In the Project Programme, a joint menu of renovation options was outlined as a deliverable for the project partners of WP4. The renovation options in the menu offer building solutions that will deliver the most cost effective, energy efficient and long-lasting impact. The list has been composed during thematic work groups. The partners have been testing various options during their pilot schemes. Following evaluation of the pilots the menu has been adjusted.

A common problem in the past was that the expected results of energy efficient renovations weren't reached, especially in the rental market. The aim of Work Package 4 (WP4) has been to describe a joint method of district renovations combined with setting up a participation process with a bottom-up approach. In WP4, the partners aimed to improve renovation standards in several districts. Those involved are funded by social housing providers, local authorities and public agencies. The level of investment has been set to achieve maximum energy efficiency while remaining cost effective.