The National Physical Development Plan (NPDP) stems from the Physical Planning Act of 2003. It is meant to provide a strategic, national spatial development framework that addresses current development issues, and provides a platform for feasible private and public sector development initiatives, reflecting local cultural values and aspirations over the next twenty years. The Sustainable Island Resource Management Zoning Plan (SIRMZP) of 2012 is itself designed to serve as a revised NPDP that meets the criteria of the Physical Planning Act.