The R-4 Multiple-Family Residential District is composed of certain medium-density residential areas of Richland Township representing a compatible mingling of single-unit and multiple-unit dwellings. The regulations for this district are designed to stabilize and protect the essential characteristics of the district; to promote and encourage a suitable environment for family life; and to prohibit all activities of a commercial nature except certain home occupations, controlled by specific limitations governing the size and extent of such nonresidential activities. To these ends, development is limited to a medium concentration and permitted uses are typically single-  and two-unit dwellings, townhouses, plus certain public facilities which serve the residents of the district. However, high-rise apartments, with corresponding proportions of open space, also may be developed under prescribed standards of density and open space.
A building may be erected or used and a lot may be used or occupied for any of the following purposes:
A. 
Permitted uses.
(1) 
Any use and accessory use permitted in the R-1 District.
(2) 
Apartments and multistory multiple-family dwellings.
(3) 
Funeral homes.
(4) 
Multiple-family dwelling.
(5) 
Townhouses with not more than six dwelling units in one structure.
(6) 
Two-family dwelling.
B. 
Uses permitted by special exception.
(1) 
Family day-care/group day-care home/day-care center as regulated by Article XXII.
(2) 
Group home.
(3) 
Home business.
(4) 
Hospital.
(5) 
Nursing home.
(6) 
Planned residential development.
(7) 
Private school not exceeding 30 students.
A. 
Lot area and width. The minimum lot area for every building unit hereafter erected or altered shall be as follows:
(1) 
One-family detached dwelling, convent, monastery, rectory or parish house: 8,700 square feet and width at the building line of not less than 60 feet.
(2) 
Two-family dwelling: 4,350 square feet per dwelling unit and a width at the building line of not less than 60 feet.
(3) 
Multiple-family dwelling: 10,000 for the first unit and not less than 4,300 square feet per each additional dwelling unit or apartment and a width at the building lines of not less than 150 feet.
(4) 
Townhouses: 10,890 square feet for the first unit and not less than 2,700 square feet per each additional unit and a width at the building line of not less than 150 feet for a row dwelling containing three or more dwelling units, but not to exceed six. If a row dwelling is arranged, designed or intended to be sold or owned in separate ownership between party walls, the minimum width of lot between center lines of party walls shall be 16 feet and the one-hundred-fifty-foot minimum width of total site frontage shall apply for the entire structure.
(5) 
Church and similar place of worship: as required in the R-1 District.
(6) 
Private school not exceeding thirty (30 students: as required in the R-2 District.
(7) 
Public or private school: as required in the R-1 District.
B. 
Building area. All buildings, including accessory uses, except multifamily dwellings shall cover not more than 35% of the area of the lot. Multifamily dwellings shall cover not more than 40% of the area of the lot.
C. 
Yard area setbacks.
(1) 
No building or structure shall be erected or enlarged unless the minimum yard areas and setbacks are provided as follows:
(a) 
One-family detached dwelling and two-family dwellings:
[1] 
Front yard: not less than 35 feet.
[2] 
Side yard: not less than 10 feet.
[3] 
Rear yard: not less than 30 feet.
(b) 
Multiple-family dwelling, townhouses and multistory buildings. All yards to be equal to building height or:
[1] 
Front yard: not less than 50 feet.
[2] 
Side yard: not less than 25 feet.
[3] 
Rear yard: not less than 35 feet except where abutting on a street, then a fifty-foot setback is required.
(c) 
Church and similar place of worship:
[1] 
Front yard: not less than 40 feet.
[2] 
Side yard: not less than 40 feet.
[3] 
Rear yard: not less than 30 feet.
D. 
Corner lots. Corner lot setbacks shall conform to the front yard requirements set forth for this district.
E. 
Exception. Where more than 50% of the lots within a block contain existing structures, the front yard setback may be reduced to conform to the average setback line of existing structures.
Height regulations shall be as permitted in the R-2 District, except that multiple-family dwellings, townhouses and multiple-story apartment buildings shall not exceed 60 feet in height.
Every one-family or two-family dwelling unit hereafter erected or altered shall have a building area of not less than 700 square feet per dwelling unit. Every dwelling unit of more than one story hereafter erected or altered shall have a total floor area of not less than 1,000 square feet per dwelling unit. Every two-family dwelling hereafter erected or altered shall have a building area of not less than 1,400 square feet. Every apartment must provide a minimum of not less than 400 square feet of habitable living space, contain not less than two habitable rooms, at least one of which shall be a private bathroom, and shall have separate and sanitary facilities, cooking and dining accommodations provided for each unit.
At least 500 square feet per family unit shall be set aside and maintained for outdoor recreational area and maintained by the owner of the development if the development contains three or more dwelling units.
Off-street parking and loading facilities shall be provided as required or permitted under Article XVIII.