Accessory dwelling units (ADUs) are secondary dwellings on residential lots. Sometimes called “granny flats” or “in-law suites," they can be used to house family and visitors, or as rental properties. ADUs, like all other residential structures in California, are subject to the Energy Code.

Contact

Energy Code Hotline Submission Form
Toll-free in California: 800-772-3300
Outside California: 916-654-5106

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