I usually have 2-4 hours minimum on wheels, engine bay, pre-wash foam, decontamination and 2 bucket wash preparing for the polishing part.
I can have 20-30 hours on compounding to remove imperfections (swirl marks etc.) and and polishing to enhance the gloss and clarity.
It's a lot more work than most folks think when they say "I want to get my car detailed".
Lighting is the key. There is a big difference between lighting up a shop (general bright lighting) and lighting designed to find and highlight swirl marks. Even then the noon sun makes a great light.
I can seen things with my lights that can make a career out of paint correction. There's a big difference between shop lighting and swirls finder lighting. A good place to start is a Scangrip.
I’m currently looking to build an additional garage for home based work mostly detail related and minor personal car repairs. I’ll be sure to ask opinions on lighting when it hits that stage as I always am curious what you guys utilize.
Like you said even the lighting in the body shop isn’t great for detail work. Now the paint booth, that’s a different story.