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525 Deldrin Ct, San Ramon, CA 94582 Property Records

Contra Costa County property record for 525 Deldrin Ct, San Ramon, CA 94582

Property Summary

Property TypeSingle Family Home
Details4 bd · 3 ba · 2,775 sqft · built 2004
Lot Size0.206 acres (8,988 sqft)
OwnerTrust Name on File
Last Sale$830,000 (Oct 2010)
Tax Bill$14,696 (2025)
Deeds & MortgagesFeb 2023 Line of Credit
Sep 2020 Mortgage
Flood ZoneZone X (minimal risk)
APN222-300-068-4

Property Details

APN / Parcel Number

Primary APN222-300-068-4
Alternative APN
  • 222-300-068

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms10 Rooms
Stories2 Stories
Building Area2,775 sqft Living Area
1st Floor Area1,309 sqft
2nd Floor Area1,466 sqft

Exterior

Year BuiltBuilt 2004
Effective Year BuiltEffective 2005
Lot Area8,988 sqft (0.206 acres)
Garage TypeAttached
Garage Area447 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address525 DELDRIN CT
CitySAN RAMON
StateCA
Zip94582-5165
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT8564 L68
Legal SubdivisionSUBDIVISION 8564
Legal Tract8564
Legal Lot Number68
JurisdictionCONTRA COSTA CA
Township / Civil DivisionTASSAJARA
Census Block Group1
Census Block1020
Census Tract355121

Owner

525 Deldrin Ct is owner-occupied and held in a trust since May 2012.

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

Owner of RecordTrust Name on File
Mailing Address525 DELDRIN CT, SAN RAMON, CA 94582-5165
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

DateDocument
Feb 10, 2023Deed of Trust, Mortgage · Line of Credit
STAR ONE CU
Sep 15, 2020Deed of Trust, Mortgage · Conventional Mortgage
STAR ONE CU

Assessor's Deed Record

Deed NamesName on Deed
Last SaleOct 20, 2010 · Amount on File
Deed SaleOct 20, 2010 · Amount on File
Prior SaleJul 28, 2005 · Amount on File
Deed Document Number2010227596
Last Transfer DateMay 4, 2012
Transfer Doc0000151210
Record UpdatedOct 29, 2026

February 2023: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address525 DELDRIN CT, SAN RAMON, CA 94582-5165
Transaction TypeMortgage
Record UpdatedFeb 20, 2023

Transferred To (Grantee/Buyer)

NameVerified Name
Address525 DELDRIN CT, SAN RAMON, CA 94582-5165

Mortgage

Document Number0000012225
DateFeb 10, 2023
Instrument2023-012225
Lender
NameSTAR ONE CU
TypeCredit Union
AddressSUNNYVALE, CA 94088
Agreement
TypeLine of Credit
AmountAmount on Record
Term302 Months
DueApr 14, 2048
Interest
Rate TypeAdjustable Rate
Change FrequencyMonthly

September 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address525 DELDRIN CT, SAN RAMON, CA 94582-5165
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyFIRST AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address525 DELDRIN CT, SAN RAMON, CA 94582-5165

Mortgage

Document Number0000203984
DateSep 15, 2020
Instrument2020-203984
Lender
NameSTAR ONE CU
TypeCredit Union
AddressSUNNYVALE, CA 94088
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term241 Months
DueOct 1, 2040

Tax Assessment & Valuation

The 2025 property tax bill for 525 Deldrin Ct was $14,696 with a homeowner's exemption.

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$1,084,628 (+2%) Land $589,685 Building $494,943
2025$14,696.00 Homeowner's exemption$1,063,362 Land $578,123 Building $485,239
2023$14,097.00 (+1.47%) Homeowner's exemption$1,022,073 Land $555,675 Building $466,398
2022$13,893.00

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

Flood

FEMA maps place 525 Deldrin Ct in Zone X, an area of minimal flood risk.

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

Wildfire risk around 525 Deldrin Ct is low, with a 0.04% annual chance of wildfire.

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

Wildfire RiskLow
lower than 66% of the US · lower than 80% of California
Wildfire Likelihood0.04% annual chance
ExposureIndirect
within 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 SystemDUBLIN SAN RAMON SERVICES DISTRICT
serves 98,776 people · EPA ID CA0110009
Water SourcePurchased surface water from ZONE 7 WATER AGENCY
Last State InspectionSep 2024
LeadUnder 1 ppb (2023–2025)
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 587 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
Etheric Networks
Fixed Wireless		250 / 100
T-Mobile
Fixed Wireless		100 / 20

May also be available: Sail Internet.

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