Exchange Building 1_Hero52_Hero43_Lobby4_Lobby25_TenantLounge6_TenantLounge2 Address 821 2nd Avenue Seattle, Washington 98104 Building Details Office – 316,689 SQ FT23 Stories The Exchange Building is a 23-story office building located in downtown Seattle. Originally designed for the Seattle Stock Exchange in 1930 by the John Graham Company. Ken Moczulski and John Lee while at Cresent Real Estate