Light trespass, where outdoor lighting from one property creates unwanted illumination on neighboring properties, is addressed through Oak Lawn's zoning and nuisance codes. Residents can request Code Enforcement investigation of persistent light trespass from neighboring properties.
Light trespass occurs when outdoor lighting from one property illuminates another property beyond incidental levels. Oak Lawn addresses light trespass through general nuisance provisions and specific lighting requirements in the zoning code. Common sources include misaimed floodlights, unshielded decorative fixtures, commercial parking lot lighting adjacent to residential, and overly bright house lighting. Enforcement typically begins with neighbor communication, as many issues are easily resolved by reaiming fixtures or adding shields. If informal resolution fails, Code Enforcement investigates by observing light levels at the affected property. Measurements may be taken to establish illumination levels. Corrective actions include installing full-cutoff shields, lowering mounting heights, using lower-wattage bulbs, adding motion sensors, or changing fixture types. Commercial properties bordering residential face additional scrutiny. Residents experiencing light trespass should document the issue with photos (including time-stamped) and specific source identification. Landlord-tenant issues may involve HOA or condo association rules in addition to Village codes.
Persistent light trespass after notice may result in fines from $75-200 per day. Corrections required may include fixture replacement, which is typically a one-time cost to remedy the nuisance.
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