Single Family Home Eye on Housing rough timeline How Long Does it Take to Build a Single-Family Home Survey of Construction Building a House: Time Well Spent? compared to the normal 6 month construction period. The average home takes about 7 months to build takes seven months to build 2014 survey 7 months 2014 survey how long a project that spans a couple of months average build time Time to construct home Eye on Housing Building a new home takes six to 12 months 7 months