Islip, NY Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Lighting curfew
- Close of business or 10:00 p.m.
- Covers
- Billboards, ground/wall/roof/moving signs
- Moving electric signs
- Also banned after curfew, § 11-4(B)
- First-offense fine
- Up to $250
- Repeat-offense fine
- Up to $500 per violation
Summary
Islip's Conservation of Energy ordinance bars lighting up any sign, billboard or outdoor display after the close of business or 10:00 p.m., whichever is later. Town Code § 11-4 also stops moving electric signs and most outdoor-area lighting after that same cutoff.
It shall be unlawful for any person to cause, allow or permit the illumination or lighting of any sign after the close of business or 10:00 p.m., whichever is later.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4826765; v112 updated 2026-02-24; through 02-24-2026).
Full Breakdown
Chapter 11, adopted in 1974 as the Conservation of Energy Ordinance, defines 'sign' broadly at § 11-3 to include 'every sign, billboard, ground sign, wall sign, roof sign, illuminated sign, projecting sign, moving sign, temporary sign, marquee, awning and canopy' displayed outdoors where the public can see it: excluding only outdoor clocks and temperature indicators. floor for others. cutoff, and § 11-4(C) extends the curfew to walkway, parking lot and outdoor storage-area lighting, with an exception for lighting needed for public safety or to safeguard property in legally permitted outdoor storage areas. The ordinance applies Town-wide to every commercial, retail, office and industrial 'establishment' as defined in § 11-3, including billboard-style ground and roof signs.
Violations & Fines
Illuminating a sign, billboard or other outdoor display after close of business or 10:00 p.m. violates § 11-4(A). Section 11-5 sets the penalty at up to $250 for a first violation and up to $500 for each succeeding violation, with each day a violation continues charged as a separate offense.
Frequently Asked Questions
How late can an illuminated billboard stay lit in Islip?
Does Islip's sign-lighting curfew cover parking lot lights too?
What's the fine for leaving an illuminated sign on too late?
Sources & Official References
Other rules in Islip
New York rules heatmap·Compare Islip to another location·View the New York outdoor lighting overview
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Billboard Lighting in Nearby Cities
How other cities in Suffolk County handle billboard lighting.