Usually I hear people saying "I should have made it bigger" "it would have been so easy to add 2' of width or depth when I built it, why didn't I?". I built a 14' x 18" extension on the back of my two stall garage, did not have room to go much wider, but I could have gone deeper and really wish I had. I can go three deep with the Triumph, 924, and the wife's Fit, but they are literally bumper to bumper and I can only get around on one end.
It may seem big at first, but as you accumulate cars and stuff the space shrinks.
Yup, should have. I am trying to get the new garage finished and have car projects already going on inside. A lift was only fleetingly considered and the 2 foot foundation wall turned out to be two feet on the outside grade but only one foot inside. (1st mistake: should have made it 4ft.) That give a ceiling height of just under 9ft.
After 55 years or so of working on cars without a lift, I never thought I'd need one nor could afford one. However, at my age, a lift would be Nirvana. My advice: build it big enough for a lift, even if you don't plan on one.
I'm giving some thought to putting one outside, next to the building. Fair weather thing, I know, but I'm away during our New England winter.
The other option is to have one inside, crouching or sitting underneath. Beats the creeper? Also think I could stack, albeit with a bit of grease, two LBCs in the space for storage.
Tom