My last house I drew the basic outline of my old roof & the new roof on yellow legal pad. I brought it to the Inspector & asked what he needed for plans.
He photocopied the sketch, good to go!!

:laughing:
Likewise for some decking work on my own home. All the head inspector did was sign his name to the pretty picture I brought him. But not so for anything involving children.
Everything in the house had to be tested for material safety and reports filed.
Because of the rise in teacher-on-student molestations and abuse, the entire structure had to be opened up, visually, so there was no place not always visible to a second teacher or surpervisor.
Bathrooms had their own set of requirements.
The kitchen area had to meet commercial standards.
Even the playground play area underwent a stringent examination. Equipment had to meet or exceed certain industry standards... with written and approved documentation. We even had to submit documentation on the type of material used on the swing set yard.
Storage areas... even toy chests... had to be "fail-safe" for accidental lock-ins.
The little kiddie's chairs and tables had to pass muster with the same sort of manufacturer's documantation.
Heights and types of locking systems were directed.
Property perimeter security was a big issue.
And none of this is even touching on the air quality testing... or the fire supression system. That was all a nightmare.
Lighting had to be engineered with type and lumins specified and approved.
In a nutshell, I can tell you that I might have foolishly way underbid something like that house transformation.