Castle Green is a relatively large development sited near the Yio Chu Kang MRT. It is about 5 minutes walk to the Yio Chu Kang MRT Station, wet market and eating outlets. There is also a string of public buses just outside the development.

It is a traffic-free drive to the American School, which takes less than 10 minutes by the CTE expressway. Many amenities can be found in the Ang Mo Kio Town Centre which consists of library, supermarkets, hawker centre, fast food restaurants, polyclinic, cinema and many other shops. Singapore Island Country Club, Orchid Country Club, The Golf Academy are also within short driving distance.