Kingstone Engineering, A General Engineering Contractor in Ripon, CA
Kingstone Engineering operating as a sole owner holds an active California contractor license (CSLB #1153019), valid through Apr 30, 2028. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Ripon, in San Joaquin County, California.
- License Number
- 1153019
- Issued
- Apr 6, 2026
- Status
- CLEAR
- Expires
- Apr 30, 2028
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100972995
- Effective
- Jul 16, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 2, 2026
- Expires
- —
Recently licensed: the CSLB license is active and in good standing, issued within the last 2 years.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Kingstone Engineering licensed in California?
Yes. Kingstone Engineering holds California Contractors State License Board license number 1153019, which is active and in good standing. The license was first issued on April 6, 2026. It is valid through April 30, 2028.
What does Kingstone Engineering specialize in?
Kingstone Engineering is licensed for one CSLB classification: A General Engineering Contractor.
Where is Kingstone Engineering headquartered?
Kingstone Engineering is headquartered at 20865 E River Road, Ripon, CA 95366, in San Joaquin County, California.
Does Kingstone Engineering have an active surety bond on file with CSLB?
Yes. Kingstone Engineering has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Kingstone Engineering carry workers' compensation coverage?
Kingstone Engineering reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Kingstone Engineering's contractor license?
You can verify Kingstone Engineering's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1153019.
- Bond activeJul 16, 2025
- WC coverage startsMar 2, 2026
- License issuedApr 6, 2026
- License expiresApr 30, 2028
- Collins Electrical Company INC#115427Stockton·A General Engineering Contractor
- Stone Gary L#260426Stockton·A General Engineering Contractor
- Brayton C T & Sons INC#257952Escalon·A General Engineering Contractor
- Ford Construction Company INC#391570Lodi·A General Engineering Contractor
- Mayo Tom Construction INC#388077Stockton·A General Engineering Contractor
- Knife River Construction#334653Stockton·A General Engineering Contractor
- Brc#341375Stockton·A General Engineering Contractor
- Stone Homes#350976Stockton·A General Engineering Contractor
Working a California job with Kingstone Engineering, 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 Kingstone Engineering? Claim or correct this profile