There are lots of granny flats in Campbelltown and that is because people realised how helpful such a dwelling can be. Plus, the population keeps on growing so there are never too many houses built. Not to mention that teenagers these days want to be more independent and choose to leave their parents\' homes. If you want to offer them their privacy, a secondary dwelling on your land is the perfect option. You will offer them a place where they can have their privacy, and all that while they are near you.