§ 120-29. Multiple-family dwellings.

A. 

Multiple-family dwellings existing in the Residential District at the time of the adoption of this chapter may retain their special permit status and remain as a special permit use subject to the following provisions. New multiple-family dwellings are prohibited in the Residential District, except as specifically permitted in this chapter,

B. 

Alteration or addition. With special permit approval and subject to the following provisions, multiple-family dwellings may be replaced, enlarged, extended or moved and may increase their density.

(1) 

All building and zoning permit applications for the alteration of a multiple-family dwelling shall be subject to special permit and site plan approval.

(2) 

Multiple-family dwelling structures may be enlarged, extended or moved, in whole or in part, beyond the area occupied by such use at the time of adoption of this chapter, to an area on the same lot.

(3) 

Multiple-family dwellings may increase their density and add up to 10% of the number of dwelling units. Only preexisting multiple-family dwellings with 10 or more units qualify for this increase in density. When calculating such an increase, quantities of 1/2 or more shall equal a full dwelling unit.

(4) 

Multiple-family dwellings may not expand onto any additional lot not currently containing a multiple-family dwelling, nor may any other lot be merged with a lot containing a multiple-family dwelling.

(5) 

When a multiple-family dwelling is added to or enlarged in any manner, the building and structures shall conform to Table 2, Dimensional Table of Yard, Area, Setback and Height Requirements, § 120-8, and shall conform to the purposes, principles and provisions of the Residential District.

C. 

If a multiple-family dwelling is hereafter destroyed by fire, wind, explosion, structural failure or other natural cause, it may be repaired or rebuilt, subject to special permit as granted by the Planning Board.

D. 

If a multiple-family dwelling is discontinued for a period of 18 consecutive months, it shall not be renewed, and any subsequent use on that lot shall be subject to review by the Planning and Zoning Boards, as applicable.