For 15 years we are experienced in research and development of giving the NEXT LIFE to a location or to a specified building. With the result: a lot of beautiful examples being rehabilitated, renewed and being built. A feasibility study should take care of a lot of aspects. Besides technical aspects the way to realize is also influenced by social, cultural, urbanistic, financial and even somethimes by political aspects. To collect all those aspects, to relevant and to combine them, we developed a specified research method called: REHAB. By using this method we are able to define the chances to succeed in an early stage of the process. Looking at the building and its site we define five different perspectives: Small, Medium, Large, XLarge and XXLarge. By putting all the parameters together a clear choice can be made: Do or don't.