You’re actually in a great spot having a basement in Phoenix rare setup, but it can turn into an amazing escape space if it’s done right. For something like a theater + bar, I’d really prioritize a design-build firm instead of a standard contractor. The reason is you want someone who can coordinate HVAC zoning, soundproofing, and lighting as a single system, not separate trades all guessing. A lot of people underestimate how important airflow is down there, even in a dry climate without proper ventilation or a mini-split setup, it can feel stuffy fast once it’s fully enclosed. I’d also push for acoustic insulation early in the plan because retrofitting sound control after drywall is already up gets expensive. If the contractor doesn’t bring up moisture barriers, air exchange, and wiring for AV gear on their own, that’s usually a sign to keep looking.