Custom Modular Structures, B General Building Contractor in Discovery Bay, CA
Custom Modular Structures operating as a sole owner holds an active California contractor license (CSLB #560604), valid through Mar 31, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Hudson Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Discovery Bay, in Contra Costa County, California.
- License Number
- 560604
- Issued
- Mar 14, 1989
- Status
- CLEAR
- Expires
- Mar 31, 2027
- Entity
- Sole Owner
- Surety
- Hudson Insurance Company
- Bond Number
- 30142421
- Effective
- May 7, 2024
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 13, 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 Custom Modular Structures licensed in California?
Yes. Custom Modular Structures holds California Contractors State License Board license number 560604, which is active and in good standing. The license was first issued on March 14, 1989. It is valid through March 31, 2027.
What does Custom Modular Structures specialize in?
Custom Modular Structures is licensed for one CSLB classification: B General Building Contractor.
Where is Custom Modular Structures headquartered?
Custom Modular Structures is headquartered at 1525 Willow Lake Road, Discovery Bay, CA 94505, in Contra Costa County, California.
Does Custom Modular Structures have an active surety bond on file with CSLB?
Yes. Custom Modular Structures has an active California contractor surety bond filed with Hudson Insurance Company.
Does Custom Modular Structures carry workers' compensation coverage?
Custom Modular Structures reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Custom Modular Structures's contractor license?
You can verify Custom Modular Structures's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=560604.
- License issuedMar 14, 1989
- Bond activeMay 7, 2024
- WC coverage startsMar 13, 2025
- License expiresMar 31, 2027
- Swinerton Builders#92Concord·A General Engineering Contractor
- Overaa C & CO#106793Richmond·A General Engineering Contractor
- Lyons W E Construction CO#180607Walnut Creek·A General Engineering Contractor
- Scott Edward W Electric CO INC#190426Richmond·A General Engineering Contractor
- Contra Costa Electric INC#139885Martinez·A General Engineering Contractor
- Doyle Michael J#240251Danville·B General Building Contractor
- Parshall Construction#242928Danville·B General Building Contractor
- Lescure Company INC#248204Concord·A General Engineering Contractor
Working a California job with Custom Modular Structures, 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 Custom Modular Structures? Claim or correct this profile