My shop is 31x34, with 10' ceiling. Walls are insulated and covered with OSB painted white, ceiling is sheetrock. 9x9 garage door and 3' personnel door. It is built over a crawl space to make it easier standing, and provide access for dust collection and electrical power under the floor. 200A electrical panel, HVAC, utility deep sink. Across a small hallway is my 8x10 office, 1/2 bath, and my wife's sewing/craft room. There is 1 column in the shop that supports a corner of 500 sf of storage (shared with LOML) above the shop.