Installation
Do You Need Planning Permission for an Outdoor Sauna in the UK?
A clear guide to UK planning permission rules for outdoor saunas — when permitted development applies, and the rare exceptions where planning consent may be required.
By Wellness One Lifestyle · Published 2026-08-02 · Updated 2026-08-02
Planning Permission for Outdoor Saunas in the UK
One of the most common questions from prospective buyers is whether an outdoor sauna requires planning permission. The short answer, for the vast majority of UK properties, is no.
Permitted Development Rights
Under the Town and Country Planning (General Permitted Development) (England) Order 2015, garden buildings — including outdoor saunas — are classified as permitted development provided they meet certain criteria:
- The building is in the curtilage of a dwellinghouse
- The building is not used as a dwelling
- The total footprint of all outbuildings does not exceed 50% of the total garden area
- The building is not forward of the principal elevation of the house
- The maximum eaves height is 2.5m (or 4m for a dual-pitched roof)
All Wellness One sauna models fall within these permitted development criteria for standard residential properties.
Exceptions
Planning permission may be required in the following circumstances:
- Listed buildings — any external structure requires listed building consent
- Conservation areas — permitted development rights may be restricted
- Areas of Outstanding Natural Beauty (AONB) — additional restrictions may apply
- Properties where permitted development rights have been removed by a planning condition
What to Do
If you are unsure whether your property is subject to any of these restrictions, the Wellness One team will advise before installation. In most cases, a simple check of your property's planning history is sufficient to confirm permitted development applies.
Frequently Asked Questions
Do I need planning permission for an outdoor sauna?
No planning permission is required for the vast majority of Wellness One installations. The saunas qualify as permitted development under standard UK planning rules. The only exceptions are listed buildings or properties in areas of outstanding natural beauty.
What is permitted development for garden buildings?
Permitted development rights allow homeowners to build certain structures in their garden without planning permission, provided the structure meets specific criteria on height, footprint, and proximity to boundaries.