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Licensed General Engineering Contractors in Sonora, California

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

  • 40licensed general engineering contractors
  • 37active (Clear)
  • 7.5%with a suspension
  • 40%workers' comp exempt
  • 19.6 yrsmedian time licensed
  • 55%corp / LLC / partnership (45% sole owner)
  • 2new in the last 12 months
  • —change tracking began November 1, 2026

Sonora is home to 40 general engineering contractors in CSLB's license file, the most in Tuolumne County. 92.5% are Clear.

The share with a suspension (7.5%) is close to the Tuolumne County rate for the same license (6.9%). 40% report a workers' comp exemption, 4.6 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 19.6 years (more 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 Sonora

  1. Open the general engineering contractor's profile from the table below (or search Sonora 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 40 general engineering contractors in Sonora

Sonora 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 Sonora
Business nameLicense #StatusYearsWorkers' compBond
Kolpack Glenn H INC 287112 Clear 53 Exempt On file
California Gold Development Corporation 364660 Clear 48 Insured On file
Mc Connell Mike Construction 459611 Clear 42 Insured On file
Addis Construction CO 482521 Clear 41 Insured On file
Boyer Construction 509381 Clear 39 Insured On file
Silverado Estate Enterprises INC 526414 Clear 38 Exempt On file
Keagy Ken Excavating INC 538732 Clear 38 Insured On file
Dambacher James R Construction 560922 Clear 37 Insured On file
Lucas Building Corporation 561363 Clear 37 Insured On file
Olsen Excavation & Grading 565297 Clear 37 Insured On file
Njirich & Sons INC 573731 Clear 37 Insured On file
Wilsons Backhoe 613060 Clear 35 Exempt On file
Keegan V Kevin 695543 Clear 32 Exempt On file
Kolpack Bonnie 705053 Clear 31 Exempt On file
Ken's Asphalt 708310 Clear 31 Insured On file
Gentis Construction INC 738197 Clear 29 Insured On file
Precision Pump Service INC 742031 Clear 29 Insured On file
Burgess Matt Construction 826999 Clear 23 Exempt On file
Smci 885550 Clear 20 Insured On file
Wes - Coast Excavation 905465 Clear 19 Exempt On file
Baldwin Construction 946925 Clear 16 Exempt On file
Left Coast Land Clearing 956460 Clear 15 Insured On file
C C F G Construction 959915 Clear 15 Insured On file
G Seven 962744 Clear 15 Insured On file
Paul T Sutton 1014520 Clear 10 Exempt On file
Semsen John Landscaping CO INC 1024425 Clear 9 Insured On file
Lewellen Excavation 1033554 Clear 8 Insured On file
Sierra Construction 1046054 Clear 8 Insured On file
Smci / Obayashi Joint Venture 1053830 Clear 7 Exempt On file
Lundgren Systems General Engineering INC 1063347 Clear 6 Insured On file
Pacific Mountain Environmental & Construction 1078396 Clear 5 Exempt On file
Wise David N 1095446 Clear 4 Exempt On file
Cal Gold Construction Corporation 1105239 Clear 3 Insured On file
Pje Solutions INC 1116517 Clear 2 Insured On file
Vann Excavating INC 1127972 Clear 2 Exempt On file
Ccfg Electric 1149280 Clear <1 Exempt On file
Big Pine General Engineering Contracting INC 1159786 Clear <1 Exempt On file
Xtreme Construction 792294 Susp: contractor's bond 25 Exempt On file
Divine Matthew Construction 939550 Susp: workers' compensation 17 None On file
Foothill Excavation 1052961 Susp: workers' compensation 7 None 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 Sonora?

CSLB's current public file lists 40 general engineering contractors with a Sonora mailing address. 37 have a Clear status, and 90% 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 Tuolumne County, 92.5% of Sonora'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 Sonora, 55% of general engineering contractors list a policy, 40% claim an exemption and 5% show no current coverage. Confirm the policy with CSLB's workers' comp search before work starts. How to check workers' comp.

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