821 Main St, Martinez, CA 94553 Property Records

Contra Costa County property record for 821 Main St, Martinez, CA 94553

Property Summary

Property Type	Retail Stores (Personal Services, Photography, Travel)
Details	1,674 sqft · built 1972
Lot Size	0.061 acres (2,646 sqft)
Owner	Company Name on Record
Last Sale	$425,000 (Mar 2017)
Tax Bill	$8,464 (2025)
Deeds & Mortgages	Mar 2017 Sale
Flood Zone	Zone AO (high risk)
APN	`373-161-009-7`

Property Details

APN / Parcel Number

Primary APN	`373-161-009-7`
Alternative APN	`373-161-009`

Interior

Stories	1 Story
Building Area	1,674 sqft Gross Area
1st Floor Area	1,674 sqft

Exterior

Year Built	Built 1972
Effective Year Built	Effective 1972
Lot Area	2,646 sqft (0.061 acres)

Location & Zoning

Street Address	821 MAIN ST
City	MARTINEZ
State	CA
Zip	94553-1225
Property Category	Commercial
Property Type	Commercial > Retail > Retail Stores (Personal Services, Photography, Travel)
Legal Description	ADDL SURVEY POR LOT 7 BLK 322
Legal Subdivision	MARTINEZ
Legal Block	322
Legal Lot Number	7
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1030
Census Tract	316000

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	Company Name on Record
Mailing Address	8383 WILSHIRE BLVD, 815, BEVERLY HILLS, CA 90211-2445
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 1, 2017 · Amount on Record
Deed Sale	Mar 1, 2017 · Amount on Record
Prior Sale	Apr 29, 2003 · Amount on Record
Deed Document Number	201736618
Record Updated	Oct 29, 2026

March 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 1, 2017
Property Address	819 MAIN ST, MARTINEZ, CA 94553
Document Number	0000036618
Instrument Date	Feb 27, 2017
Instrument	36618
Transaction Type	Transfer
Record Updated	Mar 20, 2017
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transaction

Amount	Amount Recorded
Tax	$467.50
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	15260 VENTURA BLVD #1750 SHERMAN OAKS CA 914035336, 1750, SHERMAN OAKS, CA 91403-5336

Tax Assessment & Valuation

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

Year	Tax Bill	Assessed Value
2026		$503,107 (+2%) Land $118,377 Building $384,730
2025	$8,464.00 (+33.21%)	$493,243 (+4.04%) Land $116,056 Building $377,187
2023	$6,354.00 (+1%)	$474,092 Land $111,550 Building $362,542
2022	$6,291.00

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 AO high risk · sheet flow 1–3 ft
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	Varies along the reach; see FIRM
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on Record median of 42 policies
Nearby Flood Policies	42 in force
Nearby Flood Claims	20 (1982–2017)
Claims Outside the SFHA	4 of 20
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, And Mudslides
Claims by Event	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

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 64% of the US · lower than 78% of California
Wildfire Likelihood	0.04% annual chance
Exposure	Indirect within 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	CITY OF MARTINEZ serves 31,015 people · EPA ID CA0710006
Water Source	Purchased surface water from CONTRA COSTA WATER DISTRICT
Last State Inspection	Oct 2025
Lead	Under 1 ppb (2023–2025) 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 371 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Astound Broadband Fiber · Cable in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 2,000
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
AT&T Fixed Wireless · DSL	100 / 20
T-Mobile Fixed Wireless	100 / 20