Willis Engineering, Inc. is a full service structural engineering firm specializing in projects for the residential building sector. We offer our clients a wide spectrum of services with a focus on client service, quality, reliability, integrity, timeliness, and ingenuity. We have extensive experience in most residential project types from remodels and additions to single family custom and production housing to large scale multi-family complexes. We are licensed in multiple states with our center of operations located in Phoenix, Arizona.