Do Solar Panels Need Planning Permission?
Permitted development, and the situations in London where it does not apply.
The general position
Solar on a house often falls under permitted development, subject to conditions about how far the panels project, where they sit relative to the roof plane, and the property's designation.

Where it does not apply
Listed buildings, conservation areas, and some flats and maisonettes. Local designations vary, and Scotland, Wales and Northern Ireland have their own planning regimes.
London
Butterfly and parapet roofs are common on London terraces and often suit a flat-roof frame rather than an on-roof rail system, and large parts of the inner boroughs sit in conservation areas.
What to do
Check with your local planning authority for your specific property before you commit. Your installer will usually help, but the responsibility for consent sits with the property owner.
Common questions
Can you tell me if I need permission?
What does the quote cost?
Who actually does the work?
How soon will someone be in touch?
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