PDFWAC 51-51-2904
Section 2904—Dwelling unit fire-sprinkler systems.
P2904.1.1 Required sprinkler locations. Sprinklers shall be installed to protect all areas of a dwelling unit.
EXCEPTIONS: | 1. Uninhabitable attics, crawl spaces and normally unoccupied concealed spaces that do not contain fuel-fired appliances do not require sprinklers. In uninhabitable attics, crawl spaces and normally unoccupied concealed spaces that contain fuel-fired equipment, a sprinkler shall be installed above the equipment; however, sprinklers shall not be required in the remainder of the space. |
2. Clothes closets, linen closets and pantries not exceeding 24 square feet (2.2 m2) in area, with the smallest dimension not greater than 3 feet (915 mm) and having wall and ceiling surfaces of gypsum board. | |
3. Bathrooms not more than 55 square feet (5.1 m2) in area. | |
4. Garages; carports; exterior porches; unheated entry areas, such as mud rooms, that are adjacent to an exterior door; and similar areas. |