Outdoor saunas
Best outdoor saunas in the UK (2026)
A garden sauna is the biggest-capacity route into heat bathing at home, and the UK market now runs from £1,850 self-build kits to commissions priced per project. These are the six worth shortlisting.
Ranked on wall construction, what the price actually includes, capacity for the footprint, warranty terms and delivered UK cost.
The 6 best, ranked
Polar Recovery Sauna Cube
9.4out of 10
The Sauna Cube is a 45mm thermowood cabin with a tempered glass door, L-shaped alder benches and a 6kW Harvia Vega heater in the box. Thermowood is heat-treated Finnish timber that insulates on its own, so the walls need no additional lining, and the cabin holds temperature in a British winter. It ships flatpacked from a UK warehouse on a 3–4 week lead, and you either self-assemble off the tail-lift or book fitting at £1,200–£2,000 depending on where you are.
Our verdict
Most outdoor cabins at this price ship without a heater, and a 6kW Harvia alone is several hundred pounds before wiring. Getting the heater, the 45mm thermowood shell and a two metre square interior for £4,999.99 makes this the strongest price per person of anything we ranked. The catch is the electrical work: the Vega wants a dedicated 32A supply, which means an electrician before your first session.
Ideal for
- Gardens with space for a 2.1m × 2.1m footprint
- 3–5 person households who will actually share it
- Buyers who want the heater included and UK stock
Not ideal for
- Wood-fired purists, since the Cube is electric only
- Anyone without budget for a 32A supply run
- Tiny patios better served by an indoor cabin
- Walls
- 45mm thermowood, no extra insulation needed
- Heater
- 6kW Harvia Vega, included, dedicated 32A supply
- Internal size
- 200cm × 196cm × 140cm
- Capacity
- 3–5 people (Mini 2p £4,799.99, XL 6–8p £8,499.99)
- Lead time
- Made to order, 3–4 weeks, UK warehouse
- Warranty
- 2 years with professional installation
- In the box
- Heater, bucket, ladle, thermometer, two headrests
Auroom Mira
9.0out of 10
The Mira is the design pick: a full tempered-glass front wall, thermo-aspen interior lit by LED bench lighting, and a thermo-spruce shell built for weather. It comes as a modular kit in 1–2 and 4–5 person sizes. Auroom sells through dealers and quotes per configuration, and imported pricing lands well above the Cube's.
Our verdict
The Mira is what you buy when the sauna has to look like a considered piece of the garden rather than a shed that gets hot. Auroom is part of the Thermory group, which is the biggest producer of thermally modified timber in the world, and that shows in the shell. The catch is commercial rather than technical: dealer pricing on an imported kit lands well above the Cube for comparable capacity, and you cannot check a list price before enquiring.
Ideal for
- Gardens where the sauna is visible from the house
- Buyers who want a full glass wall rather than a window
- Anyone prioritising design over price per person
Not ideal for
- Fixed budgets that need a number before enquiring
- Buyers who want the heater included in one price
- Shaded plots where a glass front buys you nothing
- Shell
- Thermally modified spruce, built for weather
- Interior
- Thermo-aspen, stays cool to touch
- Front
- Full tempered glass wall
- Sizes
- 1-2 person and 4-5 person
- Lighting
- Indirect LED bench lighting
- Pricing
- Per configuration through dealers
Layzee Living Compact 200
8.6out of 10
The classic barrel silhouette in a 200cm length that fits narrower gardens, with the choice of a log burner or an electric heater. Budget £5,000–£6,500 all-in once a proper base and the heater choice are settled. The barrel shape heats fast for its volume; the trade is bench space, since the curve eats shoulder room.
Our verdict
At 200cm long this is the barrel for gardens that cannot take a cabin footprint, and the wood-fired option is the reason most people choose it. Budget £5,000 to £6,500 all-in once the base and heater choice are settled, which puts it above the Cube for fewer seats. You are paying for the shape and the log burner, not for capacity.
Ideal for
- Narrow gardens where a square cabin will not fit
- Buyers who want the option of a real log burner
- Two or three people rather than a family
Not ideal for
- Anyone who wants to lie down full length
- Groups of four or more
- Buyers who dislike the barrel look in a small garden
- Length
- 200cm, sized for narrow gardens
- Capacity
- 2-3 people seated
- Heating
- Wood-fired or electric options
- Kit price
- £4,200
- All-in
- £5,000-£6,500 with base and heater
- Trade-off
- Curved walls reduce shoulder room at the ends
Palmako garden sauna kits
8.2out of 10
Palmako's kits are the cheapest route to a real outdoor sauna: log-built garden buildings you assemble yourself, across a wide size range. The heater is not included, so price the stove and the electrical or flue work before comparing against the cabins above. As a shell for a self-managed project, nothing at this money competes.
Our verdict
Nothing else gets you a real outdoor sauna for under £2,000, and that is the entire case. What arrives is a log-built garden building you assemble yourself, with no heater, no stones and no controls, so the honest comparison is £1,850 plus £600 to £900 for a heater plus the electrical work. Treat it as a shell for a self-managed project rather than a cheap version of the cabins above it.
Ideal for
- Self-builders happy to project-manage the whole job
- The lowest possible entry price into an outdoor sauna
- Buyers who already have an electrician lined up
Not ideal for
- Anyone who wants one price with everything in it
- Buyers without the time or tools for assembly
- People expecting thermowood-grade insulation
- Construction
- Log-built garden buildings, self-assembly
- Entry price
- From £1,850
- Heater
- Not included, add £600-£900
- Range
- 2-6 people depending on model
- Treatment
- Untreated softwood needs regular maintenance
- Best use
- Shell for a self-managed build
Out of the Valley
9.3out of 10
Handmade cabins from a Devon workshop, commissioned rather than configured: each build is designed for its site, in cedar, with detailing closer to furniture than to garden buildings. Lead times run months and pricing is per project, which is why it sits here rather than higher; as a commission it belongs on the luxury list, where we rank it first.
Our verdict
Every build is drawn for its site and made by hand in Devon, mostly in cedar, with sheep's wool insulation and detailing closer to furniture than to garden buildings. The range runs from the compact Forest through Falco, Merula and Lutra to the mobile Aquila. It sits at five here purely because you cannot buy it this season or price it from a page, and it takes first place on the luxury list where those constraints are the norm.
Ideal for
- Sites that no catalogue cabin fits properly
- Buyers who want British workshop craft
- Projects where the sauna is an architectural piece
Not ideal for
- Anyone who needs a sauna this season
- Fixed budgets that need a list price up front
- Simple garden-corner installs a kit already serves
- Build
- Handmade to commission in Devon
- Material
- Cedar, with sheep's wool insulation
- Range
- Forest, Falco, Merula, Lutra, Calluna, Aquila
- Heating
- Electric, with HUUM among the options
- Timeline
- Months, per project
- Pricing
- Per commission
Almost Heaven barrel range
8.4out of 10
Almost Heaven is Harvia's American barrel brand, sold in the UK through wellness dealers. Solid timber barrels across several sizes, usually paired with Harvia heaters. UK pricing is dealer-set, so get a delivered quote before comparing against the Layzee.
Our verdict
Almost Heaven is Harvia's American barrel brand, which means solid cedar barrels paired with heaters from the biggest heater maker in the business. The range is broad and the build is sound. It ranks last here on UK availability rather than quality: everything goes through wellness dealers at dealer-set prices, so you cannot compare it against the Layzee without requesting a delivered quote first.
Ideal for
- Buyers who want a barrel with Harvia heating as standard
- Households choosing between several sizes
- Anyone already dealing with a UK wellness supplier
Not ideal for
- Buyers who want transparent UK pricing online
- Fast delivery, since stock comes through dealers
- Anyone comparing on price alone
- Brand
- Harvia's American barrel range
- Material
- Cedar barrel construction
- Heating
- Harvia electric or wood-fired options
- Range
- 2-6 people depending on model
- UK route
- Wellness dealers, dealer-set pricing
- Founded
- Manufacturing in the USA since 1977
Side by side
| # | Model | Score | Type | Capacity | Price |
|---|---|---|---|---|---|
| 1 | Polar Recovery Sauna Cube | 9.4 | Outdoor cabin, electric | 3–5 people | £4,999.99 |
| 2 | Auroom Mira | 9.0 | Outdoor cabin, electric | 1–2 or 4–5 people | On enquiry |
| 3 | Layzee Living Compact 200 | 8.6 | Barrel, wood-fired or electric | 2–3 people | £4,200 |
| 4 | Palmako garden sauna kits | 8.2 | Outdoor cabin kits | 2–6 people by model | From £1,850 |
| 5 | Out of the Valley | 9.3 | Bespoke outdoor builds | Per commission | On enquiry |
| 6 | Almost Heaven barrel range | 8.4 | Barrel, electric or wood-fired | 2–6 people by model | On enquiry |
Electric or wood-fired
Electric heaters win on control: a timer, a thermostat, and a cabin that is ready when you walk out to it. The cost is the supply run, since a 6kW heater wants a dedicated 32A circuit, and that circuit is notifiable work underPart P of the Building Regulations, so it has to be installed and certified by a registered electrician. Wood-fired needs no electrics at all, just a flue and a log store, and gives you the fire ritual; it also adds 15 to 20 minutes to every heat-up and someone has to feed it.
The practical split: pick electric if the sauna will be used several evenings a week, wood if it is a weekend event. Barrels like the Layzee come in both versions at the same ticket, so the choice there is genuinely open.
Height, boundaries and the 2.5m rule
The planning question decides placement more often than taste does. Within 2m of a boundary, permitted development in England caps a garden building at 2.5m overall height, which most purpose-built cabins are designed to duck under. Move further into the garden and the ceiling lifts to 3m, or 4m with a dual-pitched roof.
Four other conditions have to hold at the same time, all set out in the Planning Portal's outbuilding guidance: single storey, behind the front of the house, covering no more than half the land around the original house, and used for something incidental to living there. Listed buildings, conservation areas and flats sit outside these rights altogether, which is the detail that decides whether you needplanning permission for a garden sauna.
The base comes before the cabin
A 3-5 person cabin weighs about 600kg empty and more once it is full of people and water, so it needs a level load-bearing base: a concrete slab, paving on a proper sub-base, or a reinforced deck. Lawn, decking boards on soil and loose gravel all fail, either immediately or over the first wet winter.
Budget £400 to £1,500 for the base depending on ground conditions and how much of the digging you do yourself. Get it laid and cured before delivery day, because a made-to-order cabin arriving with nowhere to stand is an expensive storage problem.
What delivery actually looks like
Outdoor cabins ship flatpacked on a pallet by tail-lift truck, which means the driver puts it on the kerb and leaves. Getting 600kg of timber from the kerb to the back garden is your problem unless you have paid for installation, and a side alley with a step in it is the point where most self-assembly plans fall apart.
Professional fitting runs £1,200 to £2,000 depending on location. Self-assembly on a flatpack cabin is a genuine two to three person weekend, and on most makes it also changes the warranty terms, so read those before deciding which way to go.
Running costs in a British winter
A 6kW cabin costs about £1.57 a session atOfgem's July 2026 cap rate of 26.11p per kWh, and outdoor cabins sit at the expensive end of that because they lose heat to the air, the wind and the ground. Wall construction is what limits the damage, which is why 45mm thermowood earns its place in the rankings above and a thin panel does not.
Three sessions a week works out around £245 a year on electricity, against roughly £66 for an infrared cabin indoors. The full arithmetic behindwhat a sauna costs to runis worth reading before choosing between a garden cabin and a spare room, because the gap compounds over the life of the thing.
Frequently asked questions
Do I need planning permission for a garden sauna?
Usually not in England: a garden building sits under permitted development if it is single storey and, within 2m of a boundary, no taller than 2.5m overall. Most cabins on this list, including the 2.1m Sauna Cube, clear that bar. Conservation areas, listed properties and the devolved nations have their own rules, so check with your council before ordering.
How much does an outdoor sauna cost to run?
A 6kW electric heater uses about 6 units of electricity across a heat-up and session, which is roughly £1.57 at the July 2026 cap rate of 26.11p a unit. Wood-fired running cost is the price of your logs, about £4 to £7 a session.
Electric or wood-fired, which heats up faster?
Electric: a 6kW heater has a cabin this size at temperature in 30 to 40 minutes on a thermostat and timer. A log burner takes 45 to 60 minutes and needs tending, which is either the ritual you want or the chore you don't.
What base does an outdoor sauna need?
A level, load-bearing base: concrete slab, paving on a proper sub-base, or a reinforced deck. The Sauna Cube weighs 600kg before people, so a lawn or loose gravel is not an option.
How much does an outdoor sauna cost in the UK?
Self-build shells start at £1,850 without a heater. Complete cabins with the heater included run to about £5,000 for 3-5 people and £8,499.99 for 6-8. Bespoke commissions are priced per project and start several times higher.
Is the heater included with an outdoor sauna?
It depends on the maker, and it is the biggest hidden difference in this category. The Sauna Cube includes a 6kW Harvia Vega, while kit shells like Palmako's do not, so add £600 to £900 before comparing prices.
How long does an outdoor sauna take to install?
Professional fitting is usually a one to two day job once the base is ready, at £1,200 to £2,000. Self-assembly on a flatpack cabin is a realistic two to three person weekend, and on many makes it changes the warranty terms.
Do outdoor saunas need maintenance?
Yes. Most outdoor cabins need a breathable wood treatment every year or two, and on many warranties applying it is a condition rather than a suggestion. Budget £40 to £80 a time and check the maker's exact requirement.
Barrel or cabin, which is better?
Barrels heat faster for their volume and cost less, but the curve eats shoulder room at the ends. Cabins give usable bench space along every wall and sit more comfortably in a garden. Neither is warmer, so it comes down to space and taste.
Can an outdoor sauna be used in winter?
That is what they are built for, provided the walls are thick enough. A 45mm thermowood shell holds temperature through a British winter, while a thin panel cabin costs noticeably more to run once it gets cold and windy.