Address : 96-100 Toongabbie Road, Girraween NSW 2145 Phone No. : 1300 255 999 Allcastle Homes has been a luxury home builder in Sydney, Blue Mountains, Newcastle & Wollongong for nearly 30 years. With display home locations around Sydney, you can view our range of affordable double and single storey homes, duplexes, knock down rebuilds, homes for narrow or sloping blocks, homes with granny flats and also complete home and land packages.