Properties / Marketside Flats


Marketside Flats, formerly the 84 Union Building, stands as a testament to Seattle’s identity as a port city and is significantly associated with the history of immigration in the Pacific Northwest. As the volume of people entering the U.S. through the Puget Sound increased, the need for a larger facility was paramount. It was then that 84 Union replaced the Port Townsend facility as the new regional headquarters of the federal immigration service. From 1916 until 1931, 84 Union was the entry point for thousands of immigrants. Afterward, it served as the headquarters of the Cannery Workers and Farm Laborers Union and a hiring hall for the great Alaska salmon canneries until 1943.

The boutique-style Marketside Flats is a Registered Landmark and its one-of-a-kind interiors reflect this uniqueness. Wood floors, custom cabinetry, and slab granite countertops complement the historic amenities, such as high ceilings and large operable windows. Other sophisticated finishes include: undermount sinks, tile backsplash, built-in wine chillers, and a new, innovative air purification system. Residents enjoy signature Seattle waterfront views are enjoyed from the expansive rooftop deck.