Quadplex (4 Units, Any Combination)Residential
Last sold for $1,100,000 on Jun 14, 2021
340 KEY BLVD
RICHMOND, CA 94805
0
Baths
3,112 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
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.
4
ParkingThe number of parking spaces on the property, including the garage.
Valuation
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,100,000 · Jun 14, 2021
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.$500,000
UNITED WHOLESALE MORTGAGE · recorded Jun 14, 2021
Tax & Assessment
Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$21,756 (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.$1,214,487 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$414,030
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$800,457
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,190,674
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.24
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
16
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.Quadplex (4 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Quadraplex
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.1960
Lot (acres)The size of the land the home sits on, from county records.0.14
PoolWhether the property has a pool, and what kind, such as in-ground.No
Transaction History(10)
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.
EH
Mira Vista SchoolB+
Elementary · Grades KG–8 · 0.7 mi
El Cerrito High SchoolB+
High · Grades 9–12 · 2.3 mi
District: West Contra Costa Unified School District
Neighborhood · ZIP 94805These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.614
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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.15,814
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,276 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,376
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,590
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%
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.No
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
340 Key Blvd 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.
- Bigger than 98% of homes in Richmond Heights
- Has a bigger lot than 91% of homes in Richmond Heights
- Older than 89% of homes in Contra Costa County
How it measures up in Richmond 94805
The dot is this home. The mark in the middle is the typical home in Richmond 94805.
Living area3,112 ft²
SmallerTypical 1,307 ft²Bigger
Bigger than 98% of homes nearby
Lot size0.14 ac
SmallerTypical 0.11 acBigger
Bigger than 86% of homes nearby
Year built1948
OlderTypical 1946Newer
Newer than 58% of homes nearby
| Measure | This home | Richmond Heights | Richmond 94805 | Contra Costa County |
|---|---|---|---|---|
| Living areabigger than | 3,112 ft² | 98% of homes | 98% of homes | 89% of homes |
| Lot sizebigger than | 0.14 ac | 91% of homes | 86% of homes | 43% of homes |
| Year builtnewer than | 1948 | 72% of homes | 58% of homes | 11% of homes |
About 340 Key Blvd
When did 340 Key Blvd, Richmond, CA last sell?
340 Key Blvd, Richmond, CA last sold on Jun 14, 2021 for $1,100,000, according to the county's recorded deed.
How big is 340 Key Blvd, Richmond, CA?
340 Key Blvd, Richmond, CA has 3,112 square feet of living space and a 0.14-acre lot.
When was 340 Key Blvd, Richmond, CA built?
340 Key Blvd, Richmond, CA was built in 1948, making it 78 years old. It is a quadraplex home. The building has 1 story.
What schools serve 340 Key Blvd, Richmond, CA?
340 Key Blvd, Richmond, CA is assigned to Mira Vista School (elementary), rated B+; El Cerrito High School (high), rated B+. All sit in West Contra Costa Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.
How does 340 Key Blvd, Richmond, CA compare to other homes in Richmond 94805?
Among the 4,505 homes in Richmond 94805, it is bigger than 98% of them (3,112 ft² against a typical 1,307 ft²), its lot is bigger than 86% of them (0.14 ac against a typical 0.11 ac) and it is newer than 58% of them (1948 against a typical 1946). These shares are recounted nightly from the full county assessor record for each area, not from active listings.
What are the property taxes on 340 Key Blvd, Richmond, CA?
The 2025 property tax bill for 340 Key Blvd, Richmond, CA was $21,756. The county assessed it at $1,214,487.
Closest homes
- 5114 Prather Ave56 ft · 3 bd · 2 ba · 1,617 ft² · Sold Jan 1900
- 322 Key Blvd$844K104 ft · 5 bd · 3 ba · 2,181 ft² · Sold $600K · Jul 2015
- 5120 Prather Ave$535K94 ft · 2 bd · 1 ba · 711 ft² · Sold $542K · Nov 2025
- 5101 Prather Ave$649K135 ft · 2 bd · 1 ba · 1,128 ft² · Sold $380K · Jun 2004
- 5126 Prather Ave$743K119 ft · 2 bd · 2 ba · 857 ft² · Sold $825K · Jun 2021
- 320 Key Blvd$783K139 ft · 4 bd · 2 ba · 1,933 ft² · Sold $750K · May 2022
- 5115 Prather Ave$417K164 ft · 1 bd · 1 ba · 865 ft² · Sold $211K · May 1998
- 5123 Prather Ave$768K163 ft · 3 bd · 2.5 ba · 1,849 ft² · Sold Aug 2007
More homes in Richmond 94805
- 849 Yuba St$580K2 bd · 1 ba · 960 ft² · Sold $445K · Aug 2026
- 418 44th St$489K2 bd · 1 ba · 800 ft² · Sold $550K · Aug 2026
- 438 43rd St$550K2 bd · 1 ba · 881 ft² · Sold $530K · Aug 2026
- 725 Boyd Ave$511K2 bd · 1 ba · 927 ft² · Sold $470K · Jul 2026
- 329 45th St$600K3 bd · 2 ba · 1,097 ft² · Sold $607K · Jul 2026
- 439 44th St$475K3 bd · 1 ba · 1,101 ft² · Sold $550K · Jul 2026
- 1610 Olive Ave$597K2 bd · 1 ba · 684 ft² · Sold $400K · Jul 2026
- 5411 Garvin Ave$700K2 bd · 2 ba · 1,491 ft² · Sold $800K · Jul 2026
- 6630 Arlington Blvd$1.2M3 bd · 2 ba · 1,615 ft² · Sold $1.2M · Jul 2026
- 628 Kern St$1.2M3 bd · 1.5 ba · 1,328 ft² · Sold $1.2M · Jul 2026
- 6110 Ralston Ave$688K2 bd · 1 ba · 720 ft² · Sold $689K · Jun 2026
- 1514 Olive Ave$659K1 bd · 1 ba · 590 ft² · Sold $660K · Jun 2026
Assigned schools
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