The first thing you should do is to check your metre box to see if your home was treated. There will be a termite sticker stating the date and what type of termite chemical was used. Keep in mind homes that were built from 2001 onwards will already have a termite physical barrier or a reticulation barrier installed. You will still have to have your home inspected every 12 months or your warranty will be voided. If your home was built before 2001 then a termite baiting or chemical barrier may have been installed. Keep in mind that the termite chemical barrier will have to be re treated every 4-8 years depending on what chemical was used.