A private swimming pool is one of the biggest projects you can build at home, and one of the most rewarding. The planning side is often simpler than people expect, because in planning terms a pool is treated like any other outbuilding. The construction side is where the experience counts. Here is what you need to know before you dig.
When does a swimming pool need planning permission?
Usually permitted development
- A garden pool behind the house
- An indoor pool hall within the outbuilding height limits
- Pools that keep buildings and additions within half the land around the house
Needs planning permission
- A pool forward of the front of the house
- A pool at the side of the house in a conservation area or the Cotswolds
- Any pool at a listed building
- A pool hall above the height limits
Pool halls follow the outbuilding height limits: 2.5m within 2m of a boundary, otherwise 4m with a dual-pitched roof or 3m with any other roof, with eaves no higher than 2.5m. See the full outbuilding rules.
In a National Landscape?In the Cotswolds and other National Landscapes, buildings, enclosures and pools more than 20m from the house are limited to 10m² in total, which rules out most pools far from the house without planning permission.
Indoor or outdoor pool?
| Outdoor pool | Indoor pool (pool hall) | |
|---|---|---|
| Use | Mainly seasonal, unless heated and covered | All year round |
| Planning | Outbuilding rules for the pool and any enclosure | Outbuilding rules for the pool hall |
| Building regulations | Depends on what is built around it | Applies, especially ventilation and thermal performance |
| Plant room | Needed for filtration and heating | Needed, plus ventilation and dehumidification |
| Landscaping | Key to the finished result | Matters for access and the view out |
Does an indoor pool need building regulations approval?
A pool hall must meet the building regulations, with particular attention to ventilation and thermal performance, because warm, humid air causes condensation and heat loss if the building is not designed for it. The same planning rules and building regulations apply to buildings housing hot tubs and sauna cabins.
Plan the plant room earlyFiltration, heating and, indoors, air handling all need space. Leave room for a plant room at the design stage rather than squeezing it in later.
Should I choose a one-piece or a bespoke pool?
One-piece pool
- Built off-site, then transported and lifted into place
- Saves time during construction
- Set shapes and sizes
- Needs access for delivery and lifting
Bespoke pool
- Formed on site
- Any shape, size or design
- Suits awkward sites and integrated landscaping
- Longer build on site
How is a swimming pool built?
- Design and checksAgree size, position and type, and confirm whether planning permission or building regulations approval is needed.
- Excavation and groundworksDig out, manage any ground water, and prepare the base, with temporary support where space is tight.
- The pool structureLift in a one-piece shell, or build the bespoke structure on site.
- Plant and servicesPipework, filtration, heating and electrics, connected to the plant room.
- The pool hallFor indoor pools, the building itself, designed for ventilation and insulation.
- Surrounds and landscapingPaving, steps, lighting and planting to finish the space.
What pool projects have you built?
Coombe Farm, Malvern: a subterranean pool house, swimming pool and associated works, including enabling works and retaining walls to widen access.
Combe House, near Oxford: a pool house, pool and tennis courts, alongside the restoration of a Grade II listed manor house.
We also build jacuzzis, tennis courts and 4G pitches, and because we are groundworks contractors first, the digging, drainage and retaining structures are done by the same team. See the case studies.
Planning a project like this?
We can visit the site, explain what your project needs and give you a clear, itemised quote.
Frequently asked questions
Does an indoor pool need building regulations approval?
A pool hall must meet the building regulations, particularly for ventilation and thermal performance, so speak to building control or your builder early in the design.
Do hot tubs follow the same rules?
Yes. The planning rules and building regulations for indoor pools also apply to buildings housing hot tubs and sauna cabins.
What is a one-piece swimming pool?
A pool shell built off-site, transported to your property and lifted into place, which saves time on site. Bespoke pools are formed on site in any shape or design.
Can I build a pool in front of my house?
Not under permitted development. Like other outbuildings, pools are not allowed forward of the principal elevation of the house.
Sources and further reading
- Planning Portal: Indoor swimming pools
- Planning Portal: Outbuildings, planning permission
- GOV.UK: Permitted development rights for householders, technical guidance
This article is general guidance for England, correct when last reviewed. Rules differ in Wales and can be changed locally (for example by Article 4 directions or planning conditions), so check with your local planning authority or building control before starting work.