The purpose of these density control provisions is in order to provide adequate open spaces for access of light and circulation of air, to facilitate the prevention and fighting of fires, to prevent undue concentration of population and to lessen congestion on streets.

No building or premises shall be erected, altered or used except in accordance with the standards set forth in this article.

The following projections into required yards may be permitted:

Any open or enclosed porch or carport shall be considered part of the building in the determination of size of the required yard or lot coverage.

Buildings. Accessory buildings, to the principal building, shall be located in the rear yard and shall be located no closer than 12 feet or a distance equal to the height of such accessory building, whichever is greater, to any building on the adjoining lot and to the principal building on the same lot.

Pools and tennis courts. In a residential district, swimming pools and tennis courts shall be erected only on the same lot as the principal structure; may not be constructed in the side or front yards of such lot: shall be distant not less than 10 feet from any lot line nor less than 10 feet from the principal structure: and shall not adversely affect the character of any residential neighborhood by reason of noise or glare or safety.

In all districts where residences are permitted, a large lot held in a single ownership may be improved and divided for residential use according to the minimum lot size per family and bulk regulations for each district as set forth in the Density Control Schedule,[1] provided that there shall be no more than one principal building and use on each resulting lot. If two or more principal residential structures are located on the same large lot, the minimum average density requirement must be complied with.

A residential lot of required or larger than required size as set forth in this chapter shall not be reduced in size for transfer of ownership if such lot so subdivided will form two or more lots any of which shall not be in compliance with the requirements for minimum average residential density for the district in which such lot or lots are situated.

Each lot in a subdivision shall be required to have frontage on a public street.

The division of any parcel of land into two or more lots, blocks or sites, with or without streets or highways, including a resubdivision, shall be considered to be a subdivision.