[Amended 10-14-1969; 8-1-1972; 8-29-1989; 9-11-2001]
For the purpose of this chapter, the Town of Islip, outside the limits of incorporated villages, is hereby divided into use districts, which shall be classified in rank from highest to lowest as follows:
A. 
Planned Landmark Preservation District (PLP).
B. 
Planned Development District (PDD).
C. 
Ocean Front Dune District (AAAB).
D. 
Residence BAA District (BAA).
E. 
Residence AAA District (AAA).
F. 
Residence AA District (AA).
G. 
Residence A District (A).
H. 
Residence B District (B).
I. 
Residence CAA District (CAA).
J. 
Residence C District (C).
K. 
Residence CA District (CA).
L. 
Residential Redevelopment District (RRD).
M. 
General Service F District (GSF).
N. 
General Service Transitional District (GST).
O. 
General Service C District (GSC).
P. 
General Service D District (GSD).
Q. 
General Service E District (GSE).
R. 
Downtown Development District (DDD).
S. 
Business District (BD).
T. 
Business 1 District (B1).
U. 
Business 2 District (B2).
V. 
Industrial Corridor District (ICD).
[Amended 7-20-2021]
W. 
Business 3 District (B3).
[Amended 7-20-2021]
X. 
(Reserved)[1]
[1]
Editor's Note: Former Subsection X, which listed Industrial 1 District (Ind. 1), was repealed 9-15-2020.
Y. 
Industrial 1 District (Ind. 1).
[Amended 9-15-2020]
Z. 
Industrial Business District (IBD).
[Amended 9-15-2020]
AA. 
Industrial Transition District (ITD).
[Amended 9-15-2020]
BB. 
Industrial 2 District (IND 2).
[Added 9-15-2020]
A. 
The boundaries of the use districts shall be as shown upon the map and every section thereof attached to and made a part of this chapter entitled "Town of Islip, Suffolk County, New York, Amended Zoning Map."[1]
[1]
Editor's Note: The Zoning Map is on file in the office of the Department of Building and Engineering.
B. 
The boundaries between use districts are, unless otherwise indicated, either along the boundary lines of various properties and lots or the center lines of streets or railroad rights-of-way or such lines extended or lines parallel thereto. Where figures are shown on the Zoning Map between a street line and a district boundary line, they indicate the distance therefrom equivalent to the number of feet so indicated. When the location of a use district boundary line is not otherwise determined, it shall be determined by the scale of the map measured from a given line; where the street layout actually on the ground varies from the street layouts as shown on the Zoning Map, the designations shown on the mapped street shall be applied in such a way as to carry out the intent and purpose of this ordinance for the particular area in question. Lands lying under water shall be considered as being in the same district as the abutting upland, for a distance of 100 feet from said upland, unless specifically classified and designated otherwise. When property is located in two different zones, it must meet the higher zoning classification, except in those cases where the higher zoning classification of the parcel consists of 10% or less of its overall area.
[Amended 3-14-2023]
C. 
Interpretation of district boundaries. With respect to the boundaries of any of the zoning districts as shown on the Official Map, the Commissioner of Planning or his designee shall be authorized to interpret the actual geographic extent of any zoning district only in those instances where:
[Added 5-28-2008]
(1) 
Errors or discrepancies in geographic accuracy occur which are inherent in legacy mapping and/or survey techniques; or
(2) 
No supporting documentation clearly expresses an empirical measurement from a known or discoverable benchmark; or
(3) 
The spirit and intent of this ordinance is not compromised.