Answer
Do I need planning permission for an outdoor kitchen?
Usually not for a ground-level kitchen, but any covering structure follows the outbuilding rules.
In short
A built-in outdoor kitchen at ground level normally needs no planning permission. If it sits under a pergola or covered structure, that follows the outbuilding height rules. Separately, the gas and electrical work must be installed and certified by registered trades, which is a building-regulations matter rather than planning.
A note
General guidance, not advice. Rules vary by site, and Article 4 directions or conditions can change what applies. Check with your local authority and the Planning Portal.
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