The local authority of Subingen is situated just a few kilometres from the city of Solothurn with good public transport links.

There was a real need for senior citizens’ accommodation in Subingen. bonacasa conducted a survey on behalf of the local authority. The specifications for the homes were then drawn up and a project put in place. bonainvest was able to implement the building project as a private investor.

The project was completed in cooperation with the blanc partner architekten ag architects’ practice of Subingen. The building is Minergie certified and heat for the Birkengarten project is produced by a gas- fired heating system. In addition, the apartments comply with bonacasa construction standards.


  • Useful floor space
    in m²
  • Investment volume
    in CHF Mio.
  • Number of units

Key data

Adresse Birkenweg 2
4553 Subingen / Solothurn
Purpose Portfolio
Completion 2011
Useful floor space 1608m²
Number of buildings 1
Number of units 21 Portfolio
23 Parking Spaces
Investment volume CHF 6.9 Mio.

Residential rental index

Rooms Total of which for sale of which for the portfolio
2.5 6 0 6
3.5 15 0 15