San Luis Obispo County construction: bids, contractors and projects
Caltrans lettings, licensed contractors and project news for San Luis Obispo County, California, updated daily from public records.
San Luis Obispo County is part of our District 5 (San Luis Obispo) coverage area and falls under Caltrans District 5 (San Luis Obispo), headquartered in San Luis Obispo. CSLB's license file lists 3,160 construction contractors with a San Luis Obispo County address: 1,707 licensed General Engineering (A) and General Building (B) contractors and 1,453 licensed specialty (C) and Residential Remodeling (B-2) contractors. The largest single group is CSLB specialty (C) contractor (1,442). Most are based in Paso Robles, Atascadero, San Luis Obispo.
Caltrans's advertised letting schedule currently has 2 upcoming proposals in San Luis Obispo County, the next on Nov 12, 2026.
Upcoming Caltrans lettings in San Luis Obispo County
| Letting | Proposal | Major work type | Documents |
|---|---|---|---|
| Nov 12, 2026 | 05A3037 | *Certified SB/DVBE only* IFPQ HVAC Preventative Maintenance and Repair Services in San… · License C-20 | Proposal |
| Nov 18, 2026 | 05-1K6804 | Construct maintenance station · License A,B,C | Proposal |
Contractors based in San Luis Obispo County
Counts come from the Contractors State License Board's License Master file (businesses whose license status is Clear and whose address is in San Luis Obispo County). Firms holding a General Engineering (A) or General Building (B) classification are counted as general contractors; the rest as specialty contractors.
- CSLB specialty (C) contractor: 1,442
- CSLB General Building (B) contractor: 1,353
- CSLB General Engineering (A) contractor: 354
- CSLB Residential Remodeling (B-2) contractor: 11
Find San Luis Obispo County subcontractors Find San Luis Obispo County general contractors
San Luis Obispo County project news
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How to bid public work in San Luis Obispo County
State highway work in San Luis Obispo County is let by Caltrans; the county is in Caltrans District 5 (San Luis Obispo) (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 5 (San Luis Obispo) region: Monterey · San Benito · Santa Barbara · Santa Cruz
Also in Caltrans District 5: (same as above)