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Title 24 Energy Efficiency Standard

Energy Efficiency Standards for Residential and Nonresidential Buildings were established in 1978 in response to a legislative mandate to reduce California’s energy consumption. These standards can be found in Title 24, Part 6 of the California Code of Regulations. Projects that apply for a building permit on or after January 1, 2010 must comply with the 2008 Standards that went into effect then.

Title 24 is an energy efficiency standard that requires a series of energy calculations to demonstrate compliance with the standards. Changes to theses standards are made to account for improvements in conservation strategies and technologies, as well as improvements in analyzing building energy performance.

The simplest way to comply with this standard is to show that your home meets each minimum or maximum level prescribed for each of these areas:

  • Building Envelope [aka Insulation and Fenestration (i.e. windows and doors)]
  • Mechanical System
  • Indoor Lighting
  • Outdoor Lighting
  • Water Heating

Compliance with these standards reduces energy costs, increases reliability and availability of electricity, improves building occupant comfort, and reduces impacts to the environment.

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