Facility Reservation Process

How to reserve the Diamond Bar Center. First, it is important to have to have the following information available prior to making an appointment for a tour. This will allow staff to confirm room availability and allow ample time to set your appointment date and time in advance.

  • Number of guests
  • Room desired, this may be determined by number of guests
  • Event date and alternative dates
  • Rental time, including setup and cleanup
    • Times available for reservations*
      • Sunday through Thursday: 7:30 a.m. - 11 p.m.
      • Friday and Saturday: 7:30 a.m. - Midnight

*Requests for alternate hours require special written approval and may be subject to additional fees. Weekend rates begin at 4 p.m. on Friday to 11 p.m. on Sunday.

Facility reservations are accepted the 1st of the month, for the entire month. If the 1st is a holiday, then the next business day. Your reservation will be confirmed once you have submitted an application, paid a deposit and signed a contract.

For facility fee quotes, contact Diamond Bar Center staff at (909) 839-7065 or email 

Make an Appointment

When you are ready to tour the Diamond Bar Center, make an appointment to meet with an event coordinator to review paperwork, fee schedule and reserve your date. Make An Appointment

 How far in advance can I reserve a room?

Residents and Diamond Bar based non-profits can reserve rooms up to 24 months in advance and non-residents and businesses can reserve rooms up to 20 months in advance.