Sustainable urban spaces are those where all scales of development aim towards accomplishing a better-quality 
built environment. Therefore, sustainable urban spaces emphasize the association between green urban design 
and sustainability as an entry point to ensure quality of life. 
This research aims to recommend key performance indicators (KPIs) of smart sustainable urban spaces which 
affect the quality of life and can be easily applied by users as self-assessing criteria for evaluating urban spaces. 
The research methodology relies on an inductive approach to determine KPIs for measuring or achieving smart 
sustainable cities (SSC) and urban spaces. Besides, various dimensions of quality of life are studied. An 
analytical method was also applied in the study through a questionnaire that enquired/questioned the impact of 
smart sustainable urban spaces and their relationship to achieve quality of life. 
Finally, a set of results, including KPIs of smart sustainable urban spaces affects quality of life (QoL). The 
relative weight of KPIs was developed of smart sustainable urban spaces to make self-assessments to improve or 
create an urban space.