645 Green St, Martinez, CA 94553 Property Records

Contra Costa County property record for 645 Green St, Martinez, CA 94553

Property Summary

Property Type	Medical Building
Details	3,104 sqft · built 1968
Lot Size	0.162 acres (7,050 sqft)
Owner	2 Trust Names on File
Last Sale	$1,100,000 (Apr 2006)
Tax Bill	$14,232 (2025)
Flood Zone	Zone AO (high risk)
APN	`373-201-003-2`

Property Details

APN / Parcel Number

Primary APN	`373-201-003-2`
Alternative APN	`373-201-003`

Interior

Stories	1 Story
Building Area	3,104 sqft Gross Area
1st Floor Area	3,104 sqft

Exterior

Year Built	Built 1968
Effective Year Built	Effective 1968
Lot Area	7,050 sqft (0.162 acres)

Location & Zoning

Street Address	645 GREEN ST
City	MARTINEZ
State	CA
Zip	94553-1633
Property Category	Commercial
Property Type	Commercial > Office > Medical Building
Legal Description	ORIGINAL SURVEY LOT 8 POR 7 BLK 32
Legal Subdivision	MARTINEZ
Legal Block	32
Legal Lot Number	8
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1038
Census Tract	316000

Owner

645 Green St, a commercial property, is held in a trust since October 2011.

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

Owner of Record	2 Trust Names on File
Mailing Address	5606 LA SALLE AVE, OAKLAND, CA 94611-3250
Owner Type	Company
Vesting	Trust

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 Names	2 Names on Deed
Last Sale	Apr 11, 2006 · Amount on File
Deed Sale	Apr 11, 2006 · Amount on File
Deed Document Number	2006111282
Last Transfer Date	Oct 11, 2011
Transfer Doc	0000253397
Record Updated	Oct 29, 2026

Tax Assessment & Valuation

The 2025 property tax bill for 645 Green St was $14,232.

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		$1,150,000 (+4.02%) Land $267,300 Building $882,700
2025	$14,232.00	$1,105,555 Land $255,600 Building $849,955
2023	$12,880.00 (+2.18%)	$1,014,070 Land $234,200 Building $779,870
2022	$12,605.00

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

Flood

FEMA maps place 645 Green St in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.

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 File 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

Wildfire risk around 645 Green St is moderate, ranking above 46% of the US, with a 0.08% annual chance of wildfire.

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

Wildfire Risk	Moderate above 46% of the US · lower than 72% of California
Wildfire Likelihood	0.08% 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