Kitchen Extension Planning Permission in Cardiff

Many single-storey rear kitchen extensions in Cardiff fall under permitted development, but Wales has had its own planning legislation, separate from England's, since the Planning (Wales) Act 2015 - permitted development thresholds and processes differ from England's, so an England-focused extension guide won't reliably apply. Always check directly with Cardiff Council's planning service before finalising a design.

Where it gets more complicated

Access on Cathays and Roath's narrower terraced streets is a recurring factor for kitchen extensions, much as in any Victorian terrace city - materials and skips often have to go through the house. The more affluent streets of Pontcanna and Llandaff, with larger gardens and more side access, tend to have an easier build process but can carry conservation area restrictions on materials and roofline that the denser inner-city terraces don't.

Get it confirmed, don't assume it

A builder who works regularly in your specific part of Cardiff will usually already know whether your street sits inside a conservation area and roughly what Cardiff Council will accept - worth asking directly before you commit to a design.