homes nearby

Living area1,116 ft²
SmallerTypical 1,193 ft²Bigger

Bigger than 44% of homes nearby

Lot size1,161 ft²
SmallerTypical 0.1 acBigger

Bigger than 4% of homes nearby

Year built1982
OlderTypical 1951Newer

Newer than 75% of homes nearby

How 509 28th St ranks against every home in each area.
MeasureThis homeNorth and EastRichmond 94804Contra Costa County
Estimated valuepricier than$466,00014% of homes26% of homes12% of homes
Price per ft²pricier than$41822% of homes29% of homes39% of homes
Living areabigger than1,116 ft²46% of homes44% of homes15% of homes
Lot sizebigger than1,161 ft²almost no homes4% of homes7% of homes
Year builtnewer than1982almost all homes75% of homes58% of homes

About 509 28th St

How much is 509 28th St, Richmond, CA worth?

The TopHap Estimate for 509 28th St, Richmond, CA is $466,000 as of Jun 23, 2026. The likely range is $433,380 to $498,620. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 28th St, Richmond, CA last sell?

509 28th St, Richmond, CA last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 509 28th St, Richmond, CA?

509 28th St, Richmond, CA has 3 bedrooms, 2 bathrooms, 1,116 square feet of living space and a 0.03-acre lot.

When was 509 28th St, Richmond, CA built?

509 28th St, Richmond, CA was built in 1982, making it 44 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 509 28th St, Richmond, CA?

509 28th 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 509 28th St, Richmond, CA compare to other homes in Richmond 94804?

Among the 11,870 homes in Richmond 94804, it is worth more than 26% of them ($466,000 against a typical $543,111), its price per square foot is higher than 29% of them ($418 against a typical $480), it is bigger than 44% of them (1,116 ft² against a typical 1,193 ft²), its lot is bigger than 4% of them (1,161 ft² against a typical 0.1 ac) and it is newer than 75% of them (1982 against a typical 1951). Measured against all of Contra Costa County, it is worth more than 12% 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 509 28th St, Richmond, CA?

The 2025 property tax bill for 509 28th St, Richmond, CA was $3,717. The county assessed it at $166,248.

Closest homes

More homes in Richmond 94804

Assigned schools

Explore the area

See this home in context

Open 509 28th 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