I'm currently buying a semi-detached house at the top of my budget.
It is the standard 1930's semi, so there are 2 double bedrooms and one single, plus a family bathroom upstairs. There is also a garage behind the house, plus a 70ft garden.
There's about 2.5-3m (measured with my eyes!) of space at the side of the house, in which I'd want to build both a double storey plus rear extension to create an extra bedroom and shower room upstairs, then granny annex, utility and kitchen/diner downstairs.
To maximise the house footprint, I'd need to go up to the boundary, but feel uncomfortable about losing the side access to the garden to do so. Am I being irrational, or is side access really important?