The safe things to automate fully: the first acknowledgment on any new inquiry (call, form, or message), missed-call text-back, quote follow-up reminders on a schedule, and review requests after job completion. None of these require judgment - they're the same message every time, and speed matters more than personalization.
The things that still need a human: the actual quote itself, any pricing discussion, and real questions about the project. Automation should buy you time and keep the lead warm, not pretend to be you in a conversation that needs real expertise.
The tools that make this practical for a solo or small remodeling business are platforms like GoHighLevel that bundle SMS/email automation with a CRM and calendar in one place, so you're not stitching together five separate tools to get a simple sequence running.