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4750 Blum Rd, Martinez, CA 94553 Property Records

Contra Costa County property record for 4750 Blum Rd, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details4 bd · 4 ba · 2,825 sqft · built 1953
Lot Size0.18 acres (7,840 sqft)
Owner2 Individual Names on File
Last Sale$910,000 (Oct 2024)
Tax Bill$11,674 (2025)
Deeds & MortgagesJul 2022 Mortgage
Mar 2021 Sale & Mortgage
+ 1 more
Flood ZoneZone X (minimal risk)
APN159-190-030-1

Property Details

APN / Parcel Number

Primary APN159-190-030-1
Alternative APN
  • 159-190-030

Interior

Bedrooms4 Beds
Full Baths4 Baths
Total Rooms10 Rooms
Stories1 Story
Building Area2,825 sqft Living Area
Gross Area3,303 sqft
1st Floor Area1,484 sqft
Basement Area152 sqft

Exterior

Year BuiltBuilt 1953
Effective Year BuiltEffective 1985
Lot Area7,840 sqft (0.18 acres)
Garage TypeAttached
Garage Area478 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address4750 BLUM RD
CityMARTINEZ
StateCA
Zip94553-3640
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionPOR RO LAS JUNTAS
Legal SubdivisionRANCHO LAS JUNTAS
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group1
Census Block1010
Census Tract320004

Owner

Source: Contra Costa County records · APN 159-190-030-1

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 Record2 Individual Names on File
Mailing Address4750 BLUM RD, MARTINEZ, CA 94553-3640
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Jul 11, 2022Deed of Trust, Mortgage · Conventional Mortgage
UNITED WHOLESALE MORTGAGE
Mar 19, 2021Grant Deed, Transfer · Stand-Alone First Mortgage
MARK S JONES 1999 TRUST
Nov 08, 2017Grant Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleOct 04, 2024 · Amount on Record
Deed SaleOct 04, 2024 · Amount on Record
Prior SaleMar 19, 2021 · Amount on Record
Deed Document Number202498085
Prior Transfer DateApr 08, 2016
Prior Transfer Doc0000088272
Record UpdatedSep 20, 2026

July 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address4750 BLUM RD, MARTINEZ, CA 94553-3640
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyCHICAGO TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address4750 BLUM RD, MARTINEZ, CA 94553-3640

Mortgage

Document Number0000111144
DateJul 11, 2022
Instrument2022-111144
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
AddressPONTIAC, MI 48341
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueAug 01, 2052

March 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 19, 2021
Property Address4750 BLUM RD, MARTINEZ, CA 94553-3640
Document Number0000084370
Instrument DateMar 17, 2021
Instrument2021-084370
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyTWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATIONAL TITLE INS CO

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Notice of Default
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address85 TERRA BELLA DR, WALNUT CREEK, CA 94596-6144

Mortgage

Document Number0000084371
DateMar 19, 2021
Instrument2021-084371
Lender
NameMARK S JONES 1999 TRUST
TypeNon-Lending Institution
Agreement
TypeStand-Alone First Mortgage
AmountAmount Recorded

November 2017: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 08, 2017
Property Address4750 BLUM RD, MARTINEZ, CA 94553-3640
Document Number0000210477
Instrument DateMay 13, 2016
Instrument210477
Transaction TypeTransfer
Record UpdatedNov 14, 2017
Title CompanyATTORNEY ONLY

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address15 LA SALLE DR MORAGA CA 945561509, MORAGA, CA 94556-1509

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
Unified School DistrictMartinez 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$928,200 (+2%) Land $408,000 Building $520,200
2025$11,674.00 (+38.07%)$910,000 (+38.59%) Land $400,000 Building $510,000
2023$8,455.00 (+18.42%)$656,614 Land $234,090 Building $422,524
2022$7,140.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133200041, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies4 in force
Nearby Flood Claims1 (2017)
Claims Outside the SFHA1 of 1
Most Recent ClaimJan 2017, rainfall accumulation, Severe Winter Storms, Flooding, And Mudslides

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 244 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
XfinityCable2,000 / 250
Radiate HoldingsFiber1,500 / 1,500
UnwiredFixed Wireless300 / 25
T-Mobile USAFixed Wireless100 / 20

May also be available at this address: AT&T, Radiate Holdings, Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.

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