[Amended 8-14-1979 by Ord. No. 97; 10-11-1983 by Ord. No. 114; 6-12-1984 by Ord. No. 116; 4-12-2011 by L.L. No. 1-2011; 4-12-2011 by L.L. No. 4-2011; 4-12-2011 by L.L. No. 5-2011]
The Town of Ossining is hereby divided into the classes of districts listed below:
Symbol
Title
R-40
One-Family Residence District
R-30
One-Family Residence District
R-20
One-Family Residence District
R-20A
One-Family Residence District
R-15
One-Family Residence District
R-10
One-Family Residence District
R-7.5
One-Family Residence District
R-5
One-Family Residence District
MF
Multifamily District
MF-I
Multifamily-Inn District
NC
Neighborhood Commercial District
GB
General Business District
GB-1
General Business District-1
O-RB
Office-Research Business District
O-RE
Office-Research Education District
BE
Business Education District
[Amended 9-16-1969 by Ord. No. 73]
The boundaries of the said districts are hereby established as shown on the Zoning Map, Town of Ossining, as published in the Citizen Register, the official newspaper of the Town of Ossining, on February 3, 1969, which accompanies and which, with all explanatory matter thereon, is hereby adopted and made a part of this chapter. A copy of said map, indicating the latest amendments, shall be kept up-to-date in the offices of the Town Clerk for the use and benefit of the public.[1]
[1]
Editor's Note: The Zoning Map appears in a pocket part at the end of this volume.
In determining the boundaries of districts shown on the map, the following rules shall apply:
A. 
Where district boundaries are indicated as approximately following the center lines of streets, highways, waterways or railroad rights-of-way or such lines extended, such center lines shall be construed to be such boundaries.
B. 
Where such boundaries are indicated as approximately following the property lines of parks or other publicly owned lands, such lines shall be construed to be such boundaries.
C. 
Unless otherwise shown, all district boundaries running parallel to streets shall be construed to be 200 feet back from the rights-of-way of said streets.
D. 
In all cases where a district boundary divides a lot in one ownership and more than 50% of the area of such lot lies in the less restricted district, the regulations prescribed by this chapter for the less restricted district shall apply to such portion of the more restricted portion of said lot which lies within 30 feet of such district boundary. For purposes of this section, the more restricted district shall be deemed that district subject to regulations which prohibit the use intended to be made of said lot or require higher standards with respect to coverage, yards, screening, landscaping and similar requirements.
E. 
In all cases where a district boundary line is located not farther than 15 feet away from a lot line of record, such boundary line shall be construed to coincide with such lot line.
F. 
In all other cases where dimensions are not shown on the map, the location of boundaries shown on the map shall be determined by the use of the scale appearing thereon.
Following the effective date of this chapter:
A. 
No building shall be erected, moved, altered, rebuilt or enlarged, nor shall any land or building be used, designed or arranged to be used, for any purpose or in any manner except in conformity with all regulations, requirements and restrictions specified in this chapter for the district in which such building or land is located.
B. 
No yard or open space required in connection with any building or use shall be considered as providing a required open space for any other building on the same or any other lot.
C. 
No lot shall be formed from part of a lot already occupied by a building unless such building, all yards and open spaces connected therewith and the remaining lot comply with all requirements prescribed by this chapter for the district in which said lot is located. No building permit shall be issued for the erection of a building on any new lot thus created unless such building and lot comply with all the provisions of this chapter.
D. 
Nothing contained in this chapter shall require any change in the plans, construction or designated use of a building complying with local laws in force prior to this chapter, if at least one of the following is found to exist:
[Amended 9-16-1969 by Ord. No. 73; 8-13-1985 by Ord. No. 120]
(1) 
A building permit or certificate of occupancy shall have been duly issued prior to the date of first publication of notice of the public hearing on this chapter.
(2) 
The entire building shall have been completed in accordance with such plans as have been filed with the Town within one year from the effective date of this chapter.
(3) 
The site development plans were approved pursuant to Article VI, Designated Multiple-Use Development, prior to its deletion from this chapter.
E. 
Any use not permitted by this chapter shall be deemed to be prohibited. Any list of prohibited uses contained in any section of this chapter shall not be deemed to be an exhaustive list but has been included for the purposes of clarity and emphasis and to illustrate, by example, some of the uses frequently proposed that are deemed undesirable and incompatible and are thus prohibited.
F. 
Every proposed lot shall contain a suitable site for a principal building and associated improvements.
[Added 12-15-2015 by L.L. No. 9-2015]
(1) 
With respect to a conventional subdivision layout, at least 75% of the minimum lot area requirement of a proposed lot shall consist of neither "wetland" nor "extremely steep slope" as these terms are defined in Chapter 105, Freshwater Wetlands, Watercourses and Water Body Protection, and Chapter 167, Steep Slope Protection, respectively, of the Town Code. For example, in an R-40 Zoning District, at least 30,000 square feet (75% of 40,000 square feet) of the proposed lot shall consist of neither "wetland" nor "extremely steep slope."
(2) 
With respect to a cluster development layout, the Planning Board shall strive to achieve the seventy-five-percent standard in Subsection F(1) immediately above, but the Board shall have latitude with respect to the degree to which building sites and lots may contain "wetland" and/or "extremely steep slope," in the furtherance of fulfilling one or more of the purposes of cluster development set forth in § 200-31A of this chapter, to wit to enable and encourage flexibility of design and development of land in such a manner as to promote the most appropriate use of land, to facilitate the adequate and economical provision of streets and utilities, to preserve the natural and scenic qualities of open lands, to protect areas of meaningful ecological value and to reserve suitable lands for park and recreation purposes, as well as to assist in the provision of below-market-rate housing pursuant to § 200-34C of this chapter.