Single road 27m away, old house 96m2, 1980s extension 49m2, open porch 2m2. I can gain extra height as ground floor new extension may be two steps down out of old part of house.
I shall make this clear with a diagram.
I wish to build a side extension within PD. How big can I build a side two storey side extension onto the old single storey house?
Originally people lived in loft, there still is a gable first floor window.
House is pitched roof and extension would follow...