The Princeton Cooperative is a housing cooperative located on Capitol Hill, Seattle, Washington. It was built in 1907 and was converted to a co-op in the 1940s. It has 25 member-owned units and one unit owned by the corporation that is rented at a reduced rate to a live-in caretaker. There are three floors with eight units per floor. One unit is located in the basement as is communal storage and laundry facilities.