HB 2304 — Increasing the supply of condominiums by expanding the types of condominium buildings that may be subject to an express warranty of quality and express warranty insurance coverage

Widens the implied-warranty opt-out in RCW 64.90.675: a declarant of a small condominium building may substitute an insurance-backed express warranty (1-year workmanship and materials, 2-year plumbing/electrical/ductwork, 10-year structural to load-bearing members) for the implied warranties of quality. Eligibility expanded from buildings of 12 or fewer units and two or fewer stories to four or fewer stories. Passed the House 94-0 and the Senate 47-0; signed March 9, 2026.