Peterson Mechanical INC, B General Building Contractor in Sonoma, CA
Peterson Mechanical INC operating as a corporation holds an active California contractor license (CSLB #171486), valid through Jun 30, 2026. First issued in 1957, the license has been on the CSLB roster for 69 years. It carries 9 CSLB classifications: B General Building Contractor, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-16 Fire Protection Contractor, C-20 HVAC Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, C-38 Refrigeration Contractor, C-42 Sanitation System Contractor, and C-43 Sheet Metal Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Old Republic Insurance Company. The business is based in Sonoma, in Sonoma County, California.
- License Number
- 171486
- Issued
- Nov 7, 1957
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC1016721
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Old Republic Insurance Company
- Policy Number
- MWC30716126
- Effective
- Apr 1, 2026
- Expires
- Apr 1, 2027
This contractor warrants a closer look before contracting:
- License expires in 3 days
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Peterson Mechanical INC licensed in California?
Yes. Peterson Mechanical INC holds California Contractors State License Board license number 171486, which is active and in good standing. The license was first issued on November 7, 1957. It is valid through June 30, 2026.
What does Peterson Mechanical INC specialize in?
Peterson Mechanical INC is licensed for 9 CSLB classifications: B General Building Contractor, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-16 Fire Protection Contractor, C-20 HVAC Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, C-38 Refrigeration Contractor, C-42 Sanitation System Contractor, and C-43 Sheet Metal Contractor.
Where is Peterson Mechanical INC headquartered?
Peterson Mechanical INC is headquartered at P O Box 450, Sonoma, CA 95476, in Sonoma County, California.
Does Peterson Mechanical INC have an active surety bond on file with CSLB?
Yes. Peterson Mechanical INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Peterson Mechanical INC carry workers' compensation coverage?
Yes. Peterson Mechanical INC carries active workers' compensation coverage through Old Republic Insurance Company.
How do I verify Peterson Mechanical INC's contractor license?
You can verify Peterson Mechanical INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=171486.
- License issuedNov 7, 1957
- Bond activeJan 1, 2023
- WC coverage startsApr 1, 2026
- License expiresJun 30, 2026
- WC expiresApr 1, 2027
- Ongaro & Sons#215233Petaluma·C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
- Masterson Bryan Enterprises#271933Petaluma·A General Engineering Contractor
- C B S Plumbing & Heating INC#294171Santa Rosa·C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
- Eddinger Enterprises INC#301487Healdsburg·B General Building Contractor
- Etchell Bob Plumbing & Heating#267201Healdsburg·C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
- Holden Ralph & CO#307640Healdsburg·A General Engineering Contractor
- Kozy Homes#262090Petaluma·B General Building Contractor
- Tri-County Heating and Sheet Metal INC#212733Petaluma·C-20 HVAC Contractor
Working a California job with Peterson Mechanical INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Peterson Mechanical INC? Claim or correct this profile