California Does It Again

On July 17, 2008, California became the first state in the nation to incorporate green building standards into its building codes. The codes, developed by the California Department of Housing and Community Development (HCD), will be phased in over the next three years.

The standards address the following key issues:

• Energy Efficiency (to be phased in beginning July 2009): The HCD standards require compliance with the California Energy Commission’s Residential Energy Efficiency Standards, which will increase the stringency of existing statewide energy standards by 20 percent. The new standards will make new California homes approximately 50 percent more energy-efficient than homes built to national energy standards.

• Air Quality, Moisture Control & Resource Conservation (to be phased in beginning January 2011): There are 16 features in this category that will become mandatory at the same time as the new 2010 edition of the California Building Code takes effect. Among these features are requirements for low- or no-VOC (volatile organic compound) adhesives, paints and coatings; high-efficiency air conditioning filters to better filter out dust and particulates; and always-on exhaust fans to ensure better fresh air circulation in the home.

• Water Conservation (to be phased in beginning July 2011): The HCD standards require a 20 percent reduction in overall water use within all new homes . While this new water-conserving building code will allow a variety of compliance options, it is anticipated that compliance with this requirement will commonly be met via installation of new super-low flow toilets and showerheads.

Los Angeles and San Francisco have adopted even stricter rules, and the state regulations won't trump these higher standards (this had been a major sticking point in the legislation).

We applaud California for passing this law and hope that other states will follow California's lead.