Imperial County construction: bids, contractors and projects
Caltrans lettings, licensed contractors and project news for Imperial County, California, updated daily from public records.
Imperial County is part of our District 11 (San Diego) coverage area and falls under Caltrans District 11 (San Diego), headquartered in San Diego. CSLB's license file lists 380 construction contractors with a Imperial County address: 187 licensed General Engineering (A) and General Building (B) contractors and 193 licensed specialty (C) and Residential Remodeling (B-2) contractors. The largest single group is CSLB specialty (C) contractor (192). Most are based in El Centro, Imperial, Calexico.
Caltrans's advertised letting schedule currently has 3 upcoming proposals in Imperial County, the next on Nov 3, 2026.
Upcoming Caltrans lettings in Imperial County
| Letting | Proposal | Major work type | Documents |
|---|---|---|---|
| Nov 3, 2026 | 11A4441 | IFB Guardrail Services, Imperial and San Diego Counties 路 License A,C-13,C-31,C-32 | Proposal |
| Nov 5, 2026 | 59A1414 | IFB Geotechnical Exploration Drilling - Southern CA 路 License A,C-31,C-57 | Proposal |
| Nov 12, 2026 | 11A4303 | IFB - Hazardous Waste Disposal Services in San Diego and Imperial Counties 路 License A,HAZ | Proposal |
Contractors based in Imperial County
Counts come from the Contractors State License Board's License Master file (businesses whose license status is Clear and whose address is in Imperial 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: 192
- CSLB General Building (B) contractor: 142
- CSLB General Engineering (A) contractor: 45
- CSLB Residential Remodeling (B-2) contractor: 1
Find Imperial County subcontractors Find Imperial County general contractors
Imperial County project news
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How to bid public work in Imperial County
State highway work in Imperial County is let by Caltrans; the county is in Caltrans District 11 (San Diego) (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 11 (San Diego) region: San Diego
Also in Caltrans District 11: (same as above)