This study, building on regional studies by UN-Habitat and the OECD on the state of NUP for the 35 OECD member countries, provides a first attempt at assessing NUP trends, strengths and ways forward across member and non-member countries, and paves the way for the definition of a common methodology to monitor the progress of NUPs at the global level. In terms of NUP development stages, 92 countries (61 per cent) already implement their NUPs, whereas 58 countries (39 per cent) are in the process of developing NUPs. Only 19 countries (13 per cent) have reached the monitoring and evaluation stage. The stage of NUP varies by region.