Planning permission for eco-build

Hello

May as well give you the full yarn..

I've bought 1/2 acre at Ringwood Farm behind Ringwood hall. I raised the money by re-mortgaging my house, I've let my house out (it's too expensive for me now) and I'm moving into a flat in Chesterfield. I'd like to do an eco-build on the land. This will mean selling my house, it'll be skin-of-teeth financially and probably pretty uncomfortable so I don't want to commit until I've got 100% planning permission.