Mason County, WA Right to Farm: Farm Nuisance Protection (2026)

Mason County's right-to-farm and right-to-forestry protection sits inside the county's Resource Ordinance, Chapter 8.52 of the Mason County Code, at Section 8.52.040(c)(5), titled "Preferential Right to Manage Resources." It shields farming, forestry and mining operations across unincorporated Mason County, not just land formally designated as agricultural or forest resource land. Subsection (A) is the core nuisance shield: once a resource operation has run for more than five years in a locality without being a nuisance, later changes in the surrounding neighborhood, such as new residential development, cannot turn it into a private or public nuisance, unless the harm comes from the operator's own negligent or improper conduct.

Subsection (B) broadens the protection further by saying an operation cannot be found a nuisance at all if it follows local, state and federal law and best management practices, regardless of how long it has operated. Subsection (C) protects timing: a farm or forest operation cannot be restricted to particular hours of the day or days of the week, so long as it follows state-mandated best management practices. Subsection (D) directs that farm and forest operations be kept free from excessive or arbitrary regulation. The Board of County Commissioners extended these same protections to non-designated agricultural and forest lands enrolled in the state's open-space or forest property tax programs under MCC 8.52.080(c), and to lands formally classified as agricultural resource lands under MCC 8.52.061(5)(A), so the shield reaches working farms throughout the unincorporated county, not only mapped resource zones. Community Development administers the designation and notice process that accompanies the protection.