The Samish Tribal Historic Preservation Office (THPO) provides consultation services to public and private agencies, works with other tribes and museums to implement the Native American Graves Protection and Repatriation Act (NAGPRA), and maintains and houses the archaeological collections. The THPO strives to build interagency relationships, protect and preserve Samish heritage and resources, and be a resource for local and tribal communities.

The Samish THPO actively participates in local and regional projects, conducts archaeological and project site visits, monitors archaeological sites, and conducts NAGPRA consultation. The THPO stays up-to-date on current happenings in Cultural Resource Management by attending regional conferences, meetings, and trainings and consults on projects at city, county, state, and federal levels.