Prices do not include cost of Mandatory Solar Energy Systems. California Code of Regulations (CCR), Title 24 imposes energy efficiency standards on the construction of new homes in California. There are a variety of ways a home can meet Title 24 energy efficiency standards. KB Home has elected to meet Title 24 energy efficiency standards by installing a photovoltaic solar system on the Residence ("System"). Because the Residence has a System installed, Buyer is required to either purchase the System as an upgrade option or to enter into a lease for a System. For additional information, see sales agent and Solar Energy System Addendum.