In the UK, the term home warranty refers to the warranty and insurance provided with new build homes by the likes of NHBC and GHW. Usually lasting for 10 years, the new home warranty and insurance protects the first or subsequent purchasers of the new build home against damage caused by structural defects that might arise as a consequence of poor workmanship during the build process.NHBC has about 80% market share in the UK of the new homes warranty market.