Most residential garages (attached) are 9 feet + due to the even top plates
and the drop from the living area floor joists and 8' ceilings. Most garage
door tracks are set up for this height. You see 8 feet in garage-unders.
They are very cramped and the garage doors require special low-headroom
tracks.
Go 9'-4" or better.

wrote in message
oups.com...
I am about to start building a 24 X 28 stand alone garage/shop. I
decided against doing a course or 2 of concrete block and then 8ft
walls and I will just frame it from the pad up. So that leaves me with
the decision of 8' or 10' ceiling height. I know more space is
generally better, but if the space is for casual car repair and wood
working, is 10' really needed? anybody out there do 8' and really
regret it? It's not so much the cost that I'm worried about as I am
doing this myself and 10' will mean more work and I want to be sure its
worth it. thanks for you help.