The bill aims to enhance housing options in Washington State by permitting the administrative splitting of existing residential lots into new residential lots. This initiative is designed to provide homeowners with greater flexibility in maintaining homeownership and to create affordable housing opportunities, particularly for first-time buyers. It requires cities that plan under the Growth Management Act to develop regulations that facilitate this lot split process, which can be integrated with the review of residential building permits. The bill sets forth specific conditions for lot split approval, including minimum lot size requirements, the need for certificates of availability from sewer and water providers, and a displacement mitigation strategy if existing housing is impacted.

Additionally, the bill amends existing law to ensure cities adhere to minimum density requirements and allows for the development of multiple units on residential lots based on population size. It prohibits cities from imposing limits on the total number of dwelling units below what is permitted by the underlying zoning prior to the lot split. The legislation also provides immunity for cities from liability related to lot split approvals and states that any ordinances adopted under this section are not subject to administrative or judicial appeal. Furthermore, it includes a provision that the act will become null and void if specific funding is not secured by June 30, 2025, ensuring that the bill's implementation is contingent upon obtaining necessary financial resources.

Statutes affected:
Engrossed Second Substitute: 36.70A.635