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Apartments (Generic)Residential
Last sold for $78,000,000 on Sep 18, 2026

309 SPRINGFIELD DR

SAN RAMON, CA 94583
0
Baths
91,733 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.
4.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
80
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$78,000,000 · Sep 18, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$421,837 (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.$31,528,271 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$10,362,935
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$21,165,336
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,910,071

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.50
41
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
56
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
44
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
48
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
62
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
CountyCONTRA COSTA
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Montevideo Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Iron Horse Middle SchoolA+
Middle · Grades 6–8 · 0.8 mi
H
California High SchoolA+
High · Grades 9–12 · 0.9 mi

District: San Ramon Valley Unified School District

Neighborhood · ZIP 94583These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.642

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.40,588
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,502 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$165,274
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$193,526
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.25 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

309 Springfield Dr 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.

  • Among the largest homes in Southern San Ramon
  • Among the largest lots in Southern San Ramon
  • Newer than 92% of homes in Southern San Ramon

How it measures up in San Ramon 94583

The dot is this home. The mark in the middle is the typical home in San Ramon 94583.

Living area91,733 ft²
SmallerTypical 1,880 ft²Bigger

Bigger than almost all homes nearby

Lot size4.22 ac
SmallerTypical 0.16 acBigger

Bigger than 98% of homes nearby

Year built1988
OlderTypical 1979Newer

Newer than 74% of homes nearby

How 309 Springfield Dr ranks against every home in each area.
MeasureThis homeSouthern San RamonSan Ramon 94583Contra Costa County
Living areabigger than91,733 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than4.22 acalmost all homes98% of homes98% of homes
Year builtnewer than198892% of homes74% of homes68% of homes

About 309 Springfield Dr

When did 309 Springfield Dr, San Ramon, CA last sell?

309 Springfield Dr, San Ramon, CA last sold on Sep 18, 2026 for $78,000,000, according to the county's recorded deed.

When was 309 Springfield Dr, San Ramon, CA built?

309 Springfield Dr, San Ramon, CA was built in 1988, making it 38 years old. The building has 1 story.

What schools serve 309 Springfield Dr, San Ramon, CA?

309 Springfield Dr, San Ramon, CA is assigned to Montevideo Elementary School (elementary), rated A; Iron Horse Middle School (middle), rated A+; California High School (high), rated A+. All sit in San Ramon Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Springfield Dr, San Ramon, CA compare to other homes in San Ramon 94583?

Among the 12,589 homes in San Ramon 94583, it is bigger than almost all of them (91,733 ft² against a typical 1,880 ft²), its lot is bigger than 98% of them (4.22 ac against a typical 0.16 ac) and it is newer than 74% of them (1988 against a typical 1979). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 309 Springfield Dr, San Ramon, CA?

The 2025 property tax bill for 309 Springfield Dr, San Ramon, CA was $421,837. The county assessed it at $31,528,271.

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Assigned schools

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