Open house



The BMW15 apartment building in Thun is an innovative showcase project: it stands on the first cellar made of wood in Switzerland, does not require heating and was built entirely without concrete. On Saturday, 13.11.2021 is open house. Lectures and taster yoga lessons are offered - and the still free 2.5-room rental apartments can be visited.

The BMW15 apartment building in Thun is full of innovations. That is why we invite interested people to visit at the open day. The lectures, free trial yoga lessons in the basement community room made of wood and guided tours will be offered between 10.00 am and 2.00 pm. 

Date: Saturday 13.11.2021 between 10.00 h and 14.00 h.

Location: apartment building Blümlimattweg 15 Thun

Registration: We kindly ask you to register via the Doodle Link

How to get there: By public transport. Nearest parking spaces at the catholic church, Göttibachweg.

Anfahr Blümlimattweg 15

Kindly invite:

Yamanakako AG, Stefan Zöllig and Regula A. Bircher, building owners, Thun 

Timbatec Holzbauingenieure Schweiz AG, Thun 

Timber Structures 3.0 AG, Thun

Doris Baumgartner, Spiegel

The project

First basement made of wood  

What seemed impossible for a long time is now a reality: Thun is home to the first apartment building with a basement made entirely of wood. Houses without heating or air conditioning make an important contribution to climate protection. An even greater potential for energy savings lies in the choice of building materials. 

Wood is already widely used in building construction. The next step is to dispense with climate-damaging building materials such as steel and concrete - including in basements and floor slabs. In order for basements to be mass-produced from wood in the future, a number of research questions need to be clarified. A research project of the Bern University of Applied Sciences together with Timbatec, TS3 and other business partners is currently addressing these questions. A start-up is to be founded from the group of research partners, which will be operationally active from 2023. 

DeepWood research project

The DeepWood project refers to the future further development of the BIM maturity level from Level 2 to Level 3 and faces the challenge of how the collaboration of several users can be organized simultaneously in a common model. The BMW15 apartment building is the Living Lab for this research project with the Lucerne University of Applied Sciences and Arts and the Bern University of Applied Sciences.


A lot of wood is visible on the outside and inside. The TS3 technology allows for a column-and-panel construction method. The TS3 joints remain visible in this project

Die Entstehung



Thun Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Niesenstrasse 1, 3600 Thun

Tel: +41 58 255 15 10

Zürich Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Ausstellungsstrasse 36, 8005 Zürich

Tel: +41 58 255 15 20

Delémont Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Avenue de la Gare 49, 2800 Delémont 

+41 58 255 15 40

Bern Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Falkenplatz 1, 3012 Bern

Tel: +41 58 255 15 30


Headquarters Vienna (A) 

Timbatec Timber Construction Engineers GmbH
Im Werd 6/31a, 1020 Wien 
Tel: +43 720 2733 01


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