Diamond Bar, Los Angeles
Building, Planning & Zoning Departments

Need Help?

Call (818) 459-3839 or email us at [email protected]

Building & Safety Department

Website
Phone

(909) 839-7020

Email
Address

21810 Copley Dr, Diamond Bar, CA 91765

Historical/Special Department

Inspections Department

Phone

(909) 839-7027

Address

21810 Copley Dr, Diamond Bar, CA 91765

Planning Department

Website
Phone

(909) 839-7030

Email
Address

21810 Copley Dr, Diamond Bar, CA 91765

Zoning Department

Website
Address

21810 Copley Dr, Diamond Bar, CA 91765

Zoning Documents & Forms

PDF – 597 KB ZoningMap.pdf