Board discusses ADU changes in 2024 codes and potential zoning alignment to encourage accessory units

Feb 18, 2026

Members reviewed 2024 IRC provisions that ease ADU creation (including split ADU allowances and interconnected detector requirements) and discussed making ADUs a use by right in zoning to encourage more units.

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Board members reviewed IRC provisions (including appendix BC and IRC section R302.3 referenced in discussion) that make accessory dwelling units (ADUs) easier to create and discussed aligning zoning to make ADUs a use by right. Staff explained 2024 language permits certain split ADUs in existing single-family dwellings when detectors are interconnected, and noted that some of the appendix language would need to be adopted to obtain specific ADU allowances.

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