A. 
In M-R Districts, no building or other structure or land shall be used and no building or other structure shall be built for any purpose other than:
(1) 
A one-family dwelling, including the following accessory uses and buildings:
(a) 
Outdoor storage of not more than one each of the following: boats, boat trailers, camp trailers, utility trailers owned for personal use by a resident.
(b) 
Private garages or open parking for operative passenger vehicles with current license plates owned by persons visiting or residing on the premises.
(c) 
Playhouses, toolhouses or garden houses.
(d) 
Private swimming pools not operated for gain.
(e) 
Agriculture as defined herein.
(f) 
Garage, porch, yard or equivalent sale on not more than three consecutive days and not more than three times per twelve-month period.
(2) 
Two-family dwellings.
(3) 
Home occupations as defined herein, subject to the provisions of § 185-92. The area used for home occupation shall not exceed 15% of a dwelling unit.
(4) 
Multifamily dwellings as defined herein.
(5) 
Other uses as provided by Article XIII, Signs, and § 185-72, Temporary uses and structures.
B. 
Prohibited uses. Any use not specifically permitted shall be prohibited.
A. 
Density.
(1) 
Density shall not exceed a density factor of 27.0 per acre of lot, including street area. Density factor refers to the probable number of individuals expected to be living in the development, given the particular type of unit(s) as calculated pursuant to this subsection. The density shall be calculated by using the following factors and formula:
Type of Unit
Density Factor
Apartment efficiency
1.5
Apartment 1 bedroom
2.0
Apartment 2 bedrooms
3.0
Townhouse 2 bedrooms
3.0
Townhouse 3 bedrooms
4.0
(2) 
The total density factor for a project shall be computed by multiplying the factors above by the number of each type of dwelling unit proposed and totaling the sum of all the products. This total shall be divided by the gross acreage and the results shall be the density factor per acre.
B. 
Required setbacks.
(1) 
The minimum setback requirements apply only to the entire tract, and no buildings shall be located within such setback areas. The minimum distance between buildings in an apartment development shall be 25 feet, except that no wall containing an entrance to an apartment shall be closer to another apartment building than 50 feet. No apartment building shall be closer to a preexisting single-family or two-family dwelling than 50 feet. For each foot that the height of a building exceeds 35 feet, these dimensions will be increased by a foot. Every apartment building shall have a minimum setback of 20 feet from all interior roads, driveways and parking areas. A wall of an apartment structure or parallel walls of adjacent apartment structures shall not continue in the same plane for a length of more than 75 feet without an offset of at least four feet.
(2) 
Each apartment development shall provide a playground area or areas at a standard of 500 square feet for each 10 dwelling units. Outdoor play equipment shall be installed in each playground in sufficient amount and variety to service the occupants of the development.
(3) 
Minimum setback restrictions for single- or two-family units developed in an M-R District are defined in §§ 185-11 and 185-19.
C. 
Additional ancillary storage. Additional ancillary storage areas of at least 150 cubic feet must be provided per each dwelling unit. This area can, at the option of the builder, be located either within each dwelling unit or in a convenient centrally located area in the basement or ground floor or elsewhere, where personal belongings and effects may be stored under lock and separated from the belongings and effects of other occupants.
D. 
Maintenance of grounds. The entire area of an apartment development not improved for driveways, parking area or covered by buildings or walkways shall be attractively landscaped and seeded and properly maintained at all times.
E. 
Refuse requirements. Every apartment development shall be provided with garbage and refuse collection and storage areas screened from view and away from the fronts of apartment buildings.
The requirements shall be as set forth in §§ 185-12 and 185-74.
Driveways for ingress and egress for apartment developments shall:
A. 
Connect with other than minor streets wherever possible;
B. 
Not be located within 200 feet of an existing street intersection; and
C. 
Have a pavement width of at least 22 feet, except where they are within a parking area, in which case they shall not be less than 25 feet in width.
The slopes of yards shall conform to § 185-85D.