Consultants: ADU and ‘middle housing’ rules will require code changes in Ilwaco

Oct 28, 2025

Facet planners said state rules will require cities to allow up to two accessory dwelling units per qualifying lot and offer model codes for middle housing types; they advised mapping critical areas and reviewing development regulations to estimate potential ADU capacity.

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Matt Covert explained state ADU and middle‑housing requirements and why Ilwaco will need code changes. "The state law that required cities to change rules to allow up to 2 ADUs per lot where single family homes are allowed... this requirement does not apply on lands where critical areas are present," he said, urging the city to map known critical areas to estimate potential ADU capacity.

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