I'm investigating my foundation requirements for a 12m x 6m Log Cabin which I plan to self-build on a 6 degree slope in my rear garden which will be more than 5m from the house so no planning permission is required. If I don't level the ground then the bottom end will be about 1.25m above the ground and take the cabin height over 4m which will require planning permission. I'm hoping to use plinth foundations for this project to keep costs down but have no experience of this. Will digging in at one end and raising the ground at the other be an acceptable course of action for plinth foundations. There will also be two trees (one about 8m and the other about 6m) within 2-3m of the cabin, is this acceptable. I'm kitting the cabin out so it could be used all year round by myself but will I need to involve a building inspector if it's just me using the cabin which will be powered/watered off the main house.
An advice will be greatly appreciated.