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173 Castleton Ct, San Ramon, CA 94583 Property Records

Contra Costa County property record for 173 Castleton Ct, San Ramon, CA 94583 · Last verified July 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms4 Beds
Bathrooms2.5 Baths
Year BuiltBuilt 1980
Square Footage2,103 sqft Living Area
Lot Size6,500 sqft (0.149 acres)
OccupancyOwner Occupied
Last Sale$545,000 (2002)
Tax Bill$9,713.00 (2025)

Property Details

APN / Parcel Number

Primary APN209-561-008-1
Alternative APN
  • 209-561-008

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Partial Baths1 Partial Baths
Total Rooms9 Rooms
Building Area2,103 sqft Living Area
Gross Area2,596 sqft Gross Area
1st Floor1,203 sqft 1st Floor
2nd Floor900 sqft 2nd Floor
Stories2 Stories

Exterior

Year BuiltBuilt 1979
Effective Year BuiltEffective 1980
Architectural StyleCluster Style
Lot Area6,500 sqft (0.149 acres)
Parking Spaces2 Parking Spaces
Garage TypeAttached Garage
Garage Area493 sqft Garage

Location & Zoning

Street Address173 CASTLETON CT
CitySAN RAMON
StateCA
Zip94583-1844
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionT05360 L0023 B EX MR
Legal SubdivisionSUBDIVISION 5360
Legal Tract05360
Legal Lot Number23
JurisdictionCONTRA COSTA CA
Minor Civil DivisionCENTRAL CONTRA COSTA
Census Blockgroup2
Census Block2000
Census Tract345116

Owner

Source: Contra Costa County records · APN 209-561-008-1

Assessment roll updated July 14, 2026 · Last verified July 2026

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

Owner of RecordCompany Name on File
Mailing Address173 CASTLETON CT, SAN RAMON, CA 94583-1844
OccupancyOwner Occupied
Owner TypeOwner is a Company
VestingOwner is a Trust, Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleApr 23, 2002 · Amount on Record
Deed SaleApr 23, 2002 · Amount on Record
Deed Doc Number2002142020
Last Transfer DateFeb 05, 2015
Transfer Doc0000034707
Record RefreshedSep 20, 2026

July 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateJul 21, 2022
Property Address173 CASTLETON CT, SAN RAMON, CA 94583-1844
Document Number0000116579
Map ReferenceMB 210 PG 3
Instrument DateJun 30, 2022
Instrument2022-116579
Transaction TypeTransfer
Record UpdatedJun 07, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address173 CASTLETON CT, SAN RAMON, CA 94583-1844

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

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

YearTax BillAssessed Value
2026$821,206 (+2%) Land $482,178 Building $339,028
2025$9,713.00 (+3.87%) Homeowner's exemption$805,105 (+4.04%) Land $472,724 Building $332,381
2023$9,351.00 (+0.78%) Homeowner's exemption$773,843 Land $454,368 Building $319,475
2022$9,279.00

Flood & Wildfire

173 Castleton Ct is in FEMA Zone X, outside the Special Flood Hazard Area, with no wildfire exposure.

Flood

Source: FEMA National Flood Hazard Layer · Contra Costa County (06013C), updated October 12, 2026

FEMA Flood ZoneZone X
minimal flood hazard · outside the 0.2% annual chance floodplain
Special Flood Hazard AreaNo

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire Risk to HomesNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach of burnable land

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

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