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Business License
All individuals and businesses doing work within city limits, whether or not they have a physical structure in the city, are required to have a business license. This includes contractors, internet and home-based businesses. Business license holders must display their license in public view at all times.
Business License Application
Business license applications may be completed online, and will be processed electronically.
Alternatively, licenses may be applied for in person at City Hall during regular business hours. Please complete a business license and zoning clearance application for new businesses located within city limits. For businesses located outside of the city, please complete the business license application only.
Renewals
Annual license renewals, including payment, may be completed online.
Dental Offices
Dental offices must submit the One-Time Compliance Report for Dental Discharges Form with the renewal application, if not submitted already.
National Pollutant Discharge Elimination System (NPDES)
Please verify if your business is required to enroll with the NPDES permit program. Businesses that fall within this category include, but are not limited to:
- Manufacturing, production, or transportation
- Wholesale trade of used auto parts, scrap and waste, or petroleum
- Electric services, sewerage services, or refuse systems
To review the comprehensive list of businesses, please refer to the Supplemental NPDES/SB 205 Form. Businesses that fall under SB 205, shall submit this form with the renewal application.
Payment
Payments can be made by check or online. Please note that a 2.5% processing fee will be applied to all credit/debit card payments. Once an application is submitted, a staff member will follow up with you on the preferred method of payment and provide instructions.
Exemptions
Non-profits and certain businesses are exempt from paying fees under the Constitution of the United States or under the Constitution or laws of the State of California but must still register with the City.
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Planning Division
Physical Address
21810 Copley Drive
Diamond Bar, CA 91765
Phone: 909-839-7030
- What are business license requirements?
- Do I need a business license, and how do I obtain one?
- What are the fees?
- How long does it take to process?
- Do I need additional permits or approvals?
- Where do I file a Fictitious Business Statement?
- Do I need a new license if my business changes its location, ownership, or name?
- When do I need to renew my license?
- Who do I call for business closure notification?
- What do I need to open a massage establishment in the city?
Resources
Agencies you may want to contact regarding your business:
- Better Business Bureau
Phone: 909-825-7280 - Cal-Gold - Business Permits Made Simple
- Department of Alcoholic Beverage Control
Phone: 626-256-3241 - Industrial Waste Permits
Phone: 626-574-0962 - Los Angeles County Fire Department
Phone: 909-620-2216- Fire sprinkler systems - 20+ heads
Phone: 323-890-4125
- Fire sprinkler systems - 20+ heads
- Los Angeles County Registrar/Recorder
Phone: 562-462-2177 - Regional Chamber of Commerce - San Gabriel Valley
Phone: 909-869-0701 - State Board of Equalization
Phone: 626-480-7200 - State Department of Industrial Relations
- Division of Labor Standards Enforcement
Phone: 909-595-2264 - DLSE Letter RE: New Business License
- Division of Labor Standards Enforcement
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