Construction of the model buildings in Petrozavodsk and Murmansk is now on-going. In Murmansk, the work has just started, and is expected to finish before the end of 2020. In Petrozavodsk, erection of the building envelope has already finished. The building is constructed with two main parts; (1) Log-house part, and (2) Wooden frame part. The walls have different types of insulation, and are instrumented with temperature and humidity sensors, placed inside and on surfaces of the elements.