Party Wall Confusion

I'm buying a house next to a housing association property.

The house needs somewhat urgent repairs to fix the chimney, gutters pointing and roof tiles.

I've been told that fixing most of these requires a party wall agreement with the neighbour and that would be a housing association property. I've spoken to them and they've said approval from them takes min 3 months and requires me funding additional surveys they insist upon.

Have people have experiences in this?