Two of us set this greenhouse up in about six hours time with a few breaks (it was muggy). Used a 4x4 foundation secured with anchor bolts to cement blocks in the corners. Assembly was not to bad. Pre-read the full instructions before assembly to understand each instructional step. Fully tightened all nuts at end and used level to plum up sides and to make sure door was clean fit. Great design of extruded aluminum and all attaching parts. Only suggestion would be to make the bottom flange wider to allow clearance when mounting to 4x4s.