A. 
Certain words in this chapter are defined for the purposes thereof as follows:
ALTERATION
As applied to a building or structure, any change or rearrangement of the structural parts or any enlargement, whether by extending on any side or by increasing in height, or the moving from one location to another. It does not include ordinary repairs to buildings or structures.
BUILDING AREA
Shall be determined by measuring around the exterior of the foundation walls or foundation structures of buildings, and shall include the ground floor area of porches.
CORNER LOT
A parcel of land at the junction of and fronting on two or more intersecting streets.
DEPTH OF A LOT
The mean distance from the street line of the lot to its rear line, measured in the general direction of the side lines of the lot.
FAMILY
Any number of individuals related by blood, marriage or adoption, or not more than three persons who are not so related, living together as a single housekeeping unit, using rooms and housekeeping facilities in common and having such meals as they may eat at home generally prepared and eaten together.
FENCE
A structure or barrier which is either directly or indirectly laid upon or affixed to the ground or another structure, constructed of wood, metal, stone, brick, plastic or other natural or prefabricated material which either completely or partially encloses a tract of land or portion thereof. The term "fence" also includes other structures commonly referred to as a "trellis," "arbor," "gate," "lattice," "gazebo," "pagoda," "portico" or other similar structures designed to set off, screen or otherwise limit access to or from any portion of real property or those maintained primarily for aesthetic purposes.
[Added 4-14-2003 by L.L. No. 1-2003]
HEIGHT OF BUILDINGS
The vertical distance, in the case of flat roofs, from the curb level, where it has been established in business districts, to the highest point of the roof or, in other cases, the vertical distance from the mean level of the ground surrounding the building to the highest point of the roof. In the case of pitched roofs, it is measured to the average height of the gables.
INTERIOR LOT
A lot other than a comer lot.
LOT
A parcel of land occupied by one building and the accessory buildings or uses customarily incidental to it, including such open spaces as are required by provisions of this chapter, and such open spaces as are arranged and designed to be used in connection with such building or buildings. The word "lot" shall include contiguous parcels of land which are owned by a common owner or owners, and such contiguous parcels of land, owned by a common owner or owners, shall constitute one lot.
[Amended 8-30-1976 by L.L. No. 3-19761
LOT AREA
The area of a lot on which a building and its accessories are located.
MULTIPLE DWELLING OR APARTMENT HOUSE
A residence building accommodating two or more families living independently of each other and with independent facilities to do their own cooking on the premises.
NONCONFORMING BUILDING USE
One that does not conform to the regulations of the use district in which it is situated.
PUBLIC GARAGE
A building, other than a private garage, one or more stories in height, used for the storage or repair of motor vehicles or for a gasoline filling station.
SINGLE-FAMILY DWELLING
A building designed for and occupied exclusively as a home or residence for not more than one family.
STREET LINE
The front line of an interior lot and the front and side line adjacent to the street of a corner lot.
STRUCTURE
Any combination of materials, no matter what the nature of those materials, forming a construction or a part thereof, the use of which requires location on the ground or attachment to something having location on the ground, including, but not limited to, fences, walls, gates, gate posts, platforms, stands, pools, porches, sheds, barns, shelters, signs, signposts, standpipes, tanks, radio towers, radio antennas, television towers, television antennas, parabolic or hemispheric discs or dishes or other similar convex or concave antennas (but excluding conventional television and radio aerials), tents, hedge rows, plant rows, trellises and the like.
[Added 7-22-1985 by L.L. No. 1-1985]
TWO-FAMILY DWELLING
A building designed for and occupied exclusively as a home or residence for two families living independently of each other and with independent facilities to do their own cooking on the premises.
YARD
An open unoccupied space on the same lot with the building, open and unobstructed from the ground to the sky, except as otherwise provided in these sections.
(1) 
REAR YARDA yard across the full width of the lot from the rear wall of the building to the rear line of the lot.
(2) 
FRONT YARDA yard across the full width of the lot extending from the front wall of the building to the street line.
(3) 
SIDE YARDA yard extending from the front yard to the rear yard between the building and the adjacent side line of the lot.
B. 
Words used in the present tense include the future; the singular number includes the plural, and the plural the singular; the word "lot" includes the word "plot"; the word "building" includes the word "structure"; the word "occupied" includes the words "designed or intended to be occupied"; and the word "used" includes the words "arranged," "designed" or "intended to be used."
C. 
For the purpose of these regulations, each of the independent units into which a building is divided by party walls shall be regarded as a separate building.