General

The maximum footprint is 30m2, anything over that will require planning permission and structural calculations.
Garden buildings do not require planning permission as long as the building is 2.5m maximum and within 2 meters of the boundary, or 3m maximum if over 2 meters away from the boundary. We always recommend checking with your local council as some areas may have special rules.
No the construction fee is just for work carried out on site, delivery of the materials is separate and will vary depending on where you are located within the country.
Yes all kits come with full assembly instructions from floor to roof.