Not as far as we know. For example, the new Building Act does not recognise a notification procedure, so no notification is needed either. The only requirement in future is to report new buildings to the Tax Administration for property tax purposes.
Yes, when you choose the winter package, which is also available for aittas: 134 mm laminated log and additional insulation for the floor and ceiling. The basic package is suitable for use across three seasons. An electric radiator is suitable for heating, and Aitta 16 can have a fireplace. Read whether you need a building suitable for year-round use.
No, as long as the aitta is not intended for permanent living. All Ehta's aittas are 12–16 m², i.e. below the 30 m² limit. If the aitta has a fixed stove, it is considered intended for residential use, and then a permit is required.
The municipality's local plan and building regulations may set additional conditions or restrictions, especially when building by the shore, so check them with the municipal building control.
Aitta 13 (12.9 m²) fits a double bed and a table set, or it can be divided into two bedrooms, making it a twin aitta for two guest couples. Aitta 16 (16.1 m²) is divided into a bedroom and a living area.
Aitta 13 costs €17,400 with standard equipment and Aitta 16 €19,500. Ordered from the online store, Edukas Aitta 12 costs €12,000.
The price includes a complete building with standard equipment. Transport and installation are priced according to the delivery location, and foundations are not included in the price.
With the winter package, yes. It has 134 mm laminated log and additional insulation for the floor and ceiling. Cabin 30 with the winter package costs €37,191 (basic package €31,200).
Suitable for year-round use is not a standardised term, so compare the log thickness and insulation in the offers. Read whether you need a building suitable for year-round use.
Cabin 20, 25 and 30 (19.7–29.6 m²) do not require a building permit if the cabin is not intended for permanent living. A fixed stove makes the cabin intended for residential use, and then a permit is required. Cabin 34 and the villas are over 30 m² and always require a permit.
The municipality's local plan and building regulations may set additional conditions or restrictions, especially when building by the shore, so check them with the municipal building control.
A turnkey cabin is built ready at the Perho factory, down to the interior surfaces and fittings, and lifted onto your foundations. The transport price of a turnkey delivery includes installation.
In the cabin kit, i.e. in a kit delivery you get all the parts numbered and assemble the cabin yourself or with a local builder. The choice depends on how much time you have to build and whether transport can reach your plot.
With standard equipment, Ehta's cabins cost €23,200–35,350: Cabin 20 23 200 €, Cabin 25 27 100 €, Cabin 30 €31,200 and Cabin 34 €35,350. The villas cost €40,500–56,400.
The price includes a complete building with standard equipment. Transport and installation are priced according to the delivery location, and foundations are not included in the price. For example, a turnkey delivery of Cabin 30 to Lahti costs €3,400 including installation.
Yes, you can. With a kit delivery you get all the parts numbered and assemble the sauna cabin yourself or with a local builder. As a kit delivery, you get the standard layouts with a mono-pitch roof.
The basic package is suitable for use across three seasons and occasional winter visits: it has 90 mm laminated log, 100 mm PIR insulation in the floor and 100 mm wool in the ceiling.
If you keep your sauna cabin at a base temperature all winter, choose the winter package: 134 mm laminated log, 150 mm PIR insulation for the floor and an additional 50 mm PIR board for the ceiling. For Sauna Cabin 20 the winter package costs €4,646. Read whether you need a building suitable for year-round use.
Sauna Cabin 20, 25 and 30 are under 30 m², so they do not need a building permit if they are not intended for permanent living. If a sauna cabin has a fixed stove, it is considered to be for residential use, and then a permit is required. Sauna Cabin 34 (33.5 m²) always requires a permit.
The municipality's local plan and building regulations may set additional conditions or restrictions, especially when building by the shore, so check them with the municipal building control.
With standard equipment, Ehta's sauna cabins cost €27,800–40,900: Sauna Cabin 20 27 800 €, Sauna Cabin 25 32 000 €, Sauna Cabin 30 €36,000 and Sauna Cabin 34 40 900 €.
The price includes a complete building with standard equipment. Transport and installation are priced according to the delivery location, and foundations are not included in the price. For example, a turnkey delivery of Sauna Cabin 20 to Tampere costs €900 including installation.
Garden saunas (6–16 m²) cannot have a shower. If you want a shower, choose sauna cabin: Sauna Cabin 20, 25, 30 and 34 can have the Ehta Bathroom, with a shower and heated tiled floor. In the Unelma trim the bathroom is included in the price.
With standard equipment, Ehta's garden saunas cost €12,300–22,400 (Garden Sauna 7–Garden Sauna 16). The Edukas garden saunas ordered from the online store cost €10,400–15,400.
The price includes a complete building with standard equipment. Transport and installation are priced according to the delivery location, and foundations are not included in the price.
The cost of transport depends on the size of the building and the distance. For turnkey deliveries, the transport price always includes installation.
Example prices:
Our buildings are on display at Marketanpuisto in Espoo. See more details. You are also warmly welcome to visit our production facilities in Perho. See location and contact us.
Since the new Building Act came into force at the beginning of 2025, buildings under 30 square metres can be built everywhere without a building permit. Municipalities can set various construction-related rules in their building ordinance, which it is worth being aware of. Municipalities cannot however, impose stricter requirements than the law for obtaining a building permit.
Unlike before, a fireplace does not affect whether a permit is needed. From now on, garden saunas and other buildings under 30m2 with a fireplace can be built without a construction permit.
A building is intended for residential use if it has cooking facilities, in practice a cooker.
According to current information, an application for a derogation permit will require the same attachments as now. These are an area map, a site plan, a document showing control of the building site and a report on consultation with the neighbours.
As many as you like. The Building Act does not take a position on this. However, the local plan or the municipal building ordinance probably restricts the number of buildings.
Not as far as we know. For example, the new Building Act does not recognise a notification procedure, so no notification is needed either. The only requirement in future is to report new buildings to the Tax Administration for property tax purposes.
Yes, you can. The wall thickness or heating method of the building does not affect whether a building permit is needed. The only thing that matters is whether the building has a cooker. Under the Building Act, a building without a building permit may not be used for residential purposes, and a cooker is considered equipment intended for residential use.
Minimum distances and floor area conditions for shoreline construction vary from one municipality to another. The new Building Act has not changed this. The distance from the shore required for a smallish lakeside sauna is usually around 10-20 metres.
No. A water supply, sewer or, for example, electrical installation does not affect whether a construction permit is needed.
No, you cannot. The building rights on the plot must not be exceeded. Exceeding the building rights is only possible with a derogation permit.
We use warp-resistant, durable laminated logs. They are made from Finnish spruce grown in natural forests. Minor cracking and knots are normal and do no harm. Resin may seep from the knots at first, but this stops over time.
We recommend pier foundations or ground screw foundations for all our buildings. The foundations should be built carefully on a frost-free base, so that they are stable and the building does not shift. We will provide a foundation dimension drawing, making the foundations easy to build.
The minimum treatment for exterior surfaces is a colourless protective treatment that protects against moisture and mould spots. In damp seasons we recommend treating the surfaces soon after delivery. The protective treatment can also be chosen as an optional extra, in which case it is applied at the factory. Otherwise, the same guidance applies as for treating log surfaces in general.
As a rule, all our buildings are delivered in about eight weeks from the order confirmation, depending on the length of the order queue. Remember to allow for any building permit process in your schedule. Some of our models (stock models) are also available with a shorter delivery time.
A garden sauna adapts to your needs, and the floor plans can be modified in many ways. Our design starts by listening to the customer's thoughts, wishes and needs. Based on them, we design the best floor plan: the positions of doors, windows and partition walls, and any additions and removals.
Yes. When the electrical work is done at the factory, the cables are hidden and no surface wiring is needed. Once the building is in place, the consumer unit is connected to the grid. You can arrange this, for example, with a local electrical installation company.
We give a comprehensive 12-year warranty on the log frame. The floor, roof, sauna benches and electrical installations have a 2-year warranty. Other parts are covered by each manufacturer's own warranty.
Delivery is available throughout mainland Finland. There must, of course, be a road passable by lorry all the way to the site. The load is 2.6–3.5 m wide and weighs over 20 tonnes.
The Ehtasauna prices shown on our website are prices you can rely on. We haven't listed delivery prices, as freight for the sauna depends on the delivery location. But don't worry. Send us a message and the lads will work out a quote for you.
We have invested a great deal of time and expertise into the design of our saunas. Our models have been refined over the years to be excellent and functional. However, we understand that needs vary and individual modifications are sometimes necessary. Please get in touch and we can discuss what we can do.
A garden sauna or other outbuilding does not need a building permit if it is under 30 m2 and not intended for residential use. You can read more about the Building Act that entered into force on 1.1.2025 here.
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