Section 410.430 - Natural Light and Obstructions(A) The owner shall provide transparent or translucent glass which admits unobstructed light from the outdoors equal in area to a minimum 8% of the entire floor area in: (1) Habitable rooms other than a kitchen.(2) Kitchens which have a floor area greater than 70 square feet.(B) If any light obstructing structure is located less than three feet from the outside of and extends to a level above the lower level of the transparent or translucent glass, that portion so obstructed shall not be included as contributing to the required minimum total glass area.Amended by Mass Register Issue 1495, eff. 5/12/2023.Amended by Mass Register Issue 1497, eff. 5/12/2023.