I have a two bay ac and heated shop in my backyard and love it. Im able to write off a chunk of my rent and utilities. My place is nice looking, fences and gated and has a separate drive back to the shop.
I have absolutely no trouble finding clients, although it took a couple years to get to that point and really struggled at first.
Im detailing full time and work on some awesome cars. I have some slow weeks here and there and january and february can be brutally slow.
I love having a home based business. I can prep the car in the morning and then go take a lunch and rest at the house.
I can also keep a close eye on the cars when i keep them overnight which i actually do quite often.
My place isnt super fancy, but is nice and has somewhat of the upscale image i was going for. I mostly target higher end clientele so this was very important.
The look of your place can hinder you or be an advantage. It doesnt have to be super nice but needs to at least be clean, have nice landscaping etc. People will judge you...its a fact.
I looked around for a while but find a place, zoned commercial just off a busy road and close to upscale neighborhoods. Even if you are paying 1k to 1500 for rent you will be saving money compared to mobile detailing and are saving a ton of money compared to somebody with a shop and separate house.
Home based is the way to go imo. Im continuously working on nicer and nicer cars and making more money than a mobile detailers. No offense to you mobile guys. You are awesome!