2045 Mt. Diablo St, Concord
As a parent to a young boy I’ve been in my fair share of LEGO stores but this is the first independently owned LEGO store I’ve been to. Located in downtown Concord in the Bacon Block building where Vinnie’s Bar & Grill is, to get to King Bricks head up to the second floor and there will be a small room chock full of LEGO sets, mini figures; they even sell blocks in bulk. They also buy and sell used sets. Note that they are only open on weekends. Check out their website here.