There are good circumstances under which to do procurement as design/
build, but it sounds like that'll be hard to do in this case if someone needs to perform a top to bottom rigging inspection before they can put a quotation together. It's probably best to find a consultant that does both or two consultants (rigging +
acoustics) that'll partner on it -- under separate contract from the actual contractors performing the work. That way you can get a priorities list and a good/better/best recommendations and cost magnitudes before shopping it to contractors. Then, once you start shopping it to contractors, they will keep their pencils sharpened if they know they are in competition with other bidders.
If you enter into it as a design/
build relationship where everything is under one contract, it can drive price up if everyone doesn't have a
clear understanding of the scope from the outset. Each subcontractor is putting a buffer in their price for unknowns that can end up adding more to the contract cost. It's also more difficult to begin inspections when the consulting work is under the installation contract -- but the scope of installation isn't yet clearly defined.
At best, I think you'll be able to find rigging shops that are willing to inspect, report, and remedy, but I doubt you'll find any independent consultants who are willing to take on the burden of the installation scope under the same contract. That's a lot of contract management burden to take on and requires more
leg work before a contract can be signed.
The other problem is that when it comes to
acoustics, the recommendations may come in the form of
curtains, wall panels, spray treatments, architectural finishes or a number of other materials -- exactly which may not be apparent from the outset. Most of those trades are so specialized that you would need a different subcontractor for each of them and there may be further implications for fire protection, electrical, or structural trades as well. I've also seen cases where someone thought they had an
acoustics issue that ended up being a sound
system tuning problem or had an
acoustics problem they thought was a sound
system issue.
Without knowing more about your particular venues and the magnitude of issues you're trying to
address, my instinct is to recommend you procure consulting services first, then use the outcome of that to procure installation services. That leaves more options available to you on what to
address 1st/2nd/3rd and then you don't have a rigging contractor treating
acoustics issues with
velour when you fundamentally have a different problem going on.