A principal building or a principal use permitted in an R-1 Residential District.

Boardinghouse or rooming house.

Convalescent home or nursing home which does not primarily care for or treat patients with contagious diseases, drug or alcohol patients, or mentally ill or mentally retarded patients.

Funeral home.

Community garage.

Private parking lot if the parking lot is used only for the parking of passenger motor vehicles owned or operated by the person owning or leasing the parking lot, his/her/its employees, boarders, house tenants, visitors and the like and the parking lot is operated only to meet the requirements of the exception in § 240-27B(1).

Row houses.

Apartment houses.

Conversion apartment houses.

Two-family houses, including two-family duplex houses and two-family sectional houses.

Multifamily houses.

The accessory buildings and accessory uses permitted on a lot are those which are customarily incidental to the principal building or principal use on the lot, including, in the case of a single-family house or a two-family house, the accessory buildings and accessory uses set forth by way of example in § 240-15B.

No accessory use shall be permitted in connection with a private parking lot.

Private academic school;

Nonprofit charitable or religious institution, or municipal or public institution, for other than correctional or rehabilitative purposes or diagnostic, treatment or scientific testing purposes; or

Senior citizens center (which primarily provides at least three of the following activities, programs or services for the elderly: counseling, education, health, nursing, nutrition, recreation, referral, religious, self-development or social welfare activities, programs or services for the elderly), when authorized as a special exception by the Zoning Hearing Board and under such appropriate safeguards and conditions attached by the Zoning Hearing Board as it deems necessary. In determining whether a special exception is to be granted or denied, the Zoning Hearing Board shall take into consideration whether such building or use will be appropriately located and designed in light of the surrounding uses in the neighborhood and the character, of the neighborhood; will meet a community need without substantially adversely affecting the essential character of the neighborhood; and will be consistent with the surrounding uses in the neighborhood and the character of the neighborhood so as to conserve the objective value of maintaining existing local groupings of consistent uses and yet encourage the most appropriate or effective use of the land.

There shall be a front yard, the depth of which to the building line shall be not less than 25 feet. However, the depth of the front yard to the building line may be decreased under § 240-53A in the case where more than 50% of the residential frontage of a block has been improved as of September 13, 1954.

In the case of a community garage on a reverse lot, the yard abutting the alley shall be deemed to be the front yard, and the depth of that front yard to the building line may be reduced to five feet.

A single-family house shall have two side yards (one at each side of the lot), the width of each of which shall be not less than three feet.

A two-family house, boardinghouse or rooming house, convalescent home or nursing home, funeral home, apartment house, conversion apartment house, or multifamily house shall have two side yards (one at each side of the lot), the width of each of which shall be not less than six feet.

A row house which is at the end of the row shall have a side yard (at the side of the lot adjoining the row house), the width of which shall be not less than six feet.

A community garage shall have two side yards (one at each side of the lot), the width of each of which shall be not less than six feet.

A principal building other than one referred to above shall have two side yards (one at each side of the lot), the width of each of which shall be not less than 10 feet. If the building height of the building is over 35 feet, the width of each side yard shall be increased one foot for each five feet, or fraction thereof, by which the building height exceeds 35 feet.

In the case of a corner lot at the intersection of two streets, the width of the side yard on the street side shall be not less than six feet or the depth established under § 240-53A, whichever is less.

In every case under Subsection B(1), (2), (5) or (6) above (and except for a row house, community garage or private parking lot), the total width of the two side yards in the aggregate shall equal not less than 20% of the lot width measured at the building line.

For a principal building or principal use permitted in an R-1 Residential District, off-street parking spaces shall be provided as required by § 240-20A

For a two-family house, row house, apartment house, conversion apartment house or multifamily house, off-street parking spaces shall be provided at the rate of one parking space for each dwelling unit.

For a boardinghouse or rooming house, off-street parking spaces shall be provided at the rate of one parking space for each dwelling unit; one parking space for each of the first four boarding units or rooming units; one parking space for each three boarding units or rooming units in excess of four; and one parking space for the owner or operator.

For a convalescent home or nursing home, off-street parking spaces shall be provided at the rate of one parking space for each four patient beds; one parking space for each staff or visiting doctor; and one parking space for each two employees (including nurses) on the largest work shift.

For a funeral home, off-street parking spaces shall be provided at the rate of one parking space for each vehicle customarily used in the operation of a funeral home (such as hearses, limousines, flower cars and the like); three parking spaces for the director or supervisor of the funeral home; one parking space for each family dwelling unit located on the premises; one parking space for each two employees (other than the director or supervisor or employees residing on the premises); and such additional parking spaces for business visitors or guests as shall be determined by the Department.

For a private academic school, off-street parking spaces shall be provided at the rate of one parking space for each two employees (including teachers and administrators) and such additional parking spaces for students and visitors as shall be determined by the Department.

For a nonprofit charitable or religious institution or a municipal or public institution, off-street parking spaces shall be provided at the rate of one parking space for each two employees and such additional parking spaces for members, business visitors or guests as shall be determined by the Department.

On a private parking lot owned by the owner or operator of the principal building or use (or on a private parking lot leased by such owner or operator for a period of not less than 10 years) and a substantial portion of which is within 450 feet (by the most direct walking route) of the lot line of the lot containing the principal building or the principal use;

On a free municipal parking lot, a substantial portion of which is within 450 feet (by the most direct walking route) of the lot line of the lot containing the principal building or the principal use; or

In the case of a single-family house, two-family house, boardinghouse or rooming house, conversion apartment house or multifamily house, at a community garage a substantial portion of which is within 450 feet (by the most direct walking route) of the lot line of the lot containing the principal building or the principal use.