501 Main St, Martinez, CA 94553 Property Records

Contra Costa County property record for 501 Main St, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property Type	Retail Stores (Personal Services, Photography, Travel)
Details	5,000 sqft · built 1929
Lot Size	0.115 acres (5,000 sqft)
Owner	Company Name on File
Last Sale	$1,432,500 (Jan 2021)
Tax Bill	$23,404 (2025)
Deeds & Mortgages	Jan 2021 Sale
Flood Zone	Zone AO (high risk)
APN	`373-223-006-9`

Property Details

APN / Parcel Number

Primary APN	`373-223-006-9`
Alternative APN	`373-223-006`

Interior

Total Rooms	2 Rooms
Stories	1 Story
Building Area	5,000 sqft Gross Area
1st Floor Area	5,000 sqft

Exterior

Year Built	Built 1929
Effective Year Built	Effective 1965
Lot Area	5,000 sqft (0.115 acres)

Location & Zoning

Street Address	501 MAIN ST
City	MARTINEZ
State	CA
Zip	94553-1127
Property Category	Commercial
Property Type	Commercial > Retail > Retail Stores (Personal Services, Photography, Travel)
Legal Description	ORIGINAL SURVEY OF MTZ LOT 5 BLK 19
Legal Subdivision	TOWN MARTINEZ
Legal Block	19
Legal Lot Number	5
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1027
Census Tract	316000

Owner

Source: Contra Costa County records · APN 373-223-006-9

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 Record	Company Name on File
Mailing Address	3550 WILLOW PASS RD, CONCORD, CA 94519-1783
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jan 06, 2021 · Amount on Record
Deed Sale	Jan 06, 2021 · Amount on Record
Prior Sale	Apr 29, 2014 · Amount on Record
Deed Document Number	20213619
Prior Transfer Date	Aug 11, 2006
Prior Transfer Doc	0000260828
Record Updated	Sep 20, 2026

January 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 06, 2021
Property Address	501 MAIN ST, MARTINEZ, CA 94553-1127
Document Number	0000003619
Instrument Date	Dec 31, 2020
Instrument	3619
Transaction Type	Transfer
Record Updated	Jan 15, 2021
Title Company	NORTH AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$1,576.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	3550 WILLOW PASS RD CONCORD CA 945191783, CONCORD, CA 94519-1783

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Martinez City
Unified School District	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value
2026		$1,581,372 (+2%) Land $477,292 Building $1,104,080
2025	$23,404.00 (+10.91%)	$1,550,366 (+4.04%) Land $467,934 Building $1,082,432
2023	$21,101.00 (+0.73%)	$1,490,164 Land $449,764 Building $1,040,400
2022	$20,948.00

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 060133160001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone AO sheet flow 1–3 ft
Special Flood Hazard Area	Yes
Flood Hazard	High
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	Varies along the reach; see FIRM
Flood Insurance Requirement	Required (federally backed mortgages)
Flood Insurance Cost	Premium on Record median of 42 individual NFIP policies nearby
Nearby Flood Policies	42 in force
Nearby Flood Claims	20 (1982–2017)
Claims Outside the SFHA	4 of 20
Most Recent Claim	Jan 2017, rainfall accumulation, Severe Winter Storms, Flooding, And Mudslides
Claims By Storm	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 3 claims Coastal Storms, Floods, Slides & Tornadoes, Mar 1983 · 5 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 3 claims

Wildfire

Wildfire Risk	Moderate above 46% of the US · above 27% of California
Wildfire Likelihood	About 1 in 1,282 per year
Exposure	Indirect within 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 371 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Radiate Holdings	Fiber	5,000 / 5,000
Xfinity	Cable	2,000 / 2,000
Unwired	Fixed Wireless	300 / 25
Verizon	Fixed Wireless	300 / 20
AT&T	Fixed Wireless	100 / 20
T-Mobile USA	Fixed Wireless	100 / 20
AT&T	DSL	100 / 20

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