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56 Dunbarton Ct, San Ramon, CA 94583 Property Records

Contra Costa County property record for 56 Dunbarton Ct, San Ramon, CA 94583

Property Summary

Property TypeSingle Family Home
Details4 bd · 3 ba · 3,176 sqft · built 1986
Lot Size0.23 acres (10,000 sqft)
Owner2 Individual Names on Record
Last Sale$2,155,500 (Feb 2025)
Tax Bill$13,386 (2025)
Deeds & MortgagesMar 2021 Transfer
Flood ZoneZone X (minimal risk)
APN213-113-016-9

Property Details

APN / Parcel Number

Primary APN213-113-016-9
Alternative APN
  • 213-113-016

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms12 Rooms
Stories2 Stories
Building Area3,176 sqft Living Area
1st Floor Area1,486 sqft
2nd Floor Area1,690 sqft

Exterior

Year BuiltBuilt 1986
Effective Year BuiltEffective 1986
Lot Area10,000 sqft (0.23 acres)
Garage TypeAttached
Garage Area630 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address56 DUNBARTON CT
CitySAN RAMON
StateCA
Zip94583-2568
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR-10
Legal DescriptionT05520 L0039 B
Legal SubdivisionSUBDIVISION 5520
Legal Tract05520
Legal Lot Number39
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group1
Census Block1005
Census Tract345111

Owner

Source: Contra Costa County records, as of October 12, 2026

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

Owner of Record2 Individual Names on Record
Mailing Address2754 ASCOT DR, SAN RAMON, CA 94583-2504
Owner TypeIndividual
VestingCommunity Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleFeb 14, 2025 · Amount on Record
Deed SaleFeb 14, 2025 · Amount on Record
Prior SaleJul 31, 2003 · Amount on Record
Deed Document Number202514270
Prior Transfer DateFeb 16, 2021
Prior Transfer Doc0000076331
Record UpdatedOct 29, 2026

March 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateMar 12, 2021
Property Address56 DUNBARTON CT, SAN RAMON, CA 94583-2568
Document Number0000076331
Map ReferenceMB 290 PG 32
Instrument DateFeb 16, 2021
Instrument2021-076331
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
AddressPO BOX 412, DIABLO, CA 94528-0412
InvestorPossibly a Property Investor

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$2,198,610 (+93.3%) Land $1,356,600 Building $842,010
2025$13,386.00 (+3.75%)$1,137,416 (+4.04%) Land $469,183 Building $668,233
2023$12,902.00 (+0.75%)$1,093,251 Land $450,965 Building $642,286
2022$12,806.00

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

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire RiskLow
lower than 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureNone
beyond ember reach

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 167 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
Verizon
Fixed Wireless		300 / 20
Etheric Networks
Fixed Wireless		250 / 100
AT&T
DSL		100 / 20

May also be available: T-Mobile.

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