We've just done similar, but SE, 1930's build, large, detached 4 bed.
OP- so the link isn't the actual house? Has it been lived in for the past 2yrs? There is a little know scheme to get properties back to a livable state and VAT savings if that is the case.
Ours had been left derelict for 7yrs. Its needed everything from a new roof, new windows/doors, plumbing, re-wiring, sewer pipes, floors, bathrooms, kitchen. We also removed 2 walls, added 2 sets of bifolds and needed 3 structural steels. So far, we have paving around the house, a path, new fences and a lawn.
We lived in a static caravan in the garden whilst this was all done. It was hard, but absolutely worth it. DH and I did bits we could, but we aren't in the 'trade' and it was better that we worked in our jobs and paid tradesmen for the majority of the work.
The cost of materials jumped week on week! I'd estimate we've spent £250,000. Its our forever home, absolutely love the street and area has been built so that if DH and I needed to, we could live exclusively on the ground floor. Don't underestimate the costs, time, mess etc though.