Outdoor Lighting in Allegheny County, PA (2026)
3 county-level rules, plus city-specific rules for 2 cities in Allegheny County, Pennsylvania.
Verified from official government sources
Dark Sky Rules
New subdivisions and land developments in Allegheny County must use IESNA full-cutoff fixtures aimed straight down over parking lots, walkways and other horizontal surfaces to cut sky glow.
Allegheny County Full Cutoff Lighting Standard
Some RestrictionsAllegheny County Code § 780-522.A(1)
For horizontal surfaces (parking lots, merchandising and storage areas, fuel-dispensing facilities, auto sales areas, loading docks, passive recreation, bicycle and pedestrian trails, sidewalks and building entrances), fixtures shall be aimed straight down and shall meet IESNA full cutoff criteria. Fixtures with aggregate output not exceeding 500 lumens (equivalent to a forty-watt incandescent ...
Light Trespass & Shielding
Allegheny County's subdivision code requires all outdoor lighting in new developments to be aimed and shielded so it never creates a nuisance by projecting objectionable light onto neighboring properties.
Allegheny County Outdoor Lighting Nuisance Rule
Some RestrictionsAllegheny County Code § 780-522.B(1)
All lighting shall be aimed so as not to present a hazard to drivers or pedestrians or create a nuisance by projecting or reflecting objectionable light onto neighboring uses or properties. (2) Directional fixtures shall be shielded, installed and aimed so they do not project output past the object being illuminated into windows of neighboring uses, skyward or onto a public roadway or pedest...
Billboard Lighting
Externally lit billboards and signs reviewed under Allegheny County's subdivision code must be top-mounted, downward-aimed and capped at 30 vertical footcandles of illumination.
Allegheny County Billboard Lighting Footcandle Cap
Some RestrictionsAllegheny County Code § 780-522.B(7)
Unless otherwise governed by local zoning, externally illuminated billboards and signs shall be lighted by fixtures mounted at the top of the billboard or sign and aimed downward. The fixtures shall be designed, shielded and aimed to shield the source from off-site view and to restrict the light output beyond the sign or billboard. At no point on the face of the sign or billboard shall the illu...
Outdoor Lighting by City in Allegheny County
2 cities in Allegheny County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
All Allegheny County ordinances
See every category we cover for Allegheny County: parking, noise, fences, fires, animals, pools, and more.
Allegheny County Ordinance Hub →