Cowlitz CountySubdivisions are any division or re-division of land for the purpose of sale, lease or transfer of ownership. Any time a property owner wants to create additional lots from a single lot, a subdivision will likely be required.

Subdivisions in Cowlitz County can be grouped into two categories: administrative subdivisions and subdivisions requiring public hearing. Administrative subdivisions do not require public hearings and are administered by County staff. The project is reviewed for conformance with relevant County Codes. Administrative subdivisions include Short Subdivisions and Large Lot Subdivisions.

Subdivisions requiring public hearing are analyzed for conformance with County Codes by County staff. Staff provide recommendations to the Board of County Commissioners for their review and decision during a public hearing. Subdivisions requiring a public hearing include Rural Subdivisions, Urban Subdivisions and Planned Unit Developments.