2 county-level rules, plus city-specific rules for 3 cities in Allegheny County, Pennsylvania.
Verified from official government sources
Allegheny County has no countywide dark-sky ordinance but many municipalities require shielded fixtures in new development. Pittsburgh Zoning §915.03 mandates full cutoff lighting for commercial and multifamily.
Light trespass across property lines in Allegheny County handled through municipal lighting ordinances and common-law nuisance. Pittsburgh limits spillover to 0.5 footcandles at residential property lines.
3 cities in Allegheny County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Allegheny County — parking, noise, fences, fires, animals, pools, and more.
Allegheny County Ordinance Hub →