PIERCE COUNTY NOTICE OF DETERMINATION OF NONSIGNIFICANCE ADOPTION OF EXISTING DOCUMENT Cottage Housing Development Regulations Proponent: Pierce County Planning and Public Works Application: 1068229 Notice is hereby provided in accordance with WAC 197-11 that Pierce County has issued a Determination of Nonsignificance (DNS) on the following proposal: Cottage Housing is a residential use type that allows for multiple single-family structures to be built within a single plot or tract of land with conditions limiting the size of individual units and requires some centralized amenities provided for residents of the property. This update will create regulations to allow for cottage housing developments and create general guidelines for universal design features in residential uses. This project implements the Pierce County 2024 Comprehensive Plan Update by meeting Land Use and Housing Element policy directives and State Law mandates for providing housing to all income levels and increasing housing flexibility in the urban area. Pierce County, acting as lead agency, has determined that the proposal will not result in significant adverse impacts on the environment. An Environmental Impact Statement (EIS) will not be required. This decision was made after the review of a completed environmental checklist and other information on file. This information is available to the public on request. This DNS is issued under WAC 197-11-340. Pierce County may not act on this proposal prior to April 13, 2026. Comments must be submitted by close of business on April 10, 2026. The Responsible Official has issued this Determination of Nonsignificance for a nonproject action, which may be appealed under the State Environmental Policy Act (SEPA). RCW 43.21C.075. In some cases, the SEPA appeal must be combined with any appeal of the underlying governmental action pursuant to RCW 43.21C.075(2)(a). SEPA appeals associated with legislative actions taken by the Pierce County Council pursuant to the requirements of the Growth Management Act or Shoreline Management Act must be appealed to the Growth Management Hearings Board. PCC 1.22.080.B.1.k and RCW 36.70A.280(1)(a). The appeal must be filed with the Growth Management Hearings Board within 60 days following publication in the County paper of record for the underlying governmental action pursuant to RCW 36.70.290(2) and WAC 242-03-200. Review Practicing Before the Growth Management Hearings Board Handbook for additional information on the appeal process. IPL0326609 Mar 31 2026