It is post frame. I had a buddy build it for me. He put it up for $1500 which was a really good deal. The materials for the whole shell was about $12,000 and I have about $2,000 in the concrete. I put another $15k into rock, wiring, heating, water, and insulation.
It is 24 x 48 x 14h w/ 12' door. I wish it was 48X60 and 16h with a 14' door so I can get my bucket truck inside when it gets cold.
Not even close to big enough 30x70 , all the trailers are outside and a couple more trucks. Only had all of this in there to deter the theives while we're not busy.