Grays Harbor County, WA Cannabis Regulations: Dispensary Zoning (2026)

Section 17.60.210 sets conditional-use standards for a 'new cannabis processing and/or production facility' rather than banning the use. New facilities must operate inside fully secure indoor structures with non-membrane walls and roofs, and structures specifically exempted by WAC 51-50-007 cannot be used for cannabis processing or production. Every structure must have air filtration and ventilation systems designed by a licensed mechanical engineer and maintained per that engineer's requirements, and the filtration and ventilation must follow best practices and mitigation measures recommended for cannabis facilities by the Olympic Region Clean Air Agency.

A conditional use permit under this section is valid for one year; the county issues an annual renewal only if the applicant provides new documentation from a licensed mechanical engineer confirming the standards are still met, and the renewal fee is set by the county's current fee schedule. Facilities already operating and licensed by the Washington State Liquor and Cannabis Board, and permitted by the county, as of the ordinance's effective date (adopted by Ord. No. 482, § 17, March 14, 2023) are treated as legal nonconforming uses.

Such an existing facility may expand onto a contiguous parcel only after recording a boundary line adjustment under Title 16, provided the combined parcel does not grow in size and cannabis use is not extended onto the added land as a second, separate facility. The section addresses processing and production only; it does not set separate zoning standards for cannabis retail stores.