OptiPort – Development and evaluation of optimized climate-neutral refurbishment paths for the portfolio management of multi-family housing stocks taking into account restrictions

Housing companies play a decisive role in achieving the goal of a climate-neutral building stock. Unlike private actors, they always have the entire portfolio in mind when it comes to energy-efficient refurbishment and replacing heating systems but have so far often taken a less structured approach to developing a refurbishment strategy. Some of the existing tools on the market are not very practical and only take the specifics of companies into account to a limited extent. 

In the OptiPort project, a tool is to be developed together with the housing industry in order to create an optimized refurbishment roadmap for multi-family house portfolios that takes into account the company-specific framework conditions. The result is a roadmap for the portfolios examined, which shows which measures should be implemented on which buildings and at which times in order to make the best possible use of the available resources and capacities. The close involvement of the housing industry ensures that the tool delivers practical results that are robust in the face of uncertainties and can be used for different inventory data qualities and over the long term. 

In addition to the overall coordination of the project, the IÖW is responsible for the socio-economic and ecological analyses of the identified refurbishment options and the developed refurbishment roadmaps. Among other things, the impact of the packages of measures on the situation of the tenants affected is being investigated. In addition, the IÖW is conducting a stakeholder process with a focus on the Berlin location, in which the needs and obstacles to implementation are examined from the perspective of the stakeholders involved and specific recommendations for action are developed.