CA Energy Commission’s Building Standards Hotline Answers CA residents’ questions regarding compliance with building energy efficiency standards. Hours are M-F, 8 am-12 noon, 1 pm-4:30 p.m. Website: www.energy.ca.gov/releases/1999_releases/1999-06-30_standards.htmlEmail: title24@energy.state.ca.usPhone: 800 772-3300Date Updated: 10/3/2013