4040 Nelson Ave, Concord, CA 94520 Property Records

Contra Costa County property record for 4040 Nelson Ave, Concord, CA 94520 · Last verified July 2026

Property Highlights

Property Type	Industrial > Light Industrial (10% Improved Office Space; Machine Shop)
Year Built	Built 1989
Square Footage	188,299 sqft Gross Area
Lot Size	12.5 acres
Last Sale	$5,100,000 (2012)
Tax Bill	$427,631.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`159-430-037-6`
Alternative APN	`159-430-037`

Interior

Total Rooms	1 Rooms
Building Area	188,299 sqft Gross Area
1st Floor	188,299 sqft 1st Floor
Stories	1 Stories

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Lot Area	546,678 sqft

Location & Zoning

Street Address	4040 NELSON AVE
City	CONCORD
State	CA
Zip	94520-1200
Property Usage	Industrial Property Usage
Type	Industrial > Light Industrial (10% Improved Office Space; Machine Shop)
Legal Description	182PM10 PCL B
Legal Subdivision	SUBDIVISION MSC 405-01
Legal Tract	182PM10
Jurisdiction	CONTRA COSTA CA
Minor Civil Division	CENTRAL CONTRA COSTA
Census Blockgroup	1
Census Block	1029
Census Tract	315000

Owner

Source: Contra Costa County records · APN 159-430-037-6

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	180 GRAND AVE, 1400, OAKLAND, CA 94612-3752
Owner Type	Owner is a Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Aug 16, 2012 · Amount on Record
Deed Sale	Aug 16, 2012 · Amount on Record
Prior Sale	Oct 06, 2000 · Amount on Record
Deed Doc Number	2012197880
Prior Transfer Date	Sep 21, 2000
Prior Transfer Doc	0000219078
Record Refreshed	Sep 20, 2026

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	Concord City
Unified School District	Mount Diablo 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		$35,577,215 (+2%) Land $4,622,285 Building $30,954,930
2025	$427,631.00 (-5.43%)	$34,879,623 (+4.04%) Land $4,531,652 Building $30,347,971
2023	$452,165.00 (+6.75%)	$33,525,207 Land $4,355,684 Building $29,169,523
2022	$423,555.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.