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Licensed General Engineering Contractors in Petaluma, California

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

  • 66licensed general engineering contractors
  • 61active (Clear)
  • 7.6%with a suspension
  • 33.3%workers' comp exempt
  • 19.5 yrsmedian time licensed
  • 63.6%corp / LLC / partnership (36.4% sole owner)
  • 4new in the last 12 months
  • —change tracking began November 1, 2026

CSLB's public data lists 66 general engineering contractors with a mailing address in Petaluma, and 61 of them (92.4%) show a Clear primary status.

33.3% report a workers' comp exemption, 2.1 points lower than the statewide figure for general engineering contractors (35.4%), so many of these businesses say they have no employees. The share with a suspension, 7.6%, is 1.8 points higher than the Sonoma County rate for the same license (5.8%).

The median general engineering contractor here has held a license for 19.5 years (more than the statewide median of 18.5), and 4 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 Petaluma

  1. Look the company up by name or license number (search Petaluma). On the profile, confirm three things: Clear status, the A license for this kind of work, and a contractor's bond on file.
  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).

50 of 66 general engineering contractors in Petaluma

Petaluma 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 Petaluma
Business nameLicense #StatusYearsWorkers' compBond
Mc Lellan W K CO 240701 Clear 60 Insured On file
Curran Environmental Services INC 269122 Clear 55 Insured On file
Masterson Bryan Enterprises 271933 Clear 55 Insured On file
Aguiar Construction 319589 Clear 50 Exempt On file
Goebel Construction INC 348449 Clear 48 Insured On file
William James Gargan 351395 Clear 48 Exempt On file
Bertotti Anthony Landscaping INC 373488 Clear 47 Insured On file
Paul Michael Company INC 386001 Clear 46 Insured On file
Rjohn Development CO 415555 Clear 44 Exempt On file
De Rutte Builders Corporation 416695 Clear 44 Insured On file
Bottorff Thomas E General Contractor 418014 Clear 44 Exempt On file
Nelson Construction 601031 Clear 36 Insured On file
Goebel Paving Grading & Underground 638716 Clear 34 Exempt On file
Machado Bros INC 639884 Clear 34 Insured On file
Custom Tractor Service 670956 Clear 33 Insured On file
Sonoma-Marin Construction 690380 Clear 32 Insured On file
Aztrack Construction Corporation 704127 Clear 31 Insured On file
Allphase Paving 706652 Clear 31 Insured On file
A B C Asphalt 732314 Clear 29 Insured On file
All Bay Drilling INC 734075 Clear 29 Insured On file
C Hardy General Engineering Contractor INC 745509 Clear 28 Insured On file
Black Point Excavation 765792 Clear 27 Exempt On file
A S B Steel 777621 Clear 26 Exempt On file
Felton Mackalie Susan 777503 Clear 26 Exempt On file
Denco 821372 Clear 23 Exempt On file
H & R Building Services INC 827266 Clear 23 Exempt On file
Eames Construction INC 845521 Clear 22 Insured On file
Arntz Builders INC 856393 Clear 21 Insured On file
Sorensen Paul H Construction 891518 Clear 19 Exempt On file
Team Ghilotti INC 895384 Clear 19 Insured On file
Chiapetta Victor L 898431 Clear 19 Exempt On file
E F Brett & Company INC 924636 Clear 18 Insured On file
Damazio Excavating INC 928048 Clear 17 Insured On file
Galea Construction 929071 Clear 17 Insured On file
Wildcat Engineering 951203 Clear 16 Insured On file
Ama Diversfied Construction Group 956105 Clear 15 Insured On file
Arellanes Aaron Marion 973357 Clear 14 Exempt On file
North Bay Grading and Paving 975027 Clear 14 Insured On file
Lind Marine Incorporated 1000690 Clear 11 Insured On file
Eleven Engineering INC 1003685 Clear 11 Insured On file
General Souza Engineering 1014535 Clear 10 Exempt On file
Pacific Dirtworx 1015271 Clear 10 Insured On file
Precision Concrete Construction LLC 1032112 Clear 9 Insured On file
J C General Engineering Contractor INC 1036980 Clear 8 Insured On file
Rise Rigging LLC 1051954 Clear 7 Insured On file
Tap Construction 1053209 Clear 7 Insured On file
West Biofuels LLC 1065322 Clear 6 Insured On file
D & M Underground Construction INC 1071259 Clear 5 Insured On file
C Merz Excavating & Grading INC 1080067 Clear 5 Insured On file
Mountain General Engineering LLC 1080909 Clear 5 Insured On file

See all 66 general engineering contractors in Petaluma

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 Petaluma?

CSLB's current public file lists 66 general engineering contractors with a Petaluma mailing address. 61 have a Clear status, and 90.9% 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?

These firms hold CSLB's A (General Engineering Contractor) license for engineered fixed works. Any job of $1,000 or more in labor and materials needs a licensed contractor. Read our guide to the $1,000 rule.

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

Each profile shows the workers' comp type, insurer and policy dates from CSLB's file. Among Petaluma general engineering contractors, 33.3% are exempt (no employees), 63.6% insured and 3% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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