Independent site · Not affiliated with CSLB or any state agency
Contractor LookoutCalifornia

Licensed General Engineering Contractors in Antioch, California

Updated November 1, 2026 from CSLB's public license file · A General Engineering Contractor

  • 21licensed general engineering contractors
  • 21active (Clear)
  • 0%with a suspension
  • 42.9%workers' comp exempt
  • 13.3 yrsmedian time licensed
  • 76.2%corp / LLC / partnership (23.8% sole owner)
  • 2new in the last 12 months
  • —change tracking began November 1, 2026

There are 21 general engineering contractors based in Antioch in CSLB's current file. 21 (100%) have a Clear status as of November 1, 2026.

The share with a suspension, 0%, is 2.3 points lower than the Contra Costa County rate for the same license (2.3%). 42.9% report a workers' comp exemption, 7.5 points higher than the statewide figure for general engineering contractors (35.4%), so many of these businesses say they have no employees.

The median general engineering contractor here has held a license for 13.3 years (less than the statewide median of 18.5), and 2 licenses were issued in the last 12 months.

These firms hold CSLB's A (General Engineering Contractor) license for engineered fixed works. See the A General Engineering Contractor guide for what the license covers.

How to check a general engineering contractor's license in Antioch

  1. Open the general engineering contractor's profile from the table below (or search Antioch listings by name). Check that A appears among its classifications and that the primary status reads Clear. What A covers.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

All 21 general engineering contractors in Antioch

Antioch general engineering contractors sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed general engineering contractors in Antioch
Business nameLicense #StatusYearsWorkers' compBond
Stroer & Graff INC 397082 Clear 45 Insured On file
Vortex Marine Construction INC 649452 Clear 34 Insured On file
Drill Tech Drilling & Shoring INC 745354 Clear 28 Insured On file
Otb Construction 791845 Clear 25 Insured On file
Rudolph & Sons 813850 Clear 24 Exempt On file
A & A Consulting Engineers 864170 Clear 21 Exempt On file
Tidal Marine Construction INC 893867 Clear 19 Insured On file
Priith Engineering 896523 Clear 19 Exempt On file
Andre's Mechanical and General Engineering INC 924701 Clear 18 Exempt On file
T N B Construction 947604 Clear 16 Exempt On file
Harrison Industrial Services INC 985256 Clear 13 Exempt On file
Vadnais Trenchless Services INC 997903 Clear 12 Insured On file
Diamond Petroleum Services INC 1005444 Clear 11 Insured On file
Plant Reclamation 1039599 Clear 8 Insured On file
H V USA Enterprises 1092514 Clear 4 Insured On file
Bayside Trenchless INC 1120949 Clear 2 Insured On file
Conco Services LLC 1127176 Clear 2 Insured On file
Drill Tech - Obayashi Joint Venture 1129214 Clear 2 Exempt On file
Dhr General Construction Corp 1131054 Clear 1 Insured On file
Stier Engineering 1148360 Clear <1 Exempt On file
Hydro Kingz INC 1151169 Clear <1 Exempt On file

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed general engineering contractors are in Antioch?

CSLB's current public file lists 21 general engineering contractors with a Antioch mailing address. 21 have a Clear status, and 90.5% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a general engineering contractor need in California?

CSLB issues the A General Engineering Contractor classification for this work. In Contra Costa County, 100% of Antioch's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

How do I check a general engineering contractor's workers' comp?

Open the contractor's profile here to see the workers' comp type and insurer from CSLB's file. In Antioch, 57.1% of general engineering contractors list a policy, 42.9% claim an exemption and 0% show no current coverage. Confirm the policy with CSLB's workers' comp search before work starts. How to check workers' comp.

Related

General Engineering Contractors in nearby cities

More general engineering contractors lists in Contra Costa County

Other licensed trades in Antioch

Guides