Outdoor Lighting in Mason County, WA (2026)
2 rules for unincorporated Mason County, Washington.
Verified from official government sources
Dark Sky Rules
In the Belfair Urban Growth Area, Mason County requires commercial and multi-family outdoor lighting to be directed downward with cutoff shields that prevent spillover into residential areas, caps freestanding fixtures at sixteen feet, and bans mercury vapor light fixtures outright under Mason County Code § 17.32.030.
Belfair UGA Outdoor Lighting Standards, Mason County
Some RestrictionsMason County Code § 17.32.030
The following standards apply to all commercial and multi family development unless otherwise noted. ... (3)Direct lighting downward to the intended area to be lighted. All exterior lighting fixtures should incorporate cutoff shields to prevent spillover into residential areas. Broadcast lighting fixtures that project lighting outward rather than downward are discouraged. Outdoor lighting shoul...
Billboard Lighting
Within Mason County's shoreline jurisdiction, illuminated signs and billboards must be hooded, shaded, or aimed so they don't glare onto neighboring properties or the water, under Mason County Code § 17.50.245(b)(3), and overwater or piling-mounted signs are banned outright except for navigation, informational, or water-dependent uses.
Mason County Shoreline Sign Lighting Rules
Some RestrictionsMason County Code § 17.50.245
(b)Outdoor Advertising, Signs, and Billboard Regulations.(1)Signs shall comply with the county sign code that applies county-wide (MCC 17.03.200-203 and MCC 17.05.025), specific to Belfair (MCC 17.34), and specific to Allyn (MCC 17.15).(2)All signs shall be located and designed to minimize interference with vistas, viewpoints, and visual access to the shoreline.(3)Illuminated signs shall be hoo...
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