4790 Blum Rd, Martinez, CA 94553 Property Records

Contra Costa County property record for 4790 Blum Rd, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	2 bd · 2 ba · 1,868 sqft · built 1947
Lot Size	0.22 acres (9,583 sqft)
Owner	2 Individual Names on Record
Last Sale	$851,000 (May 2022)
Tax Bill	$9,421 (2025)
Deeds & Mortgages	May 2020 Mortgage May 2022 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`159-200-011-9`

Property Details

APN / Parcel Number

Primary APN	`159-200-011-9`
Alternative APN	`159-200-011`

Interior

Bedrooms	2 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,868 sqft Living Area
1st Floor Area	1,412 sqft
2nd Floor Area	456 sqft

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1980
Lot Area	9,583 sqft (0.22 acres)
Garage Type	Attached
Garage Area	252 sqft
Parking Spaces	1 Parking Space

Location & Zoning

Street Address	4790 BLUM RD
City	MARTINEZ
State	CA
Zip	94553-3629
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R7
Legal Description	POR RO LAS JUNTAS
Legal Subdivision	LAS JUNTAS RHO
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1019
Census Tract	320004

Owner

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

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

Owner of Record	2 Individual Names on Record
Mailing Address	4790 BLUM RD, MARTINEZ, CA 94553-3629
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
May 26, 2020	Deed of Trust, Mortgage · Conventional Mortgage COMMERCE HOME MORTGAGE LLC
May 13, 2022	Grant Deed, Transfer · Conventional Mortgage LENDUS LLC
Jun 18, 2018	Grant Deed, Transfer · Conventional Mortgage COMMERCE MORTGAGE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 13, 2022 · Amount on Record
Deed Sale	May 13, 2022 · Amount on Record
Prior Sale	Jun 18, 2018 · Amount on Record
Deed Document Number	202282356
Prior Transfer Date	Jan 25, 2007
Prior Transfer Doc	0000033915
Record Updated	Sep 20, 2026

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4790 BLUM RD, MARTINEZ, CA 94553-3629
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000099079
Date	May 26, 2020
Instrument	2020-099079

Lender

Name	COMMERCE HOME MORTGAGE LLC
Type	Mortgage Company
Address	IRVINE, CA 92606

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2050

May 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	May 13, 2022
Property Address	4790 BLUM RD, MARTINEZ, CA 94553-3629
Document Number	0000082356
Instrument Date	Apr 29, 2022
Instrument	2022-082356
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4790 BLUM RD, MARTINEZ, CA 94553-3629

Mortgage

Document Number	0000082357
Date	May 13, 2022
Instrument	2022-082357

Lender

Name	LENDUS LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2052

June 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 18, 2018
Property Address	4790 BLUM RD, MARTINEZ, CA 94553-3629
Document Number	0000096340
Instrument Date	Jun 7, 2018
Instrument	2018-096340
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE COMP

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4790 BLUM RD, MARTINEZ, CA 94553-3629

Mortgage

Document Number	0000096341
Date	Jun 18, 2018
Instrument	2018-096341

Lender

Name	COMMERCE MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2048

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Unified School District	Mount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$750,000 (-) Land $573,738 Building $176,262
2025	$9,421.00 (+3.81%)	$750,000 (+3.16%) Land $573,738 Building $176,262
2023	$9,075.00 (+27.51%)	$727,000 Land $556,000 Building $171,000
2022	$7,117.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	4 in force
Nearby Flood Claims	1 (2017)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, 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

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

Wildfire Risk	Low lower than 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None 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 System	CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003
Water Source	Surface water
Last State Inspection	Jan 2022
Lead	Under 1 ppb (2026–2028) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 244 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Astound Broadband Fiber · Cable in parts of the area	1,500 / 1,500
Unwired Fixed Wireless	300 / 25
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, Verizon.

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