CGISauna houses
Sauna houses
Eighty degrees, at the bottom of the garden.
Charred timber outside, cedar within, a glass front. Heat, then the cold night air. Repeat.
Sauna houses from £31,000 incl. VAT
6–14 m², drawn for your gardenEvery price includes VATOne crew, start to finish
The ritual
Heat, cold, rest.
The sauna house
From 6 to 14 m²: a glass front, cedar inside, the garden in view.
A cold plunge
Beside it: £6,480 incl. VAT.
A shower room
An option: £11,400 incl. VAT.
A sunken hot tub
With its own deck: £20,604 incl. VAT.
Built by KF CraftsGuide prices
What it costs, by size.
From £31,000 incl. VAT at 6 m².
| Size | Guide price, incl. VAT | On site |
|---|---|---|
| 6 m² | £31,000 – £34,000 | 5 weeks |
| 10 m² | £38,500 – £42,000 | 6 weeks |
| 14 m² | £45,500 – £50,000 | 6 weeks |
Options
Make it yours.
The glass, the cladding, the finish and the extras, each with its price. Everything can be changed in the 3D designer, and the price follows.
Every option for the sauna house, with its price 16
| Option | Price, incl. VAT |
|---|---|
| 3-panel sliding doors | Included |
| Bifold doors | Included |
| Frameless corner glass | + £7,800 |
| Western red cedar (vertical boards) | Included |
| Thermowood (horizontal boards) | + 2% of the building |
| Charred larch (shou sugi ban) | + 5% of the building |
| Anthracite composite (low maintenance) | + 3% of the building |
| Essential finish | Included |
| Signature finish | + 15% of the building |
| Bespoke finish | + 30% of the building |
| Shower room | + £11,400 |
| Smart lighting & audio | + £3,840 |
| Covered canopy | + £7,008 |
| Composite deck, 12 m² | + £5,988 |
| Sunken hot tub with its own deck | + £20,604 |
| Cold plunge | + £6,480 |
Planning
Small enough, usually, for no application.
A sauna house you use yourself goes with the house, so it is usually permitted development: single storey, behind the front of the house, no more than half the garden covered. With a flat roof, a garden building stays within permitted development at up to 2.5 m high wherever it stands in the garden: for a flat roof the eaves are measured to the top of the roof, and the eaves limit is 2.5 m.
Under 15 m², with nobody sleeping in it, building regulations approval is normally not needed. The price assumes power that can be run from the house without unusual groundwork.
| Building | Building regulations approval |
|---|---|
| Under 15 m², nobody sleeps in it | Normally not needed |
| 15–30 m², nobody sleeps in it | Not needed if it stands at least 1 m from every boundary, or is built substantially of non-combustible materials |
| Over 30 m², or anyone sleeps in it (any size) | Needed |
Why KF Crafts
Things you can check before you call.
Their attention to detail, craftsmanship, and use of sustainable materials truly set them apart.
Very knowledgeable, trustworthy and efficient team.
If you are looking for a white glove service, and quality, this is the place to go.
Questions
Straight answers.
How much does a garden sauna house cost?
From £31,000 incl. VAT at 6 m². A cold plunge beside it is £6,480 incl. VAT.
Do I need planning permission?
It depends on what the building is for. A garden annexe that someone sleeps in normally needs planning permission.
Many garden rooms are permitted development, as long as they meet the rules on height, distance from the boundary and how much of the garden they cover. Listed buildings, conservation areas and flats have tighter rules.
If an application is needed, we arrange the drawings and submit it with our architectural partner.
What does the price include?
The design, ground screws, the building itself, electrics with their certificate and the power cable from your house, delivery, fitting and clearing up. An annexe also includes its shower room and kitchenette, and their water and drainage connections.
It assumes level ground, access down the side of the house, and power, water and drainage that can be run from the house without unusual groundwork. Every difference the survey finds is explained line by line.
What comes with it when it’s finished?
The electrical certificate, building control sign-off where it applies, photos of what is in the walls taken before they were closed up, and every manufacturer’s guarantee — the Firestone EPDM roof carries the manufacturer’s own 20-year guarantee.
Made to measure
Design yours in 3D.
Choose the room, the size, the cladding and the glass. The price follows as you go, VAT included.
Or talk to us: Ivan, 07389 840483 · Hristiyan, 07934 524074 · WhatsApp Hristiyan (opens WhatsApp)