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Licensed General Engineering Contractors in Windsor, California

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

  • 25licensed general engineering contractors
  • 23active (Clear)
  • 8%with a suspension
  • 36%workers' comp exempt
  • 16.5 yrsmedian time licensed
  • 60%corp / LLC / partnership (40% sole owner)
  • 0new in the last 12 months
  • —change tracking began November 1, 2026

There are 25 general engineering contractors based in Windsor in CSLB's current file. 23 (92%) have a Clear status as of November 1, 2026.

The share with a suspension, 8%, is 2.2 points higher than the Sonoma County rate for the same license (5.8%). About 36% report a workers' comp exemption, roughly the statewide norm for general engineering contractors.

Experience varies: 68% have been licensed 10+ years and 0 are new this year (median 16.5 years, vs 18.5 statewide).

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 Windsor

  1. Look the company up by name or license number (search Windsor). On the profile, confirm three things: Clear status, the A license for this kind of work, and a contractor's bond on file.
  2. Before any money changes hands, verify the license on CSLB's own lookup. Our data comes from CSLB's weekly file, so a very recent change may not show here yet.
  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 25 general engineering contractors in Windsor

Windsor 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 Windsor
Business nameLicense #StatusYearsWorkers' compBond
Flum Construction 485669 Clear 40 Exempt On file
K & P Kelly INC 510770 Clear 39 Insured On file
R C Construction 525979 Clear 38 Exempt On file
Rebich Construction INC 675200 Clear 33 Insured On file
Waterworks Industries Incorporated 678182 Clear 33 Insured On file
Trans Tech Consultants 697833 Clear 32 Insured On file
R C X INC 715476 Clear 30 Insured On file
American Tank CO INC 794146 Clear 25 Insured On file
Mann Excavating INC 808408 Clear 24 Insured On file
Mann Excavating 834236 Clear 22 Insured On file
Amg Engineering 887119 Clear 20 Insured On file
Thompson John Enterprises Partnership 947071 Clear 16 Exempt On file
North Bay Construction Services 965651 Clear 15 Exempt On file
Galvan Underground Construction INC 988314 Clear 13 Insured On file
Elliff Tyler 1001865 Clear 11 Exempt On file
Daher Development INC 1019826 Clear 10 Insured On file
Snyder Construction INC 1022236 Clear 9 Exempt On file
Sousa Engineering 1038833 Clear 8 Exempt On file
Irwin Excavating Services INC 1072795 Clear 5 Exempt On file
Nor Cal Excavating & Trucking 1075175 Clear 5 Insured On file
American Radiant & Water Heating INC 1102680 Clear 3 Insured On file
Rose Valley Earthworks & Paving 1119803 Clear 2 Insured On file
Waterworks Industries LLC 1137599 Clear 1 Insured On file
P D K Construction 898793 Susp: contractor's bond 19 Exempt On file
Hammer Engineering LLC 1110818 Susp: liability insurance 3 Insured 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 Windsor?

CSLB's current public file lists 25 general engineering contractors with a Windsor mailing address. 23 have a Clear status, and 88% 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?

Look for A on the license. 25 businesses in Windsor hold it. Small jobs under $1,000 with no permit and no employees are exempt; everything else needs a license (details).

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 Windsor, 64% of general engineering contractors list a policy, 36% 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.

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