I’ll need to do a fair bit of reading I think
My initial thoughts were to make an appointment with planning to discuss pre application stuff to formalise our thoughts and make sure they broadly fit with what’s acceptable, which from what I’ve read they should.
Then get the proper planning drawings + design and specs + and calcs for the Steel(s). Then take the rest on myself doing what I can myself and then organising trades and building inspectors.
We’ll see though it’s all a bit fluid and just thoughts at the moment, There’ll be a few stages we think and everything will take us a few years we think. Starting with the garden and internal stuff now and moving on to a new garage then the extension.