Alpha Construction Services INC, B General Building Contractor in Diamond Bar, CA
Alpha Construction Services INC operating as a corporation holds California contractor license #1015331, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2016, the license has been on the CSLB roster for 10 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 Diamond Bar, in Los Angeles County, California.
- License Number
- 1015331
- Issued
- Jun 20, 2016
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100966663
- Effective
- Jun 11, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- May 16, 2024
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Alpha Construction Services INC licensed in California?
Alpha Construction Services INC previously held California Contractors State License Board license number 1015331, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 20, 2016.
What does Alpha Construction Services INC specialize in?
Alpha Construction Services INC is licensed for one CSLB classification: B General Building Contractor.
Where is Alpha Construction Services INC headquartered?
Alpha Construction Services INC is headquartered at 324 S Diamond Bar Blvd #151, Diamond Bar, CA 91765, in Los Angeles County, California.
Does Alpha Construction Services INC have an active surety bond on file with CSLB?
Yes. Alpha Construction Services INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Alpha Construction Services INC carry workers' compensation coverage?
Alpha Construction Services INC reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Alpha Construction Services INC's contractor license?
You can verify Alpha Construction Services INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1015331.
- License issuedJun 20, 2016
- WC coverage startsMay 16, 2024
- Bond activeJun 11, 2025
- License expiredJun 30, 2026
- Niesner Frank#227508Calabasas·B General Building Contractor
- Padelford A J & Son INC#222840Artesia·B General Building Contractor
- Nadar INC#214554Pasadena·A General Engineering Contractor
- Seidner Construction CO#214890Glendora·B General Building Contractor
- Rand Engineering Company#215000Los Angeles·B General Building Contractor
- Eastside Construction CO INC#212643Downey·B General Building Contractor
- Ohr Energy#212038El Segundo·A General Engineering Contractor
- Eide Industries INC#211771Cerritos·B General Building Contractor
Working a California job with Alpha Construction Services 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 Alpha Construction Services INC? Claim or correct this profile