Clarify your goal in audience building. Are you trying to engage a specific audience, or expand overall attendance? Are you audience building to bring in additional revenue, or to support a particular type of art that might not help your bottom line? Clarity around these questions will help you design more effective audience-building strategies.
Consider the financial implications of audience-building efforts. Some audience-building initiatives will require financial subsidy, rather than generating earned income to cover costs. Beyond ticket sales, will grants, donations, or other subsidies be required to support your initiative?