Wales Planning Checker
A quick guide to whether your project might be permitted development in Wales. Not a formal decision — but a helpful start.
Is your home a listed building?
Are you in a conservation area, National Park (Eryri) or AONB?
Will the extension face, or go beyond, the front of the house toward a road?
Will it be taller than the existing roof, or higher than 4m?
Is it a large rear extension (over ~4m for detached, ~3m for others)?
Guidance only — not a formal planning decision. Welsh permitted development rules are specific and your council has the final say. We'll confirm properly before you spend anything.
Not sure whether to build, wait or move?
That's exactly what the call is for. We'll be straight with you — no pressure, no jargon, no nasty surprises.