Frequently Asked Questions (FAQ)

What drawings are required for plan check for a 400 square foot addition? Are Title 24 calculations required to be part of the drawings?

Attached is a link to an informative guide titled One-and Two-Family Residential Building Code Requirements outlining minimum plan submittal requirements.

If the property is located in an area served by the County of Los Angeles Department of Public Works you may contact a Building and Safety District Office that serves your area for specific questions regarding your project. A link is provided below to identify the location of district offices.

A complete Certificate of Compliance (Form CF-1R) is required for an addition and should be part of the submittal for plan approval. The compliance approach may include calculations for the performance approach, but under certain conditions you may use a prescriptive approach (Package) allowed by the California Energy Commission. Please contact the California Energy Commission at 1 (800) 772 3300 for specific questions regarding your project.

  Residential Requirements (LA County)

  County of Los Angeles Building and Safety Offices
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