Each of these is a distinct problem with a distinct answer.
The ones that matter most are not about the panels. A solar installation is a straightforward thing; a lease over part of your roof, a covenant in your title, or a missing building regulations certificate is a property problem — and property problems surface at the worst possible moment, usually six weeks into a sale.
Listed buildings and homes in conservation areas are covered in the planning cluster, because the constraint there is statutory rather than a matter of property type.
The transactions, ownership and roof-type pages are published. Solar for specific building ages and construction types will follow.
If there is something specific you were looking for, tell us — it moves up the queue.
Most people start here
Buying a house with solar panels already fitted
One question decides everything else: are the panels owned, or leased? Get it wrong and you find out when your mortgage offer is withdrawn.
Solar for flats and apartments
The obstacle is almost never planning. It is ownership — and the lease decides it, not the technology.
Buying and selling
Who owns the roof
Building and roof types
Sorry to hear that. What was the problem?