Diehl John, B General Building Contractor in Sonora, CA
Diehl John operating as a sole owner holds an active California contractor license (CSLB #556206), valid through Feb 28, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries 2 CSLB classifications: B General Building Contractor and C-10 Electrical Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Great American Alliance Insurance Company. The business is based in Sonora, in Tuolumne County, California.
- License Number
- 556206
- Issued
- Feb 3, 1989
- Status
- CLEAR
- Expires
- Feb 28, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100959776
- Effective
- May 5, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Great American Alliance Insurance Company
- Policy Number
- WCF250082
- Effective
- Sep 30, 2024
- Expires
- Sep 30, 2026
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Diehl John licensed in California?
Yes. Diehl John holds California Contractors State License Board license number 556206, which is active and in good standing. The license was first issued on February 3, 1989. It is valid through February 28, 2027.
What does Diehl John specialize in?
Diehl John is licensed for 2 CSLB classifications: B General Building Contractor and C-10 Electrical Contractor.
Where is Diehl John headquartered?
Diehl John is headquartered at 19696 Whitto Mine Road, Sonora, CA 95370, in Tuolumne County, California.
Does Diehl John have an active surety bond on file with CSLB?
Yes. Diehl John has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Diehl John carry workers' compensation coverage?
Yes. Diehl John carries active workers' compensation coverage through Great American Alliance Insurance Company.
How do I verify Diehl John's contractor license?
You can verify Diehl John's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=556206.
- License issuedFeb 3, 1989
- WC coverage startsSep 30, 2024
- Bond activeMay 5, 2025
- WC expiresSep 30, 2026
- License expiresFeb 28, 2027
- Lafayette Construction#375409Sonora·B General Building Contractor
- Renard G T#368773Tuolumne·B General Building Contractor
- C L C Construction#509064Groveland·B General Building Contractor
- Al's Plumbing & Electric#555102Pinecrest·C-10 Electrical Contractor
- G Mitchell & Sons Builders#549331Twain Harte·B General Building Contractor
- Lennen Associates#546348Groveland·B General Building Contractor
- Gilliam Michael Lee#542571Twain Harte·B General Building Contractor
- Freiwald Robert#540810Twain Harte·B General Building Contractor
Working a California job with Diehl John, 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 Diehl John? Claim or correct this profile