acorner

Thanks for all the useful replies. Dave Jones, front door is here: BigBub, no restrictions on permitted development according to conveyancing documents.

I guess there is a lot of subjectivity to it! Our neighbours (outlined in blue) were the original land owners. Their garage is on the left-hand side and faces the road. Their front door faces the road. If we had a garage, which we don’t, it would likely be in front of the the green box, facing the road (where #2 line is below). Our front door faces the left-hand boundary. I’d consider where the green box is located in the original post as the ’side garden’ (maybe optimistic) and the driveway and flower areas aside the driveway as the front garden. The area where the green box is not visible from the road, and not visible to the neighbours due shrubs and fencing, except it would poke over the neighbours to the rear's fence. They have an outbuilding which you can partially see on the drawings. Worth noting there are also 3 old oak trees (not protected) along the left boundary, meaning the outbuilding would be 'no dig' groundworks. That's also an extra layer of complexity for planning that I'm hoping to avoid with permitted development. Joe90's suggestion is great, thank you, along with consulting other knowledgable people. Easy solution is to build in the back garden (high visibility for us and loss of prolonged sunnier areas, and some for the neighbours in front), or rent an office elsewhere.

Hi all, I’m in early research ('thinking') mode trying to figure out whether I can build a garden office (2.5x2.5, up to 4x3, <2.5m high) on the left-hand boundary (green box) under permitted development. The road is at the top approx 60 metres north. Where is the principal elevation?