Dark Sky Rules: Oak Park vs Tinley Park
How do dark sky rules rules compare between Oak Park, IL and Tinley Park, IL?
Oak Park and Tinley Park have similar restriction levels.
Oak Park, IL
Cook County
Oak Park regulates outdoor lighting to minimize light pollution and glare in residential neighborhoods. The village's zoning ordinance requires outdoor lighting fixtures to be directed downward and shielded to prevent light trespass onto adjacent properties. Commercial properties face additional lighting standards. Full cutoff fixtures are encouraged.
View full Oak Park rules →Tinley Park, IL
Cook County
Tinley Park does not have a comprehensive dark-sky ordinance but regulates outdoor lighting through general nuisance, light trespass, and commercial site lighting standards. Residential lighting that spills onto neighboring properties may be addressed under nuisance provisions. Commercial developments are subject to zoning-based lighting standards requiring full-cutoff fixtures and lumens limits.
View full Tinley Park rules →Key Facts Comparison
| Fact | Oak Park | Tinley Park |
|---|---|---|
| Shielding Required | Downward-directed fixtures | - |
| Full Cutoff | Encouraged for all installations | - |
| Light Trespass | Prohibited at property line | - |
| Commercial Standards | Max foot-candles at property line | - |
| Code Enforcement | (708) 358-5440 | - |
| Dark-Sky Ordinance | - | None comprehensive |
| Commercial Standard | - | Full-cutoff fixtures |
| Residential Property Line | - | 0.5 fc max typical |
| Commercial Property Line | - | 1.0 fc max typical |
| Photometric Plans | - | Required commercial |
Highlighted rows indicate differences between cities.
Oak Park FAQ
Does Oak Park have dark sky lighting rules?
While Oak Park does not have a standalone dark sky ordinance, its zoning and building codes require outdoor lighting to be directed downward and shielded to prevent light trespass and glare onto neighboring properties.
Can my neighbor's flood light shine into my yard?
No. Outdoor lighting must be positioned and shielded to avoid illuminating adjacent properties. You can file a complaint with Code Enforcement at (708) 358-5440 if a neighbor's lighting causes light trespass.
What type of outdoor fixtures does Oak Park recommend?
Full cutoff fixtures that eliminate upward light emission are encouraged. All outdoor lighting should be directed downward and shielded so the light source is not visible from neighboring properties.
Tinley Park FAQ
Does Tinley Park have a dark-sky ordinance?
Not a comprehensive one. Commercial lighting has full-cutoff and photometric standards, but residential lighting is addressed through general nuisance and light trespass principles.
How bright can commercial property lighting be?
Photometric plans typically must show that light levels at residential property lines do not exceed 0.5 foot-candles and at commercial property lines do not exceed 1.0 foot-candle. Fixtures must be full-cutoff.
Can I stargaze in Tinley Park?
Urban light pollution makes dark-sky viewing difficult within Tinley Park. Driving to rural areas outside the metro, such as near Kankakee, provides better sky darkness for astronomy.
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