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421 Donner Way, San Ramon, CA 94582 Property Records

Contra Costa County property record for 421 Donner Way, San Ramon, CA 94582

Property Summary

Property TypeSingle Family Home
Details3 bd · 2.5 ba · 2,648 sqft · built 1988
Lot Size0.114 acres (4,950 sqft)
OwnerCompany Name on Record
Last Sale$1,190,000 (Jul 2020)
Tax Bill$15,436 (2025)
Deeds & MortgagesJul 2020 Sale
Flood ZoneZone X (minimal risk)
APN217-200-010-7

Property Details

APN / Parcel Number

Primary APN217-200-010-7
Alternative APN
  • 217-200-010

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms11 Rooms
Stories1 Story
Building Area2,648 sqft Living Area
1st Floor Area1,410 sqft
Basement Area1,238 sqft

Exterior

Year BuiltBuilt 1988
Effective Year BuiltEffective 1998
Architectural StyleCluster
Lot Area4,950 sqft (0.114 acres)
Garage TypeAttached
Garage Area420 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address421 DONNER WAY
CitySAN RAMON
StateCA
Zip94582-4875
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT6550 L16
Legal SubdivisionSUBDIVISION 6550
Legal Tract6550
Legal Lot Number16
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group3
Census Block3001
Census Tract345117

Owner

Source: Contra Costa County records, as of July 14, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on Record
Mailing Address143 41ST AVE, SAN MATEO, CA 94403-5107
Owner TypeCompany
VestingBorrower in Default

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJul 23, 2020 · Amount on Record
Deed SaleJul 23, 2020 · Amount on Record
Prior SaleFeb 3, 2012 · Amount on Record
Deed Document Number2020150414
Record UpdatedOct 29, 2026

July 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateJul 23, 2020
Property Address421 DONNER WAY, SAN RAMON, CA 94582-4875
Document Number0000150414
Instrument DateJul 16, 2020
Instrument150414
Transaction TypeTransfer
Record UpdatedAug 7, 2020
Title CompanyORANGE COAST TITLE COMPANY/NTHRN CA, ORANGE COAST TITLE CO/NTHRN CA

Transaction

AmountAmount Recorded
Tax$1,309.00
Amount AccuracyFull Value
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address421 DONNER WAY SAN RAMON CA 945824875, SAN RAMON, CA 94582-4875

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalitySan Ramon City
Unified School DistrictSan Ramon Valley Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,313,852 (+2%) Land $772,855 Building $540,997
2025$15,436.00 (+3.9%)$1,288,091 (+4.04%) Land $757,701 Building $530,390
2023$14,856.00 (+1.31%)$1,238,076 Land $728,280 Building $509,796
2022$14,664.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 62% of the US · lower than 77% of California
Wildfire Likelihood0.07% annual chance
ExposureDirect
burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemEAST BAY MUD
serves 1,468,000 people · EPA ID CA0110005
Water SourceSurface water
Last State InspectionDec 2021
LeadUnder 1 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 458 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 2,000
Unwired
Fixed Wireless		300 / 25
Etheric Networks
Fixed Wireless		250 / 100
AT&T
DSL · Fiber in parts of the area		100 / 20

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Donner Way

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