Has anyone asked their solicitor questions after completing?
I did. They were helpful.
-thinking about getting retrospective permission for my back windows getting changed by previous owners.
That doesn't often need permission. I wouldn't bother, it's unlikely anyone will ever challenge it.
-not sure if I need PP to retrofit double glazing on front side original sashes (conservation area, not listed)
I think you do. Call the council and ask. There is a reasonable chance you aren't allowed to do that at all, you will not get planning permission, in a conservation area.
Cheers sounds good. Had a couple of builders round who know the area. One said you can't retrofit but you can change them for replica double glazing, one suggested the retro fit.
I did. They were helpful.
That doesn't often need permission. I wouldn't bother, it's unlikely anyone will ever challenge it.
I think you do. Call the council and ask. There is a reasonable chance you aren't allowed to do that at all, you will not get planning permission, in a conservation area.