A. 
Each building or structure hereafter erected or altered shall be located on a lot, as defined in § 121-5.
B. 
In no case shall there be more than one principal use or one main building and its accessory building or buildings on one lot.
No lot or parcel of land in single, separate ownership and of record on the effective date of this chapter shall be reduced in any manner below the minimum lot size required by this chapter.
In case a substandard lot, as defined herein, unimproved and in bona fide single, separate ownership on the effective date of this chapter, or of an amendment thereto imposing enlarged area, the date of application for a building permit, has an area or width less than that prescribed by these regulations, a building may be erected thereon, subject to a variance being granted by the Board of Appeals in accordance with the regulations herein, provided that the building shall comply with all provisions of these regulations other than such area requirements. Where, at the time or times hereinbefore set forth, the owner of such lot owns or has an enforceable right to acquire other lots or parcels contiguous to the lot for which such building permit is applied, such other lots or parcels, or so much thereof as may be necessary to create conformity with the then existing area, width or yard restrictions (without, however, creating any other nonconformity), shall be combined with the original lot or parcel, whereupon a permit may be issued, but only for such combined lot or parcel.
[1]
Editor's Note: See also § 121-45.
A. 
No yard shall be diminished and maintained smaller than prescribed by this chapter.
B. 
Every part of a required yard shall be open and substantially unobstructed to the sky, except as may be otherwise specified by this chapter.
No land required for yards or lot area per dwelling unit for existing buildings or which hereafter is provided for any building or dwelling unit, in order to comply with the provisions of this chapter, shall be considered as a yard or lot area per dwelling unit for any other building; nor shall any yard or lot area per dwelling unit on an adjoining lot be considered as providing such yard, open space or lot area per dwelling unit on a lot upon which a building is to be erected.
A. 
The following projections into yards or courts may be permitted, provided that the maximum projection specified hereinbelow shall not be exceeded:
(1) 
Cornices, eaves, gutters and chimneys may project not more than 18 inches.
(2) 
Belt courses, sills, stormwater leaders and similar ornamental or structural features may project not more than one foot.
(3) 
Awnings serving a door or window may project not to exceed five feet.
B. 
Except as otherwise specifically provided by these regulations, no building or structure or part thereof shall extend or project into a yard required by this chapter. However, nothing herein shall be construed to prevent the construction and maintenance of access driveways, garden walks, open terraces or patios and similar accessory or appurtenant facilities or of accessory subterranean facilities, such as a private sanitary system or air raid shelter, in a yard.
C. 
A swimming pool may be constructed in a required yard (except in a front yard) provided that:
[Amended 1-8-1974]
(1) 
No part of such pool shall be nearer than 25 feet to the property line.
(2) 
Within such 25 feet, there be screening and landscaping sufficient to screen such pool from adjacent property.
(3) 
No bathhouse or other outbuilding be constructed within 25 feet of any property line.
[1]
Editor's Note: For provisions relating to swimming pools, see Ch. 99.