Garden room guides
Do you need planning permission for a garden room?
Most garden rooms fall under permitted development as an outbuilding, but the details matter — here's the general position.
When permitted development applies
Single-storey outbuildings, including garden rooms, generally fall under permitted development provided they stay within height limits, sit behind the principal elevation of the house, and don't push the total coverage of outbuildings and extensions in the garden over the permitted limit.
When you're more likely to need an application
Using the garden room as separate, self-contained living accommodation — with its own bathroom and kitchen, or as somewhere someone sleeps — is more likely to need planning permission. Listed buildings and conservation areas can also bring tighter restrictions.
Related reading
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Frequently asked questions
FAQs.
Can I use a garden room as a guest bedroom without planning permission?
Occasional guest use is generally treated differently from permanent, self-contained living accommodation, but this is worth checking for your specific plans and property.