In the early 1980s, the NSW State Government purchased 122 hectares at Rouse Hill for the purpose of developing a regional centre in the north west area of Sydney. Bounded by Commercial and Windsor Roads and incorporating Caddies Creek the centre is located on the former Mungerie Park Golf Course.

Since then, the Baulkham Hills Shire Council has collaborated with the State Government in formulating regional and local environmental plans to ensure services are delivered to the growing communities of the region.

In February 2003, Planning NSW and Landcom, selected Lend Lease and General Property Trust as the preferred tender for a partnering agreement to create a new state of the art regional centre at Rouse Hill, consisting of community facilities including library and community centre, schools, entertainment, retail and commercial development, residential development, transport interchange, open space and recreation areas.

When completed The New Rouse Hill project will include over 1,500 residential dwellings, up to 180,000 square metres of retail/commercial floor space, more than 20 hectares of open space, and is anticipated to be finished by 2015.