We had a 2-car, 24' square garage build by Carefree Small Buildings in Connecticut. Fabulous outfit. After the foundation was installed and cured, the entire garage went up in 3 days. I wired it, insulated it, dry-walled it and had the ceiling rough plastered. Don't have heat or A/C (would love both) but it's OK for me. When we left South Carolina I had two shops worth of "stuff" which got combined here so it's like "Tools-R-Us" but could still use a taller lift. I store my quick-Jack under the speedster without issue. Saves a lot of setup time.
So it's not quite the "Garage-Mahal", but it's comfy and I can do an awful lot out there.
Upgrades for this winter are 4 more LED light strips in the back near the doors, surge protect AFI/GFI the entire garage (not just the outlets) and think a little more about getting affordable heat out there. Still........Itza comfy kinda place for me.