US lawWashingtonRegulationsTitle 51 — ENTERPRISE SERVICES, DEPARTMENT OF (BUILDING CODE COUNCIL)Chapter 51-51 — STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE 2021 EDITION OF THE INTERNATIONAL RESIDENTIAL CODE51-51-0325WAC 51-51-0325WAC 51-51-0325. Section R325 — MezzaninesLast amended: 2020Year: 2026Length: 17 wordsOfficial source R325.1 General. Mezzanines shall comply with Sections R325 through R325.5. Habitable attics shall comply with Section R326.PreviousWAC 51-51-0315NextWAC 51-51-0326