

Yakia 400 Series
Yakia 400 L Outdoor Sauna
Corner glazing and a covered canopy.
£14,394
Fully installed, inc. VAT (£11,995 + VAT). Short lead times.
- Free site survey
- Delivery to your home
- A prepared, level base
- Dedicated electrical connection by our qualified electrician
- Full assembly and installation
- Electric heater, sauna stones and LED lighting
- External size (W × D × H)
- 229 × 229 × 235cm
- Internal size (W × D × H)
- 177 × 177 × 201cm
- Footprint
- 5.2m²
- Interior volume
- 6.3m³
- Seats
- 4 people
- Standard heater
- 9kW electric
- Lead time
- Short
- Warranty
- 2 years (Yakia)
Optional upgrades: HUUM heaters and accessories. Final price subject to upgrades and accessories chosen.
About the Yakia 400 L
A square four-person cabin with glazing that wraps the corner and a roof that overhangs the entrance. Kingspan insulated roof and a 9kW heater as standard.
A modern square cabin in vertical Thermowood cladding with black frames, a flat overhanging roof and full-height glazing. Supplied as a kit and built in place.
Best for: Families and garden views.
The Cabin
- 40mm Thermowood walls, 28mm Thermowood floor
- 30mm Kingspan insulated roof panels
- Full-height glazing with 8mm tempered bronze-glass door
- Two-level benches and backrest in thermo-aspen
- LED lighting under the benches and backrest
- Steel wall-mounted 9kW electric heater with built-in controls and timer, plus stones
Before You Order
Fitting the Yakia 400 L in Your Garden
Space. The cabin takes up 229 × 229 × 235cm, a footprint of 5.2m². Allow room around it for the door to open and for treating the timber each year. We measure up at the free site survey.
Access. The Yakia 400 L arrives as flat-packed panels and is built in place, so it will go through a standard side gate.
Power. The 9kW heater needs its own circuit from your consumer unit, drawing around 39 amps on a standard single-phase supply. Our electrician installs and certifies it — it's included in the price.
Planning. At 235cm tall, the Yakia 400 L is under the 2.5m height limit for outbuildings near a boundary, so in most gardens it won't need planning permission. Much of Sandbanks and the Poole Harbour shoreline is in a flood zone, several Poole and Bournemouth neighbourhoods are conservation areas, and the land around Wimborne and Christchurch is South East Dorset Green Belt. A garden sauna is usually still permitted development, but we check flood risk, height and boundary rules for your plot before you order.
Heater upgrade. Prefer a HUUM? As an optional extra we can fit a 9kW HUUM DROP, CLIFF, HIVE Mini or STEEL with Wi-Fi control. Compare HUUM heaters.
Get Started
Book a Site Survey for the Yakia 400 L
Free design consultation, no obligation. We reply within 48 hours — or call 07877 600117.