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638 Argyle Ct, San Ramon, CA 94582 Property Records

Contra Costa County property record for 638 Argyle Ct, San Ramon, CA 94582

Property Summary

Property TypeSingle Family Home
Details4 bd · 3.5 ba · 2,795 sqft · built 2006
Lot Size0.107 acres (4,640 sqft)
Owner2 Company Names on File
Last Sale$735,000 (Nov 2010)
Tax Bill$16,402 (2025)
Deeds & MortgagesJan 2021 Mortgage
Flood ZoneZone X (minimal risk)
APN223-540-006-2

Property Details

APN / Parcel Number

Primary APN223-540-006-2
Alternative APN
  • 223-540-006

Interior

Bedrooms4 Beds
Full Baths3.5 Baths
Half Baths1 Half Bath
Total Rooms11 Rooms
Stories2 Stories
Building Area2,795 sqft Living Area
1st Floor Area1,480 sqft
2nd Floor Area1,315 sqft

Exterior

Year BuiltBuilt 2006
Effective Year BuiltEffective 2007
Lot Area4,640 sqft (0.107 acres)
Garage TypeAttached
Garage Area543 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address638 ARGYLE CT
CitySAN RAMON
StateCA
Zip94582-5293
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT8928 L104
Legal SubdivisionSUBDIVISION 8928
Legal Tract8928
Legal Lot Number104
JurisdictionCONTRA COSTA CA
Township / Civil DivisionTASSAJARA
Census Block Group2
Census Block2005
Census Tract355123

Owner

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

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

Owner of Record2 Company Names on File
Mailing Address638 ARGYLE CT, SAN RAMON, CA 94582-5293
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleNov 24, 2010 · Amount on File
Deed SaleNov 24, 2010 · Amount on File
Prior SaleApr 13, 2007 · Amount on File
Deed Document Number2010265174
Last Transfer DateMar 1, 2013
Transfer Doc0000055791
Record UpdatedOct 29, 2026

January 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address638 ARGYLE CT, SAN RAMON, CA 94582-5293
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyFIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address638 ARGYLE CT, SAN RAMON, CA 94582-5293

Mortgage

Document Number0000019731
DateJan 21, 2021
Instrument2021-019731
Lender
NamePROVIDENT CU
TypeCredit Union
AddressREDWOOD CITY, CA 94065
Agreement
AmountAmount on Record

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$1,045,825 (+2%) Land $356,750 Building $689,075
2025$16,402.00 (+0.43%) Homeowner's exemption$1,025,319 (+4.04%) Land $349,755 Building $675,564
2023$16,331.00 (+2.12%) Homeowner's exemption$985,507 Land $336,175 Building $649,332
2022$15,992.00

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 62% of the US · lower than 77% of California
Wildfire Likelihood0.06% 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 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 638 locations within half a mile, as of December 31, 2025

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

May also be available: T-Mobile, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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