Tsai Masterbuilders, B General Building Contractor in Walnut, CA
Tsai Masterbuilders operating as a sole owner holds an active California contractor license (CSLB #457096), valid through Feb 29, 2028. First issued in 1984, the license has been on the CSLB roster for 42 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Jet Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Walnut, in Los Angeles County, California.
- License Number
- 457096
- Issued
- May 18, 1984
- Status
- CLEAR
- Expires
- Feb 29, 2028
- Entity
- Sole Owner
- Surety
- Jet Insurance Company
- Bond Number
- JT026540
- Effective
- Jan 11, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jan 7, 2026
- 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 Tsai Masterbuilders licensed in California?
Yes. Tsai Masterbuilders holds California Contractors State License Board license number 457096, which is active and in good standing. The license was first issued on May 18, 1984. It is valid through February 29, 2028.
What does Tsai Masterbuilders specialize in?
Tsai Masterbuilders is licensed for one CSLB classification: B General Building Contractor.
Where is Tsai Masterbuilders headquartered?
Tsai Masterbuilders is headquartered at 819 N Streamview Street, Walnut, CA 91789, in Los Angeles County, California.
Does Tsai Masterbuilders have an active surety bond on file with CSLB?
Yes. Tsai Masterbuilders has an active California contractor surety bond filed with Jet Insurance Company.
Does Tsai Masterbuilders carry workers' compensation coverage?
Tsai Masterbuilders reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Tsai Masterbuilders's contractor license?
You can verify Tsai Masterbuilders's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=457096.
- License issuedMay 18, 1984
- WC coverage startsJan 7, 2026
- Bond activeJan 11, 2026
- License expiresFeb 29, 2028
- Circle Industrial Manufacturing CORP#196066Compton·B General Building Contractor
- Beach City Contractors Group INC#192592Long Beach·A General Engineering Contractor
- Carpentieri Services INC#190828Northridge·B General Building Contractor
- Png Builders#188629Irwindale·B General Building Contractor
- Tomco Construction#188540Torrance·A General Engineering Contractor
- Robert C Worth INC#187915North Hills·B General Building Contractor
- Hauser Ernest Ralph JR#184640Burbank·B General Building Contractor
- Mcintyre Company the#184513Covina·B General Building Contractor
Working a California job with Tsai Masterbuilders, 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 Tsai Masterbuilders? Claim or correct this profile