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9507 Alcosta Blvd, San Ramon, CA 94583 Property Records

Contra Costa County property record for 9507 Alcosta Blvd, San Ramon, CA 94583

Property Summary

Property TypeSingle Family Home
Details3 bd · 2 ba · 2,170 sqft · built 1977
Lot Size0.215 acres (9,350 sqft)
Owner2 Individual Names on File
Last Sale$1,610,000 (Mar 2024)
Tax Bill$18,551 (2025)
Deeds & MortgagesMar 2024 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN210-673-012-6

Property Details

APN / Parcel Number

Primary APN210-673-012-6
Alternative APN
  • 210-673-012

Interior

Bedrooms3 Beds
Full Baths2 Baths
Total Rooms10 Rooms
Stories1 Story
Building Area2,170 sqft Living Area
1st Floor Area2,170 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1977
Effective Year BuiltEffective 1998
Architectural StyleRanch
Exterior MaterialStucco
Roof MaterialWood Shingle
Lot Area9,350 sqft (0.215 acres)
Lot Dimensions110 ft deep x 85 ft wide
View / LotGolf Course
Garage TypeAttached
Garage Area674 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address9507 ALCOSTA BLVD
CitySAN RAMON
StateCA
Zip94583-3602
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT04440 L0003 B EX MR
Legal SubdivisionSUBDIVISION 4440
Legal Tract04440
Legal Lot Number3
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2005
Census Tract345103

Owner

9507 Alcosta Blvd is owned and occupied by two individuals who bought it in March 2024.

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

Owner of Record2 Individual Names on File
Mailing Address9507 ALCOSTA BLVD, SAN RAMON, CA 94583-3602
OccupancyOwner Occupied
Owner TypeIndividual
VestingCommunity Property

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

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMar 5, 2024 · Amount on File
Deed SaleMar 5, 2024 · Amount on File
Prior SaleJun 20, 2006 · Amount on File
Deed Document Number202420422
Prior Transfer DateOct 23, 1997
Prior Transfer Doc0000208018
Record UpdatedOct 29, 2026

March 2024: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 5, 2024
Property Address9507 ALCOSTA BLVD, SAN RAMON, CA 94583-3602
Document Number0000020422
Map ReferenceMB 176 PG 37
Instrument DateFeb 27, 2024
Instrument2024-020422
Transaction TypeTransfer
Record UpdatedMar 14, 2024
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property with Right of Survivorship
Address9507 ALCOSTA BLVD, SAN RAMON, CA 94583-3602

Mortgage

Document Number0000020423
DateMar 5, 2024
Instrument2024-020423
Lender
NameALLIANT CU
TypeCredit Union
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueApr 1, 2054
Interest
Rate TypeAdjustable Rate
Rate6.5%
Type Change DateApr 1, 2029
Change Frequency6 Months
Min Rate At Change4.5%
Max Rate At Change8.5%
Max Rate11.5%

Tax Assessment & Valuation

The 2025 property tax bill for 9507 Alcosta Blvd was $18,551 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$1,675,044 (+2%) Land $946,764 Building $728,280
2025$18,551.00 Homeowner's exemption$1,642,200 Land $928,200 Building $714,000
2023$12,377.00 (+0.74%) Homeowner's exemption$1,070,502 Land $770,371 Building $300,131
2022$12,286.00

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

Flood

FEMA maps place 9507 Alcosta Blvd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2022.

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
Flood Insurance CostPremium on File
median of 10 policies
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies10 in force
Nearby Flood Claims1 (2022)
Most Recent ClaimDec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides

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

Wildfire risk around 9507 Alcosta Blvd 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 67% of the US · lower than 81% of California
Wildfire Likelihood0.04% 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 292 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 2,000
Verizon
Fixed Wireless		1,000 / 75
Unwired
Fixed Wireless		300 / 25
Etheric Networks
Fixed Wireless		250 / 100
T-Mobile
Fixed Wireless		100 / 20

May also be available: AT&T.

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