Quality of life of people in urban area is the outcome of people interaction with urban environment. Many studies indicate that public open space is one of important urban environment elements which give positive contribution to quality of life. This paper investigates how privatization of public open space affects quality of life of people while many studies show degradation of ‘publicness’ of public space due to privatization. Research ßnding indicates that people keep doing their social activities both in privatized and public area but physically segregated. Keywords: urban open space privatization, social activity, quality of life eISSN 2514-751X © 2017 The Authors. Published for AMER ABRA by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.