Oak Lawn does not have formal dark-sky designation but its zoning code typically requires outdoor lighting to be shielded and directed downward, preventing light trespass onto neighboring properties and glare toward streets. Commercial and parking area lighting face more stringent requirements than residential.
Oak Lawn regulates outdoor lighting primarily to prevent nuisance light trespass and glare rather than for full dark-sky astronomical purposes. Residential lighting should be designed so light falls on the property where intended and not directly onto neighboring windows or yards. Full-cutoff (fully shielded) fixtures are encouraged and often required for larger installations. Commercial parking area lighting is subject to maximum foot-candle levels at property lines and typically maximum mounting heights. Floodlights aimed upward or outward across property lines are a common source of complaints. Motion-activated security lighting that stays on briefly is generally preferable to continuous floodlights. String lights and seasonal decorative lighting are allowed. Outdoor lighting in zero-ambient areas (park facilities, cemeteries) may be specifically regulated. Light pollution is a growing concern; fixtures meeting IDA (International Dark-Sky Association) approval are a good choice. Oak Lawn's Zoning Administrator reviews lighting plans for commercial projects.
Light trespass complaints are typically investigated by Code Enforcement. Corrections may include installing shields, reaiming fixtures, or replacing with cutoff fixtures. Fines may apply for continued violations after notice.
Oak Lawn, IL
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Oak Lawn, IL
Oak Lawn regulates residential driveways through its zoning and building codes. Driveways must be paved with concrete, asphalt, brick, or approved pavers, me...
Oak Lawn, IL
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Oak Lawn, IL
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Oak Lawn, IL
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Oak Lawn, IL
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Side-by-side rule comparisons with other cities in Cook County.
See how other cities in Cook County handle dark sky rules.
See how Oak Lawn's dark sky rules rules stack up against other locations.
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