Back in New Orleans, Kevin meets homeowner Rashida Ferdinand and her architect Rick Fifield for a look at the plans and model of the proposed work to her shotgun single. The plan calls for a camelback addition that will house a master suite, and also... (more) a new family room with back and side porches to take advantage of the cool river breezes. As demolition begins inside, builder Carl Hithe shows master carpenter Norm Abram how the house was originally constructed from dismantled bargeboards taken from vessels that once traveled down the Mississippi. At Musicians Village, Kevin meets Executive Director Jim Pate to see how Habitat for Humanity's houses are constructed post-Katrina, starting with an extensive foundation system that includes 35-foot deep pilings tied into a robust footing system. As work progresses at Rashidas house, the discovery of toxic mold is a setback, until mold remediation expert Dr. Eric Griggs arrives to begin a whole-house remediation and prevention program for the old part of the house.