The Puyallup Longhouse project, The Place of Hidden Waters, is a new model in culturally and environmentally responsive housing for the Puyallup Tribe in the Pacific NW. This project complied with the Evergreen Sustainable Development Standard (ESDS v1.0) but also achieved LEED Homes Platinum Certification and was selected by USGBC as the Innovative Project of the Year in 2012. O’Brien360, as the LEED Homes Provider and Green Rater on this project, participated in design charrettes during the early design phase, provided early infiltration performance testing to assist with air sealing strategies, and helped develop Energy Performance Monitoring and Operations & Maintenance Plans using HUD technical assistance grant funds.