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The 30-square-metre sauna cabin has recently been the top favourite for both cabin dwellers and those looking for a sauna cabin for their own garden. Ehta brought a 30-square-metre sauna cabin to show at the Spring Fair as early as 2025 – for the 2026 fair, a similar building was updated with the new Unelma equipment level.
Exhibition visitors admired the modern, yet authentic, cottage radiating warmth, the construction of which You don't need a building permit nowadays.
Amazement woke especially the fact that the building is ”surprisingly spacious”. Most people could not imagine that a sauna cabin of less than 30 square metres could be so airy and fully meet the needs of a cabin dweller.
In this article We will explain in detail with pictures and floor plans the possibilities of the Saunamökki 30 and reveal, Why does the building appear larger than its size.
Article content:
How a 30-square-metre sauna cabin larger than its size is built
A 30-square-metre sauna cabin is a fairly modest size for a sauna cabin. However, a well-designed unit can serve all the needs of a cabin dweller while still maintaining a feeling of spaciousness.
The Ehtan Saunamökki 30 is built with inspiration from traditional log construction. with a long floor plan. This provides entirely different possibilities for space utilisation than, for example, a box-shaped apartment in a tenement building. Therefore, the building can be surprising in many ways.
In practice, you can enjoy the 30 square metre sauna cabin for example from the tiled steam room, genuinely Avarasta tupakeittiöstä yes, separately, from a fully equipped bathroom.
A solution of this kind was also on display at Ehta's trade stand.Spring Fair 2026).
The right proportions transform the space
For the past few decades, Finland has been dominated by the ideal of wide, box-like construction. When a building is wide, it is also spacious and allows for efficient use of space.
But does the claim always hold true? And what does such a cardboard box look like?
Particularly in smaller buildings, width can, conversely, reduce the possibilities for space utilisation. The wider the space, the more difficult it is to divide it for different purposes so that unnecessary corners and partitions do not make the space feel cramped.Palomäki, V., Nevala, M., How is a house built to be moved? CE Wood project)
Old log houses have often been quite long and narrow by today's standards. In the past, houses were smaller and spaces were carefully planned to suit their purpose. At the same time, some spaces were desired to be clearly separated from each other, which a longer building allows for.Suomi, M., Traditional building in detached houses now and in the future. Tampere University of Applied Sciences.)
The Ehtan saunamökki 30 is a log building that punches above its weight, precisely because its proportions have been designed with extreme care and extensive experience – drawing inspiration from traditional log building methods.
- Sufficient width
ensure that no space feels cramped and that furniture can be navigated comfortably. - Every metre of width comes off the length.
This is why the width is optimised to be just right, so that the building can also be as long as possible. - A long building
enables the natural division of space for different purposes with simple partition solutions, making the most of the cottage's square metres and avoiding unnecessary corners.
The floor plan shows the key elements of the exhibition sauna:
- A masonry heater in the left corner of the living room, between the landscape windows.
- On the right wall, a small kitchen with an integrated fridge and sink. There is enough space for a sofa bed and a few other pieces of furniture.
- In the middle of the bathroom is a toilet, with a shower (right corner) and a water heater (left corner).
- spacious changing room with wide benches to the right and a Harvia Legend stove. The large amount of stones in the stove provides soft steam.
- The sauna cottage is surrounded by Ehta's own ready-made terrace to the front and right.
Ehtan Saunamökki 30, with its exhibition sauna and extra accessories, is like a small apartment. It contains everything you need for an extended stay.
The interior design can also greatly influence the feeling and functionality of a space. The interior design of Ehta's sauna at the fair was realised by Tapio Anttila.
👉 Read Tapio Anttila's tips for furnishing a sauna cabin under 30 square metres!
30 square metre sauna cabin Unelma with accessories
Delighting visitors at Helsinki's Spring Fair Ehtan Lakeside Cabin 30 included a wealth of extras, such as a kitchen and a proper bathroom. The sauna cottage was also built for year-round use, which is ensured by thicker 135mm glued laminated timber and floor and ceiling insulation.
Kitchen choices
- Front panel (doors): Jade
- Level Laminate worktop Black Flatting
- Gauze bandages Disc Gold
- Open shelf Natural Oven
- Hana: Vega Time
- Alas Kiwi quartz composite
- Integrated microwave and fridge: Gram
Hello is not here, because in the new building law ”built-in hob” determine if a building Designed for home use. In this case, a building permit would be required for the building, regardless of its size.
An induction hob is permitted, so it could be a good purchase for an open-plan kitchen!
Sauna Room Options
- Heater Harvia Legend 240 GreenFlame
- Loudspeakers Master Carpenter Thermo Royal
- Floor Heat-treated pine
- Ceiling heat-treated cladding panel
- Walls Tikkurila Piki (5089)
- Window Stopsol landscape window
Bathroom choices
- Floor Heated tiled floor with electric underfloor heating
- Tile Mold Timber Grit -clinker
- Sadesuihku Oras Nova Black
- Under-cabinet Ido Elegant
- Ashura Vega Time
- Toilet seat "Ido Glow"
- Hot water cylinder Jäspi VLK 100
Living room
The living area in the log cabin is designed for multi-purpose use. In the right-hand corner is the three-module kitchen with wall units, as depicted above. The sofa bed serves for both lounging and sleeping. A convection fireplace quickly heats the space and creates atmosphere.
Lighting and all fixed furnishings are pre-installed when the cabin arrives at your plot. The building is therefore fully ready for use.
Living room options:
- Thanks Smidson Vigo
- Floor Vinyl plank Timeless White Oak
- Ceiling and walls Tikkurila Bird Cherry Blossom
For the Spring Fair, the interior furnishings with loose furniture were implemented by Tapio Anttila Collection.
💡A particularly practical and popular piece of furniture for sauna cabins is by Tapio Anttila innovative sofa bed, which sofa cushions contain both duvets and pillows for sleeping. This reduces the need for separate storage space.
Price of a 30 square metre sauna cabin
30 square metre sauna cabin prices typically depend on equipment level, delivery method, building material and its quality (and from the origin).
Genuine sauna log cabins are always made from Finnish, high-quality laminated timber. The delivery method is either cost-effective and easy ready for dispatch requiring the buyer's own work Material pack.
Genuine ready-to-ship means that the building is manufactured in Finland, at Ehta's factory, fully ready for use and delivered to the customer installed on the foundations.*. Windows, doors, roofing material, a sauna stove and benches, the necessary electrical and plumbing installations, and other parts essential for use are always included.
Foundation work is not included in the price. Sauna delivery costs are not priced as they depend directly on the location of the plot. You will always receive an exact price for delivery with your quote!
If you choose modifications for ready-made delivery (e.g. larger windows) or accessories (e.g. fireplace, kitchen or bathroom with a warm tiled floor), these will also be installed in the cabin ready for use. The price of every change and accessory is clearly shown in the quote.
Genuine standard delivery
Standard delivery includes, among other things:
- Harvia sauna heater with a chimney water tank and stylish spruce plank benches
- The sauna room floor is oiled to be very moisture-resistant
- Small animal netting installed in the attic
Read the exact details of the standard delivery content here >>
Delivery in practice
The building arrives directly in the yard on the back of a lorry and is lifted onto the foundation by the truck's own crane. Installation usually takes less than two hours, after which you can even start heating the sauna!
Ehta Sauna Cabin 30 base price
Total area29.6 m²
Price: 35 300 €
With funding£600 per month
30 square metre sauna cabin price with exhibition stand accessories, ready for delivery
Total area 29.6 m²
Ehta Dream trim:
- Winter package +5,763€
(135 mm log and additional insulation for floor and ceiling) - Genuine bathroom +11 292 euros
- Genuine Kitchen +3,050€
- Electrification and lighting +€4,085
(indirect lighting) - Interior and exterior surface treatments +€3,910
- Master carpenter's benches +3 300 €
(price adjustment for standard benches) - Smidson Vigo convection fireplace +3 400 €
(incl. chimney) - Other Dream-tier equipment
Artopine external doors, hall vinyl plank flooring, sauna heat-treated floor, heat-treated slatted panel in the bathroom and sauna ceiling, Harvia Legend stove
Other accessories and modifications:
- L-terrace
- Door and window changes
Total price of the exhibition object: €78,700
30 sq m sauna cabin floor plans for different needs
The building can be constructed with several different floor plans. Ehtalla, the customer always has free rein to influence the floor plan (within the terms of log construction). Familiarise yourself here with a few examples that deviate from standard designs, which may give you ideas for building your own cabin.
Sauna cabin 30B
If you want to maximise the number of sleeping places in the sauna cottage or otherwise separate the sleeping area from the living room, a separate sleeping alcove can also be built into the 30-square-metre sauna cottage.
At which point Settling Let's sort it out in the sauna. Visit sauna It can also be from the end of the sauna, ensuring that heat and steam do not travel to other rooms. The depth of the steam room ensures there is enough space for washing.
Sauna cabin 30C
U-shaped benches are the best solution for maximising the number of seating places in a sauna. For washing, a bathroom similar to that in a trade show sauna can be implemented, or a simple and affordable washing area with a water basin.
It is also possible to bathe in the sauna, in which case the remaining space can be used as, for example, a hall/changing room.
Sauna cabin 30D
A separate toilet and changing room is also one possibility to utilise the length of the sauna cabin, if a proper bathroom is not deemed necessary. Access to the sauna is from the outside to minimise steam and heat. The door solutions of the 30C model are also entirely possible.
The basic layout and the overall design are always planned with the customer's needs and wishes at the forefront. In principle, all door and window positions, as well as partition walls, can be altered – and of course, the room layout can be mirrored. The building can also be slightly shortened if, for example, local building code interpretation requires it.
How does Ehta serve a person with dreams?
If a sauna cabin or other holiday property is being planned now or next year, feel free to get in touch! We'll have an answer to all your questions.
Our designers and log builders have hundreds of cottages and saunas built between them. It's part of our operating principle that we never ”hard sell”, but respect the customer's own process and timelines at every stage.
