This research focuses on the treatment of public open spaces (POS) in multi-family housing areas in post-socialist Central and Eastern European (CEE) countries. The aim is to evaluate their quality and sustainability and to identify all important impact factors influencing their properties. A case study was conducted on a representative sample of four multi-family housing sites in Nis, Serbia. Determining the interconnection between urban planning parameters and the realized quality of POS is one of the primary objectives that could lead to forming recommendations for future multi-family housing development, including more usable and sustainable POS in the current social and economic context. The models for improvement of POS quality and sustainability are defined as a research result
