This is for a shed with a tilted flat roof and 1 door on one 8 foot wall. The floor is made using 2x4 treated lumber suitable for installation right on the ground. Above the lumber is 3/4 inch thick plywood. The walls are in 4 foot wide sections that bolt together without tools. The roof is in 1 piece 4 feet wide by 8 feet long.  The height with the roof down is 5 feet so it cannot be seen behind a 5 foot wall or fence. 

The roof has foam under for insulation.  The walls and roof are pure plastic for perfect moisture resistance in white. The door has a switch that closes when the door is opened. There is a solar panel and a battery and an electronic circuit that drives 4 electric push rods to lift the roof  up to 7 feet high for head room.  There is a bypass switch to keep the roof open when the door is closed in case you want to work in the shed with the door closed.