Knuppe M J Development Company, B General Building Contractor in Castro Valley, CA
Knuppe M J Development Company operating as a sole owner holds an active California contractor license (CSLB #742847), valid through Nov 30, 2027. First issued in 1997, the license has been on the CSLB roster for 29 years. It carries a single CSLB classification: B — General Building 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 Castro Valley, in Alameda County, California.
- License Number
- 742847
- Issued
- Nov 19, 1997
- Status
- CLEAR
- Expires
- Nov 30, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC6069300
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Dec 15, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Knuppe M J Development Company licensed in California?
Yes. Knuppe M J Development Company holds California Contractors State License Board license number 742847, which is active and in good standing. The license was first issued on November 19, 1997. It is valid through November 30, 2027.
What does Knuppe M J Development Company specialize in?
Knuppe M J Development Company is licensed for one CSLB classification: B General Building Contractor.
Where is Knuppe M J Development Company headquartered?
Knuppe M J Development Company is headquartered at 4545 Crow Canyon Place, Castro Valley, CA 94552, in Alameda County, California.
Does Knuppe M J Development Company have an active surety bond on file with CSLB?
Yes. Knuppe M J Development Company has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Knuppe M J Development Company carry workers' compensation coverage?
Knuppe M J Development Company reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Knuppe M J Development Company's contractor license?
You can verify Knuppe M J Development Company's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=742847.
- License issuedNov 19, 1997
- Bond activeJan 1, 2023
- WC coverage startsDec 15, 2025
- License expiresNov 30, 2027
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