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The Department of Archaeology and Historic Preservation is Washington State's primary agency with knowledge and expertise in historic preservation. We advocate for the preservation of Washington's irreplaceable historic and cultural resources—significant buildings, structures, sites, objects, and districts—as assets for the future. Please feel free to call (360)586-3065 or drop by our office if you need assistance.  The office is open Monday through Friday -  8am to 5:00pm. However, staff may be available at different hours than DAHP regular business hours. Please see Meet the Staff page for each staff member’s hours.