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BayREN C&S Training: Accessory Dwelling Units (ADUs) - offered in partnership with Energy Code Ace

Wednesday, August 7, 2024
9 a.m. - 10:30 a.m.

This virtual course focuses on requirements in the 2022 Energy Code (Title 24, Part 6) for accessory dwelling units (ADU) in an event supported by Energy Code Ace and BayREN. We will discuss how to identify the ADU type and its impact on Energy Code requirements for envelope, mechanical, photovoltaics (PV), battery storage or battery ready and HERS measures. We will also review how the compliance metrics differ depending on ADU type, including the new EDR source energy metrics for new construction ADUs.


  • Establish if an ADU design is considered an alteration, addition, or a new residential building per the Energy Code.
  • Discuss the envelope (roof, walls, floors, fenestration) requirements associated with the ADU type (alteration, addition, new construction) under the 2022 Energy Code.
  • Recognize the renewable energy requirements of ADU type including photovoltaics (PV), battery storage, and battery ready.
  • Determine mechanical equipment requirements, including any HERS verification measure options that provide ADU design flexibility, and how utility source energy metric may impact those choices.

Available CEUs: AIA (1.5 LU), ICC (0.10 CEU) and CABEC (1.5 LU)

Building Department Staff
Building Professionals