FILE - This Tuesday, May 2, 2017, photo shows a Chevron sign at a gas station in Miami. (AP Photo/Alan Diaz, File) ...

For a 2,500 square-foot case study home in Metairie, Louisiana, a two-foot freeboard optimizes the combined savings for landlord and tenant, with joint life-cycle NB of $23,658 and $14,978, for a 3% ...