Residence Koppenstraße, Berlin-Friedrichshain, Germany

  • Renovation of a former washhouse and conversion into a residence meeting low-energy house standards KfW 70 (EnEV 2007)
  • Addition of extra floors in highly-insulated timber construction with 30 cm cellulose insulation, the existing building enhanced with 20 cm additional thermal insulation
  • Earth products create a stable indoor climate (room humidity and temperature)
  • Diffusion openings in wall structures mean no extra ventilation mechanisms are required

Arnd and Gerrit Engel

Living area 
835 sq m

Architect (design planning) 
Roswag & Jankowski Architekten

Architect (detailed design / supervision)
Roswag Architekten

Structural Engineer, Building Physics LP 1–5
Ziegert | Seiler Ingenieure


Rental of the high quality and individually furnished apartments
marxapart – Wohnen auf Zeit in Berlin

Gerrit Engel, Daniela Friebel


Klar, A.: Ein Engel im Waschhaus, published in: Berliner Morgenpost, Edition 33. Woche, 20.08.2016, P. 4–5