Funktionales Kostensplitting bei energetischen Modernisierungen als Beitrag zur nachhaltigen Entwicklung von Mietwohnbeständen.

Functional cost splitting for energy‐efficient refurbishments as a contribution to the sustainable development of rental housing stock In a dissertation was developed the Functional Cost Splitting (ƒKs), a recommended course of action for the appropriate and comprehensible determination of rent increases after energetic measures. The starting point was the dilemma between the enormous importance of energy measures on rented housing stock for climate policy goals on the one hand, and on the other hand the contradictory descriptions of their economic viability for the two parties to the tenancy agreement – between gentrification instrument and warm rent neutrality. The results of the research balance the sustainability triangle of economy, ecology and social aspects of energy measures. The work was awarded by the BUND Scientific Advisory Board with the Research Prize for Sustainable Development 2020. The following article presents the basic principles and working methods of ƒKs as well as the first results of a still ongoing qualitative evaluation. [ABSTRACT FROM AUTHOR]