Case study of a DOE 2015 Housing Innovation Award winning multifamily project of 62 affordable-housing apartment home in the hot-dry climate that exceeded CA Title 24-2008 by 35%, with 2-by-6, 16” on center walls with R-21 fiberglass batts, uninsulated slab on grade foundation; vented attic with R-44 blown fiberglass; air to water heat pumps.