Sign Regulations in Islip, NY (2026)
3 verified sign regulations for Islip, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Holiday Displays
The Town of Islip's exterior lighting ordinance exempts holiday lighting from its glare, shielding and cutoff standards, but only between October 15 and January 15 of the following year. Outside that window, decorative string lights, illuminated menorahs, nativity scenes and yard displays must meet the same full-cutoff and light-trespass rules as any other fixture.
Islip Holiday Lighting Exempt Oct. 15–Jan. 15
Light RestrictionsCode of the Town of Islip § 68-684
B. ... (4) Nonessential lighting can be ordered extinguished, including mobile or ground-mounted searchlights, laser light shows, or decorative flashing, blinking or tracing lights, exclusive of exempt holiday lighting. C. Exceptions. ... (3) Holiday exterior lighting lit between October 15 and January 15 of the following year.
Digital Billboards
Islip's sign ordinance bans commercial billboards outright, any sign rented to advertise a product or business other than the one on the property where it stands, and separately prohibits flashing, revolving or animated signs of any kind, digital or otherwise, except signs that display only time and temperature.
Islip Bans Off-Premise Billboards and Flashing Signs
Heavy RestrictionsCode of the Town of Islip § 68-396
Any sign not specifically permitted is prohibited and shall be removed. Prohibited signs include but are not limited to the following: ... E. Flashing, revolving, moving, sound-producing or animated signs, including signs which have the capability of motion in whole or in part, except signs which display time and/or temperature exclusively. ... G. Commercial billboard which is rented or used to...
Window Signs
Within the Bayport Overlay District along Montauk Highway, Code of the Town of Islip § 68-759C caps window signs at no more than 25% of the total window area, layered on top of the townwide Sign Ordinance in Article XXIX that Bayport businesses must otherwise follow.
Islip Bayport Overlay Caps Window Signs at 25%
Some RestrictionsCode of the Town of Islip § 68-759(C)
§ 68-759. Signage. With the exception of the following, all provisions of the Sign Ordinance shall be complied with... C. Window signs, may not occupy an area greater than 25% of the total area of the window.
Looking for Suffolk County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Islip city rules.
Sign Regulations in Suffolk County →