Castle Hill Town Centre was accorded Major Centre status within the Sydney Metropolitan Strategy. A planned heavy rail station and bus interchange was proposed to be delivered by 2014.

This Concept Masterplan proposes a new public domain, including a town square and new streets, on the existing council carpark site in Terminus Street. The proposal also includes re-locating The Hills Shire Council offices and a new cultural centre to the site.

Following Council adoption of the Concept Masterplan, OAA prepared a detailed DCP for the area, which is the current DCP document.