For the purposes of completing the review, we reviewed more than 400 literature sources and conducted approximately 25 interviews on housing and municipal assets. We followed a realist review approach for this review. Realist reviews ask five key questions: (1) What are the embedded institutional knowledge and attitudes?; (2) What mechanisms are at play? (Understanding and describing existing processes and different layers of reality that impact on causality); (3) What is the context? (Geographical location and historical context are two important aspects to be considered.); (4) What regularities can be seen (i.e. patterns, associations or outcomes)?; and (5) What change is seen to be occurring and what triggers this change?