PDFWAC 388-97-3080
Natural or artificial light.
(1) The nursing home must ensure that adequate natural or artificial light for inside illumination is provided in every useable room area, including but not limited to storerooms, attic and basement rooms, hallways, stairways, inclines, and ramps.
(2) In new buildings and additions, the nursing home must utilize:
(a) Windows and skylights to minimize the need for artificial light and to allow a resident to experience the natural daylight cycle; and
(b) Windows and skylights near entrances/exits in order to avoid difficulty in adjusting to light levels when entering or leaving the facility.