Welton Building & Design
Welton Building & Design operating as a corporation is licensed in California under CSLB number 1148797. 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 Alamo, in Contra Costa County, California.
- License Number
- 1148797
- Issued
- Jan 8, 2026
- Status
- CLEAR
- Expires
- Jan 31, 2028
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- 101023252
- Effective
- Dec 31, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Dec 31, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
- License issued less than 2 years ago
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Welton Building & Design licensed in California?
Yes. Welton Building & Design holds California Contractors State License Board license number 1148797. The license was first issued on January 8, 2026. It is valid through January 31, 2028.
What does Welton Building & Design specialize in?
Welton Building & Design is licensed for one CSLB classification: B General Building Contractor.
Where is Welton Building & Design headquartered?
Welton Building & Design is headquartered at 170 Erselia Trl, Alamo, CA 94507, in Contra Costa County, California.
Does Welton Building & Design have an active surety bond on file with CSLB?
Yes. Welton Building & Design has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Welton Building & Design carry workers' compensation coverage?
Welton Building & Design reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Welton Building & Design's contractor license?
You can verify Welton Building & Design's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1148797.
- Bond activeDec 31, 2025
- WC coverage startsDec 31, 2025
- License issuedJan 8, 2026
- License expiresJan 31, 2028
- Overaa C & CO#106793Richmond·A General Engineering Contractor
- Swinerton Builders#92Concord·A General Engineering Contractor
- Doyle Michael J#240251Danville·B General Building Contractor
- Parshall Construction#242928Danville·B General Building Contractor
- American Refrigerant Services INC#246018Concord·B General Building Contractor
- Lescure Company INC#248204Concord·A General Engineering Contractor
- S J N Construction#250677Discovery Bay·B General Building Contractor
- Busby James J#255487Concord·A General Engineering Contractor