As it is, it's not real clear from the information provided just what may be appropriate or who should possibly be involved.  Is this a multi-million dollar new PAC or what do we have to do to convert an existing space for a small volunteer based troupe?  Are you looking to purchase property and build, build on property you own, move into an existing performance space, adapt an existing building, share a space used for other events or is that not yet known?  What size is the group, what you do (or want to do) and what type of performances and spaces are envisioned?

 

The first step is in any effort like this is usually to define where you want to go in general and functional terms, defining your perceived needs and vision.  In the design and construction industry this is called a Program or Needs Analysis and that type of information is going to be needed by any designers, Architects or consultants anyways so that they can understand your needs and vision, so it's just about always a good place to start.  This  document can address general issues such as needing a performance space with at least X seats or that you need to support dance performances.  It can address functional aspects such as requiring a box office that is accessible when the rest of the space is closed or neeeding a place for twenty Sugar Plum Fairies to gather before going on stage.  And it can address specific issues such as knowing you need a minimum Y' x Z' prop storage room or that you want a minimum X channel dimming system.  It can address technical aspects and subjective/aesthetic factors.  It can include critical'must haves', desired items and 'wish list' items (although it can be very beneficial to try to delineate and prioritize these).  The goal is simply to document as much as possible your vision for the space and what to you defines an ideal or at least successful result.