THE OTTO

Sculptural outdoor sauna with panoramic outlook and traditional burnt wood cladding

Small modern outdoor sauna with black and natural wood exterior, surrounded by grass and trees.
Small modern outdoor structure with a wooden and glass door, situated on a grassy area with trees in the background.
Modern tiny house with dark vertical wooden siding and large front window showing interior with wooden accents, situated on green grass with trees in the background.
Small modern wooden shed in a lush green landscape with trees and bushes, at sunset
A black, rectangular shed with a corrugated metal exterior situated on a green lawn, surrounded by trees and shrubs at sunset.
Small modern shed with black metal siding and wood accents, situated on a grassy lawn with trees in the background.
Empty wooden shelves with warm lighting, and a gray towel on a laundry rack in the bottom left corner.

About our Otto Sauna

Handmade in our Devonshire workshop with care, precision, and architectural intent

Exterior clad in charred timber to the front using traditional Shou Sugi Ban technique

Powder-coated black steel cladding wraps remaining sides for a bold, modern finish

Monopitch roof finished in black powder-coated steel sheeting

Toughened double-glazed panoramic window for immersive views of the surrounding landscape

Thermally modified ash benches, two-tier and floating, designed for comfort and longevity

Locally sourced sheep’s wool insulation, natural and highly effective for heat retention

Vapour barrier lining to protect internal structure from moisture over time

Built on a rigid steel base, engineered for mobility and long-term durability

Ambient interior lighting behind the benches for atmospheric evening sessions

HUUM Drop stove for soft, even heat; with optional WiFi app control for remote activation

The Otto is a handmade outdoor sauna crafted in our Devonshire workshop, combining architectural design with natural materials. Clad in charred timber and black powder-coated steel, it features a panoramic-style glass window, waterproof downlighting, and a compact 2m x 3m footprint—ideal for woodlands, gardens, or remote retreats.

Inside, floating benches in thermally modified ash and warm Thermowood walls create a serene atmosphere. Natural sheep’s wool insulation, passive ventilation, and a HUUM Drop stove—with optional app control—deliver a modern take on the traditional Finnish sauna experience.

Otto Design Brief

Size: Seats up to 4 people. 3m x 2m x 2.46m

Starting from: £30,000 inc VAT

Lead Time: 2-4 Months Estimated

Heater: Electric HUUM Drop stove. 9kW.

Insulation: Premium locally sourced sheeps wool

Internal Cladding: Thermally modified Ash

External Cladding: Thermally modified charred wood and powdercoated steel

A person barefoot, wearing a black dress, is using a black scoop to move stones in a wire basket around a metal pole.

An immersive experience

Step inside to a serene environment lined with smooth Thermowood panelling and naturally breathable sheep’s wool insulation. A vapour barrier supports internal airflow and long-term durability, while the minimal material palette creates a calm, grounding space.

View of a pink and purple sky and trees through a large wooden-framed window, with pink flowering bushes in the foreground.

Framing nature, your way

A large, toughened double-glazed picture window invites natural light and frames your view of the outside world. Whether deep in woodland or overlooking a quiet field, this connection to nature lies at the heart of The Otto’s sauna experience.

Weathered wooden planks in shades of gray with visible grain and some scratches.

The Exterior

To the front and side elevation, The Otto is clad in charred timber using the traditional Japanese Shou Sugi Ban technique and finished with black powder-coated steel, The Otto makes a bold architectural statement. Its monopitch roof, and soft exterior lighting allow it to sit quietly and elegantly in woodland, rural, or landscaped surroundings.