Grant County Planning Commission recommends ADU code changes; adds 1,296 sq. ft. cap outside UGAs
The Planning Commission voted unanimously March 18, 2026, to recommend amending Chapter 23.08.020 of the Grant County Unified Development Code to comply with RCW 36.70A.680 and 36.70A.681 and align with proposed House Bill 1345; commissioners amended staff language to cap detached ADUs outside Urban Growth Areas at 1,296 sq. ft. and attached ADUs at 60% (or 1,296 sq. ft.).
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On March 18, 2026, the Grant County Planning Commission voted unanimously to recommend an amendment to Chapter 23.08.020 (Accessory Uses and Structures) of the Grant County Unified Development Code to bring county ADU rules into compliance with RCW 36.70A.680 and RCW 36.70A.681 and to align with the anticipated 2026 House Bill 1345.
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