A structure, the use of which is incidental to that of the main building and which is located on the same premises.

A smaller, secondary dwelling unit located on the same lot as a primary residential, commercial, or mixed-use structure. An ADU must have a separate entrance from the outside of the building or through a common hall and must provide living, cooking, sanitary, and sleeping facilities. All ADUs must adhere to building code regulations for residential use.

An accessory dwelling unit (ADU) that is connected to or contained within the primary structure, such as a basement, building addition, or attached garage.

An accessory dwelling unit (ADU) located within an existing or newly constructed accessory structure such as a detached garage, carriage house, or other freestanding building.

A use, occupancy or tenancy customarily incidental to the principal use or occupancy of the main building. Such accessory uses may include, among others, the following:

Provision of daytime care to adults whose ability to independently perform the normal activities of daily life is limited by age or physical or other impairment but who do not require the level of care provided by nursing homes or medical facilities.

Any habitable structure or habitable part of any structure in which adult day care is provided:

A dwelling unit in which adult day care is provided to not more than six adults at one time by a resident of the dwelling.

Farming and similar commercial endeavors relating to the land and its use for growing crops for profit.

A narrow serviceway providing a secondary means of access to abutting properties.

As applied to a building or structure, a change or rearrangement in the structural parts or in the exit facilities or an enlargement, whether by extending on the front, rear or on a side or by increasing in height, or the moving from one location or position to another.

Approved by the Director of Planning and Development or his/her designee under the regulations of this chapter or approved by an authority designated by law or this chapter.

That space of a building that is partly below grade which has more than half of its height, measured from floor to ceiling, above the finished ground level at any point.

Enclosed space containing one or more bathtubs or showers, or both, and which may also contain water closets, lavatories or fixtures serving similar purposes. (See "toilet room.")

An owner-managed, single dwelling unit that provides five to 10 guest rooms, limited to two persons or one family per guest room, used for lodging on an overnight basis.

A multiple dwelling where sleeping facilities and meals are provided, for compensation, to long-term guests. (See also "rooming house.")

See "motel or boatel."

Any structure wholly or partially enclosed within exterior walls or within exterior and/or party walls and a roof, affording shelter to persons, animals, or property, including porches. (See "structure".)

The total area (taken on a horizontal plane at the main grade level) of the principal building and all accessory buildings, including porches, attached or free standing decks, balconies projecting more than two feet from a building or structure, ramps, and/or landings. The total building area shall be used for determining required yards and maximum percentage of allowed lot coverage but shall not include parking areas and parking spaces. Pergolas and terraces and patios shall be exempt from total lot coverage requirements. However, neither pergolas or terraces and patios above grade shall be located in a required yard.

Offices where services are provided that require specialized training or professional certification, including but not limited to accountant, appraiser, attorney, architect, engineer, surveyor, stockbroker, physician, dentist, chiropractor, massage therapist, psychologist, and optometrist.

A roofed structure, with or without enclosing walls, used for the storage of one or more automobiles.

That space of a building that is partly or entirely below grade which has more than half of its height, measured from floor to ceiling, below the average established curb level or finished grade of the ground adjoining the building.

Any structure used for worship or religious instruction, including social and administrative rooms accessory thereto.

Any organization catering exclusively to members and their guests or premises and buildings for recreational or athletic purposes which are not conducted primarily for gain, provided that there are not conducted any vending stands, merchandising or commercial activities, except as required for the membership and purposes of such club. It shall include fraternal, social and service organizations. Any such organization's premises or building which provides sleeping accommodations for more than five persons shall be considered a multiple dwelling.

A subdivision in which limited deviations from the regulations of the zoning district in which it is built are permitted in accordance with the provisions of § 325-11 of this chapter.

A lot that is specifically intended to be gardened by a group of people, with membership open to the public, operating in association with each other and under sponsorship by a nonprofit or voluntary organization utilizing either individual or shared plots on private or public land. The land may produce fruit, vegetables, and other garden produce; culinary, medicinal, or beneficial plants; and/or ornamentals. It may also contain structures intended to support year-round gardening, community events or education of the gardening process.

The changing of use or occupancy by alteration, addition or by other reorganization.

A group of four or more unrelated persons, exclusive of minor dependent children in the care of a parent or relative, occupying a dwelling unit without auxiliary social facilities. Any dwelling unit occupied by a cooperative household shall be considered a multiple dwelling. This category shall not be construed to permit facilities which provide living accommodations for persons requiring supervised residential care, such as halfway houses, hostels or group homes. (See "group-care residence.")

A parcel of land at the junction of and bounded by two or more intersecting streets.

A structure freestanding or attached to a building or an aboveground swimming pool, consisting of one or more planes constructed of wood, metal, and/or other materials including a support system of footings and foundation walls and/or piers, pilasters, columns, and posts, joists, beams, stringers, floor boards, and/or similar structural members, and including, any open enclosure, ramps, and/or landings and other devices connecting one level with another, with the ground and/or an adjoining structure and, if required by building code, balusters and railings.

The set of electronic files which store the boundaries of the zoning districts, including the historic districts, and which are maintained as the Official Zoning Map of the City of Ithaca, New York, including any accompanying files which store the legend, certifications, titles and all other graphic devices necessary to produce the Zoning Map in analog format.

The Director of Planning and Development or designee.

A multiple dwelling which provides sleeping accommodations and domestic facilities and services for a group of college, university or secondary school students.

A means of vehicular access from a street to the interior of a lot.

The portion of a driveway which gives immediate vehicular access to two or more parking spaces.

Any building or structure or part thereof used and occupied for human habitation or intended to be so used. (See "habitable space.")

A dwelling unit occupied exclusively for residential purposes by an individual or family and not more than one unrelated individual or a functional family unit. In the R-1 Zones, occupancy by an individual or a family and not more than two unrelated individuals is permitted if the dwelling is owner-occupied. In the R-2 and R-3 Zones, occupancy by an individual or a family and not more than two unrelated individuals is permitted. A one-family dwelling may be constructed in any of the following configurations, as permitted in specific zoning districts:

A building containing two dwelling units occupied exclusively for residential purposes. In R-1 and CR-1 Zones, each unit may be occupied by an individual or family and not more than one unrelated individual, except that if one unit is occupied by a single individual, the other may be occupied by not more than three unrelated individuals; and if not owner-occupied, one unit may be no larger than 50% of the floor area of the larger, and each unit may be occupied by no more than two unrelated persons. In R-2 and CR-2 Zones, each unit of a two-family dwelling may be occupied by an individual or family and not more than two unrelated individuals.

One or more rooms designed or used for living quarters by one household, including provisions for living, cooking, sanitary and sleeping facilities, and having a separate entrance from the outside of the building or through a common hall.

Additions to buildings, structures or land with respect to bulk, mass or other measures regulated by this chapter. Enlargements include but are not necessarily limited to: additional numbers of dwelling units, additional numbers of unrelated individuals occupying residential buildings, and projects that create additional space physically attached to a building or structure or convert existing space to a different use.

A way of departure from the interior of a building or structure to the exterior at street or grade, including doorways, passageways, hallways, corridors, stairways, ramps, fire escapes and all other elements necessary for egress or escape.

To make a greater or expanded use of a property. This term applies to both uses of structures and to uses of land and indicates a larger scope of operations on the property, including projects that create additional space physically attached to a building or structure. An addition of unrelated individuals residing in a residential structure without a physical addition of space is considered an extension. Extensions also include a greater use of land or property for the operation of any aspect of a use.

One or more persons occupying a dwelling unit, all of whom are related by blood, marriage or adoption.

That type of construction which divides the design stage into component parts, each story or stage of the building or structure requiring approval by the Director of Planning and Development or designee previous to construction: Each story or stage of the building or structure can be built before the design for any subsequent story need to be completed or approved. Fast-tracking does not exempt the owner from any other provisions of this chapter or any other City ordinance. The initial application for fast-tracking shall include the submission of architectural preliminary drawings of the conceptual plan and design, including at least ground plan dimensions and building height, which shall not be altered at any later stage except by express consent of the Director of Planning and Development or designee.

Any facility that is used to transform raw ingredients, by physical or chemical means, into food or other items meant for human consumption, or for food into other forms, including the processing and packaging of the food items. Food production facilities may include, but are not limited to, bakeries, brew pubs, coffee roasters, wineries and food-packaging facilities.

A multiple dwelling used and occupied by a cooperating group of college or university students and containing and providing domestic and social facilities and services thereto.

A group of individuals living together in a single dwelling unit and functioning as a family with respect to those characteristics that are consistent with the purposes of zoning restrictions in residential neighborhoods.

A structure used and occupied by a professional licensed mortician for burial preparation and funeral services.

An enclosed space for the storage of one or more motor vehicles, provided that no business, occupation or service is conducted for profit therein.

An enclosed space designed primarily for repair and service of motor vehicles.

A dwelling unit in a structure containing three or more dwelling units which may share one or two walls with other dwelling units or structures, the distinguishing feature of such apartment being that it shall have access to private or semiprivate open space located on the same premises.

Any area of land, including structures thereon, that is used for the sale of gasoline or any other motor vehicle fuel and may include oil and other lubricating substances, including any sale of motor vehicle accessories, and which may or may not include facilities for lubricating, washing or otherwise servicing motor vehicles except painting.

A specification, code, rule, guide or procedure in the field of construction or related thereto, recognized and accepted as authoritative.

The natural surface of the ground or the surface of the ground after completion of any change in contour abutting a building or premises.

A reference plane representing the average of finished ground level on each side of the building at exterior walls. On the sides of the building where grade is level, the measurement will be taken at a point adjoining the building. Where the finished ground level slopes away from the exterior walls, the measurement shall be taken at the lowest point within the area between the building and the lot line or, where the lot line is more than six feet from the building, between the building and a point six feet from the building.

That portion of any lot treated in such a manner as to provide light, air and landscaped open space for the recreational and visual enjoyment of the occupants of any dwelling built on said lot. Green areas may include lawns, trees, shrubbery, garden areas, footpaths, play areas, fountains, pools, watercourses and wooded areas but shall not include required parking spaces and service areas or vehicular surfaces other than access drives which are not used for vehicular parking.

A portion of a lot that is set aside for public or private use without any construction or parking areas. The space may be used for passive or active recreation, may be reserved to protect natural areas, or may serve as a buffer between adjacent lots or uses. The area may be naturally occurring or landscaped. Where a minimum green space requirement applies, at least 75% of the required area shall be softscape including trees, shrubs, natural plantings, garden areas, lawns, and other live vegetative coverings. The remaining area may include pedestrian amenities such as sidewalks or patios. Required green space must be permanently maintained in a healthy growing condition at all times.

Space occupied by one or more persons for living, sleeping, eating or cooking. Kitchenettes shall not be deemed to be habitable space. (See "nonhabitable space," "public space" and "exit.")

Places that provide health care services, but are not intended for overnight stay. Health care facilities may include clinics, outpatient care centers, and urgent care facilities.

Fabrication, processing, manufacturing, converting, altering, assembling or other handling of products. Heavy industrial uses may result in loud noises, vibrations, or odors. These negative effects must be mitigated, so that the impacts do not reach beyond the boundaries of the district where the use is permitted.

he vertical distance measured from grade plane to the highest level of a flat or mansard roof or to the average height of a pitched, gabled, hip or gambrel roof, excluding bulkheads, housing for mechanical equipment, towers and similar constructions not intended for human occupancy or necessary equipment carried above roof level. Where a building contains sections of a roof of varying heights, the height of that building shall be measured using that section of the roof that has the highest elevation from grade plane. See the definition for determining grade plane.

Any owner or long-term leaseholder of a property who offers a short-term rental.

A building containing rooms occupied for sleeping purposes by guests and where a general kitchen and dining room are provided within the building or in an accessory building.

An organization providing assistance to people in obtaining services to meet their needs. Services provided may include but are not limited to one or more of the following: information, guidance, counseling, therapy, group social activity, remedial instruction, self-help and support. Services may not include the provision of alcohol.

The presence within or contiguous to a dwelling, dwelling unit, rooming house, rooming unit or premises of insects, rodents, vermin or other pests.

A lot, land or structure or part thereof used for the collecting, storage or sale of wastepaper, rags, scrap metal or discarded material or for the collecting, dismantling, storage or salvaging of machinery or vehicles not in running condition or for the sale of parts thereof.

Space, 60 square feet or more in floor area, with a minimum width of five feet, used for cooking or preparation of food.

Space, less than 60 square feet in floor area, used for cooking or preparation of food.

A natural or human-made feature of the City of Ithaca, so designated by the Common Council, deserving special recognition and protection for its historic, cultural or aesthetic value, as further described in Chapter 228, Landmarks Preservation, of this Code.

An area of the City, so designated by the Common Council, containing one or more landmarks.

An establishment licensed by the State of New York to manufacture alcohol (whether beer, cider, wine and/or liquor) with wholesale and retail privileges. A large producer may not produce more than 75,000 barrels (beer) or 250,000 gallons (wine, cider, other beverages) of alcoholic beverages annually at any location. A large producer may have a restaurant in or adjacent to it, as permitted by law. Any silos for storage of raw materials must be no more than 25 feet in height, including any supporting structures, for areas where there is no fire department ladder truck access, and a maximum of 40 feet in height, including any supporting structures, in areas where there is fire department ladder truck access. In addition, silos must contain some sort of filtration to prevent grain or dust from escaping when the silo is being filled or emptied.

Fabrication, processing, manufacturing, converting, altering, assembling or other handling of products that does not result in:

A dwelling unit that is offered for rent in whole or in part for 30 or more consecutive days.

A portion or parcel of land, considered as a unit, devoted to a certain use or occupied by a building or a group of buildings that are united by a common interest or use and the customary accessories and open spaces belonging to the same.

A parcel of land occupied or to be occupied by one or more buildings and any accessory buildings, together with such open spaces as are required under the provisions of this chapter, having not less than the minimum area and width required by this chapter for a lot in the district in which such land is situated and having frontage on a street or on such other means of access as may be determined, in accordance with the provisions of law, to be adequate as a condition of the issuance of a building permit for a building on such land.

Any establishment maintaining on its premises for sale to the public more than 100,000 board feet of lumber or other forest product.

An intermediate level or levels between the floor and ceiling of any space as defined in the New York State Uniform Fire Prevention and Building Code.

Occupancy of a building in part for residential use and in part for some other use not accessory thereto.

Two or more uses conducted on the same property, by one or more occupants, either in the same structure or separate structures, or in the open.

A transportable, single-family dwelling unit suitable for year-round occupancy and containing the same conveniences as immobile housing with respect to water supply, light, heat, power and waste disposal. A mobile home is a portable unit designed and built to be towed on its own chassis, comprised of a frame and wheels, connected to utilities and designed without a permanent foundation for year-round living. A unit may contain parts that may be folded, collapsed or telescoped when being towed and expanded later to provide additional cubic capacity, as well as two or more separately towable components designed to be joined into one integral unit capable of being again separated into the components for repeated towing. Mobile units can be designed to be used for residential units; excluding, however, travel trailers, motorized homes, pickup coaches and camping trailers. (See also "trailer or travel trailer.")

A parcel of land under single ownership which has been planned and improved for the placement of mobile homes for nontransient use, consisting of not less than five acres and not fewer than 25 mobile home lots. (See also "trailer camp.")

A building or group of buildings, whether detached or in connected units, designed and used as individual sleeping units primarily for transient automobile or boat travelers and providing accessory off-street parking facilities.

The City of Ithaca in the County of Tompkins in the State of New York.

A retail or service facility catering to the day-to-day commercial needs of the surrounding neighborhood. Such facility shall be limited to the retail sale of convenience goods, such as groceries, pharmaceuticals and sundries, and to personal service facilities, such as barber- and beauty shops, self-service laundromats and dry-cleaning establishments.

An area used by several individuals or families, operating in association with each other and under sponsorship by a nonprofit or voluntary organization, primarily for seasonal production of vegetables and other garden produce for home consumption by the individuals or families directly engaged in such production or for food donations.

A neighborhood recreation and/or neighborhood service facility open to and providing programs for neighborhood residents.

A building, structure or lot of record legally existing at the time of enactment of this chapter, or any subsequent amendment, which does not conform to the minimum parking or dimension requirements for the district in which it is located.

A property use of record legally existing at the time of enactment of this chapter, or any subsequent amendment, which does not conform to the use regulations of the district in which it is situated.

Space used as kitchenettes; pantries, bath-, toilet, laundry, rest, dressing, locker, storage, utility, heater and boiler rooms; closets and other spaces for service and maintenance of the building; and those spaces used for access and vertical travel between stories. (See definitions of "habitable space," "public space" and "exit.")

A facility designed to provide daytime care or instruction for two or more children from two to five years of age, inclusive, and operated on a regular basis.

In R-2c Zones only, a person that is permitted to occupy a dwelling unit or building in an R-2c Zone.

A space that is in compliance with building, housing and zoning codes, that is eligible to receive a certificate of occupancy for commercial, residential, institutional, educational, or other similar uses, not to include storage or warehousing uses.

In instances where owner-occupancy is required, "owner" shall be defined as follows: A person who maintains his/her principal residence in property for more than six months of each calendar year and who is:

A building or part thereof which is designed specifically for vehicle parking.

An off-street area intended for parking a vehicle. See § 325-20 for standards and specifications for parking space sizes, locations and requirements.

A public right-of-way primarily for pedestrians, from which all motor vehicles are barred.

An arbor or passageway for climbing plants with an overhead frame supporting open lattice work.

The water supply system, drainage system, vent system, fixtures and traps, including their respective connections, devices and appurtenances, within the property lines of the premises.

A structure projecting from the wall or walls of a building, with a roof, that may be open to weather or wholly or partially enclosed with walls. A porch shall be deemed part of the building.

Water which is approved for drinking, culinary and domestic purposes.

A portion or parcel of real property, including appurtenances and improvements therein, used and devoted to a common use or facility.

A lot or parcel of land upon which one or more buildings have been erected at some time in the past but upon which no buildings now stand.

A dwelling unit where the owner or long-term leaseholder resides for a minimum of 184 days per calendar year.

A single structure (located on a parcel) containing a use permitted in the zoning district in which it is located.

Space within a residential building for public use, such as lobbies; lounges; reception, ball-, meeting, lecture and recreation rooms; banquet and dining rooms and their kitchens; and swimming pools.

A New York State registered facility for the collection of mandated, clean, source-separated, recyclable materials such as glass, aluminum, bimetal and plastic containers.

One or more rooms designed or used for living quarters by one household, which may or may not include separate sanitary facilities and which must include either complete kitchen facilities or a separate entrance from the outside of the building or through a common hall. (See also "boardinghouse.")

One or more rooms designed or used for living quarters by one household, which may or may not include separate sanitary facilities and which must include either complete kitchen facilities or a separate entrance from the outside of the building or through a common hall.

A residential structure composed of three or more attached modules with shared sidewalls, the facade of each module measuring no more than 25 feet in length. Modules within a row house may consist of a single dwelling unit or may contain multiple vertically stacked dwelling units. Each module must have one street-facing entry.

A public, private or church-affiliated establishment for the education at all levels of children and/or adults in subjects or skills.

Paved, enclosed or visually screened areas which are used for maintenance or service purposes.

Liquid waste containing animal or vegetable matter in suspension or solution and which may include industrial wastes and liquids containing chemicals.

A dwelling unit that is offered for rent in whole or in part for less than 30 consecutive days.

Information posted online or otherwise regarding short-term rentals at a particular property, including but not limited to information posted on third-party rental or hosting sites.

Any material, symbol, emblem, structure or device or part thereof composed of lettered or pictorial matter or upon which lettered or pictorial matter is placed when used or located out of doors or outside or on the exterior of a building, including exterior and interior window surfaces, for display of an advertisement, and includes sign frames, billboards, signboards, painted wall signs, hanging signs, illuminated signs, pennants, fluttering devices, projecting signs and ground signs and shall also include any announcement, declaration, demonstration, display, illustration or insignia used to advertise or promote the interests of any person or business when the same is placed in the view of the public.

The written authorization by the Board of Appeals to permit, in a given district, a property use which, because of its nature, location or effect on the surrounding neighborhood, warrants special evaluation of each individual case.

A nonstructural addition to the facade of any building which is covered in fabric or other flexible membrane. The fabric or membrane is supported by a rigid frame of tubing or other noncombustible material. A standard canopy is one that is constructed so that it cannot be retracted. Such standard canopy may only project from the face of the structure upon which it is mounted four feet from the face of the structure and be no taller than four feet. The standard canopy must be mounted on the face of the structure to provide for an unobstructed clearance below the rigid frame of the standard canopy of eight feet above the sidewalk below. A nonrigid valance may hang no greater than one foot below the rigid frame.

A nonstructural addition to the facade of any building which is covered in fabric or other flexible membrane. The fabric or membrane is supported by a rigid frame of tubing or other noncombustible material. A standard awning must be capable of being rolled up or retracted to within one foot of the face of the structure to which it is attached. Such standard awning must not be capable of projecting from the face of the structure upon which it is mounted more than four feet from the face of the structure and be no taller than four feet. The standard awning must be mounted on the face of the structure to provide for an unobstructed clearance below the rigid frame of the standard awning of seven feet above the sidewalk below. A nonrigid valance may hang no greater than one foot below the rigid frame.

The portion of a building which is between one floor level and the next higher floor level or the roof. A mezzanine, as defined in the New York State Uniform Fire Prevention and Building Code, is not a story. A basement shall be deemed to be a story when the finished surface of the floor next above is 1) more than six feet above grade plane or 2) more than 12 feet above the finished ground level at any point. A cellar shall not be deemed a story. An attic shall not be deemed to be a story if unfinished and without human occupancy.

Anything constructed or erected on the ground or which is attached to another structure or building. Structures shall not include patios or terraces.

An establishment for the sale of beer and other alcoholic beverages to be consumed on the premises, sometimes also serving food.

A level plane or surfaced patio that is less than 18 inches above grade, without a roof, and not supported by any permanent structure. Terraces and patios above grade shall not encroach into required yards.

A structure or part of a structure devoted to showing moving pictures or stage productions.

An enclosed space containing one or more water closets, which may also contain one or more lavatories, urinals and other plumbing fixtures. (See "bathroom.")

A dwelling unit sharing a minimum of one and a maximum of two walls with an adjoining dwelling unit and having direct exterior access from the ground floor.

A parcel of land under single ownership which has been planned and improved for the temporary placement of travel trailers for transient use, consisting of not less than five acres and not fewer than 25 trailer lots. (See also "mobile home park.")

A portable unit designed and built to be towed by an automobile, which can be operated independently of utility connections, is limited in width to eight feet in length to 32 feet and is designed to be principally used as a temporary dwelling. It shall, for the purposes of this chapter, also include motorized homes, pickup coaches and camping trailers. (See also "mobile home.")

A completely enclosed facility for the bulk sorting and/or packaging of glass, paper and other light recyclable materials.

An establishment licensed by the State of New York to sell beverages containing less than 16% alcohol (whether beer, cider or wine) at retail with limited manufacturing and wholesale privileges. An urban beverage manufacturer may not produce more than 5,000 barrels (beer) or 75,000 gallons (wine, cider, other beverages) of alcoholic beverages annually at any location. An urban beverage producer must offer on-site consumption, but may also produce beverages for off-site sale. An urban beverage producer may also have a restaurant in or adjacent to it, as permitted by law. Any silos for storage of raw materials may not exceed 25 feet in height (including any supporting structures) in areas where there is no fire department ladder truck access, and may not exceed 40 feet in height (including any supporting structures) in areas where there is fire department ladder truck access. In addition, silos must contain some sort of filtration to prevent grain or dust from escaping when the silo is being filled or emptied.

The specific purpose for which land or a building is designed, arranged or intended or for which it is or may be occupied or maintained.

The authorization by the Board of Appeals to vary or modify the application of any of the regulations or provisions of this chapter relating to the use, construction, structural changes in, equipment or alteration of buildings or structures or the use of land pursuant to Subdivision 4 of § 81-a of the General City Law. A use variance will refer to a modification of the use of the structure or land, whereas an area variance (formerly called "exception") will refer to changes in lot size, yard size, building coverage, building height, off-street parking, etc., as set forth in § 325-8 hereunder.

The supply and removal of air to and from a space by natural or mechanical means.

Ventilation by power-driven devices.

Ventilation by opening to the outer air through windows, skylights, doors, louvers or stacks, with or without wind-driven devices.

An activity that cannot exist outside of the waterfront area and is dependent on the water by reason of the intrinsic nature of its operation. These activities include, but are not limited to, ports, water-use industries, marinas and other boat docking structures, public beaches and other public water-oriented recreation areas, and fisheries activities.

Those structures or works associated with industrial, maritime, recreational, educational, or fisheries activities that require location at or near the shoreline.

That part of a lot not occupied by the principal building or structure and which shall not be occupied by any other building or structure from the ground upward unless specifically authorized in this chapter or other provisions of the City of Ithaca Code.

An authorization issued by the Director to permit the enlargement of a nonconforming structure which is used as permitted, and will continue to be used as permitted, in the district in which it is located, but does not comply with the minimum lot size; the maximum lot coverage by buildings; the maximum building height; and/or yard setbacks applicable in the district.