The Jack

Seattle’s Historic Neighborhood, Enhanced For Today

The Jack represents a premier boutique office offering in Pioneer Square’s legacy- and amenity-rich neighborhood. The modern office building, located on the edge of the Seattle waterfront, enhances the historic neighborhood with design elements, textures, and materials from Urban Visions and Olson Kundig, featuring authentic artifacts reviewed and historically analyzed by an archeologist. Designed to accommodate and meet the demands for a high-tech and innovative workforce, the building enjoys an unobstructed view of Elliott Bay. The structure consists of seven stories with one level of below-grade parking, a mid-lock lobby to provide a secure entrance for tenants and visitors, and a 16,000 square foot landscaped rooftop terrace and amenity space.


  • Address: 74 South Jackson, Seattle, WA 98104
  • Status: Under Construction
  • Client: Urban Visions
  • Architect: Olson Kundig
  • Structural Engineer: Coughlin Porter Lundeen
  • Size: 171,294 SF

The Jack topped out in December 2022, marking the end of structural construction and the start of exterior finishes and interior work.

Building on History

The Jack is positioned right at the old Seattle waterfront line. The area is known for having unsuitable soil, and was originally constructed more than 10 feet below the current grade. During excavation, JTM experienced an increase in site water as summer turned to fall and the water table began to rise. Additionally, the amount of material that was required to be removed from the site, including old lumber, discarded steel and concrete, and other debris, added to the overall instability of the soil on the site. These conditions made it too hazardous to move heavy equipment down to drill and pile.

JTM developed a solution by placing between two-to-three-foot deep quarry spalls to then pour a level working pad over. We then moved our drilling and piling equipment down to the areas that were previously hazardous and unreachable.

Project Team