Event Space Facility Rental Information The new Balboa Island Museum is the ideal location for a presentation, lecture, staff training or a slideshow with a built-in projector and screen. Up to 50 seated or 60 Cocktail $1,500 Rental fees are based on a 5-hour time frame. This fee include: 1 hour for set up, 3 hours for your event and 1 hour for break down. Additional event time will be billed at $500 per hour. Membership to the Balboa Island Museum is required. Refundable damage deposit of $1000 to be held with a valid credit card. Facility fees include (1) security guard and custodial fees.