Every house in BCS has mural painted on its walls, this is especially true in CZ where almost all of the public walls are painted. However, these were white until the late '70s. According to member folklore the album cover of Pink Floyd's Dark Side of The Moon was the first one painted. By 1990s almost half the walls were covered with art. Many murals had to be removed due to a seismic retrofitting in the spring of 2007. In the early Spring of the 2020 COVID-19 pandemic CZ instituted a self quarantine and no visitors policy, there were approximately 50 members living in the house during that period.