Third Place Commons is a 501(c)3 nonprofit organization founded in 1999 to manage the Commons for the community.  Adjacent to Third Place Books on the upper level of the Town Center at Lake Forest Park, the Commons is a large and flexible community space that encourages both spontaneous and organized activities. Features include seating for four restaurants, free Wi-Fi, a safe place for children to play in sight of their caregivers, a semi-private meeting room, and a stage.

Every year, Third Place Commons hosts over 900 free public programs for people of all ages, interests, and abilities.  With play and learn programs for infants, concerts by Shoreline School District students, educational opportunities for adults, and activities for seniors, the Commons is a lively and welcoming place for everyone.