In retirement, we have decided to sell and relocate our primary residence. We have the option to build or buy existing. However, to buy a lot and build will require installing a well and septic system, as there are no lots available in our price range with city sewer/water. The option is to buy an existing residence within the boundaries of the city water/sanitation system. Lots are inexpensive, but in this area, to install well/septic adds $30-35K to build price. So.....Buy existing with city water/sanitation or lot with well/septic? Total cost at the end of the day is similar.