Humboldt County construction: bids, contractors and projects
Caltrans lettings, licensed contractors and project news for Humboldt County, California, updated daily from public records.
Humboldt County is part of our District 1 (Eureka) coverage area and falls under Caltrans District 1 (Eureka), headquartered in Eureka. CSLB's license file lists 1,052 construction contractors with a Humboldt County address: 700 licensed General Engineering (A) and General Building (B) contractors and 352 licensed specialty (C) and Residential Remodeling (B-2) contractors. The largest single group is CSLB General Building (B) contractor (582). Most are based in Eureka, Mc Kinleyville, Arcata.
Caltrans's advertised letting schedule currently has 2 upcoming proposals in Humboldt County, the next on Nov 5, 2026.
Upcoming Caltrans lettings in Humboldt County
| Letting | Proposal | Major work type | Documents |
|---|---|---|---|
| Nov 5, 2026 | 01-0H6414 | Construct bridge, roadway, streambed, delineation, remove culvert 路 License A,C-8,C-12 | Proposal |
| Dec 3, 2026 | 01-0H2464 | Install welded steel pipe; structural concrete; & alt pipe culvert 路 License A,C-8,C-12,C-42 | Proposal |
Contractors based in Humboldt County
Counts come from the Contractors State License Board's License Master file (businesses whose license status is Clear and whose address is in Humboldt County). Firms holding a General Engineering (A) or General Building (B) classification are counted as general contractors; the rest as specialty contractors.
- CSLB General Building (B) contractor: 582
- CSLB specialty (C) contractor: 348
- CSLB General Engineering (A) contractor: 118
- CSLB Residential Remodeling (B-2) contractor: 4
Find Humboldt County subcontractors Find Humboldt County general contractors
Humboldt County project news
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How to bid public work in Humboldt County
State highway work in Humboldt County is let by Caltrans; the county is in Caltrans District 1 (Eureka) (Caltrans districts). Bidders need a CSLB license and, for public works, DIR public works contractor registration. See how to bid Caltrans contracts.
State agencies buy through Cal eProcure (see the supplier registration guide).
Statewide rules that apply here
- Bidding Caltrans: a CSLB license, DIR registration, a bidder ID and a digital ID
- California mechanics liens: 20 days to give notice, 90 days to record, 90 days to sue
Nearby counties
District 1 (Eureka) region: Del Norte 路 Lake 路 Mendocino
Also in Caltrans District 1: (same as above)