1. Zero Lot Line Single-Family Detached Residential. Within a common development, one interior side yard may be equal to zero for single-family detached residential use, subject to the following additional regulations:
A. The side yard opposite to the zero yard must equal at least twice the normal required side yard.
B. The normal side yard setback requirement must be maintained adjacent to any lot with an existing structure not within the common development or not otherwise designated for zero lot line use.
C. An easement for maintenance of the zero lot line façade is filed with the Polk County Register of Deeds and the City Clerk at the time of application for a building permit.
2. Single-Family Attached. When permitted, the minimum side yard opposite the common wall shall be equal to twice the normal required side yard.
3. Townhouse Residential. Where permitted, townhouse residential is subject to the following regulations:
A. The site area per unit must be 3,000 square feet in all districts where permitted.
B. The minimum width for any townhouse lot sold individually shall be 25 feet, except within an approved creative subdivision.
C. Coverage percentages are computed for the site of the entire townhouse common development.
4. Two-Family Residential.
A. The second dwelling unit shall be located to the rear of the site and shall be separated from the front dwelling unit by a minimum of 25 feet.
B. The second dwelling unit shall be served by a driveway at least ten feet in width, leading from a public street adjacent to the lot.
5. Downtown and Group Residential in TC District. Downtown and Group Residential uses are permitted in the TC District only on levels above street level. A unit or units specifically designed for occupancy by disabled residents may be developed at street level, subject to approval by the Board of Adjustment.
6. Mobile Home Parks in the MH District. Mobile home parks are permitted in the MH District as conditional uses, subject to approval by the Board of Adjustment. Following the effective date of this Zoning Code, no mobile home shall be located outside of a mobile home park. A mobile home park is subject to approval of a special use permit and compliance with the following regulations:
A. Certification. A certification of compliance with all ordinances and regulations regarding mobile home licensing, zoning, health, plumbing, electrical, building, fire protection, and any other applicable requirements shall be required of all mobile home parks.
B. Minimum and Maximum Area. A mobile home park shall be considered to be one zoned lot. The minimum contiguous area of a mobile home park shall be 100,000 square feet.
C. Density Requirements.
(1) The maximum gross density of a mobile home park shall be 10 units per acre.
(2) The minimum size of an individual mobile home space shall be 3,500 square feet for singlewide mobile home units and 5,000 square feet for doublewide mobile home units.
(3) Each mobile home space shall have a width of at least 40 feet wide and a length of at least 75 feet.
D. Site Development Standards.
(1) Setbacks. Each mobile home park shall have a minimum perimeter setback of 35 feet from adjacent nonresidential uses and 50 feet from adjacent residential uses. No space for a dwelling unit or any other structure shall be permitted in the required setback.
(2) Setback Landscaping. All area contained within the required setbacks except sidewalks and private drives shall be landscaped and screened in conformance with Chapter 173 of this Zoning Code. Screening shall be provided in conformance with Chapter 173 for any common property line with another nonresidential use.
(3) Impervious Coverage. Impervious coverage for a mobile home park shall not exceed 50 percent of the total site area.
(4) Open Space. Each mobile home park shall provide a minimum of 400 square feet of open recreational space per unit. Such space shall be provided at a central location accessible from all parts of the park by pedestrians. Required perimeter setbacks or buffers shall not be credited toward the fulfillment of this requirement.
(5) Separation Between Mobile Home Units. The minimum separation between a mobile home unit and attached accessory structure and any other mobile home units and/or accessory structure shall be 20 feet.
(6) Separation and Setbacks for Accessory Buildings. An accessory building on a mobile home space shall maintain a minimum rear and side yard setback of five feet. A minimum distance of ten feet shall be provided between any mobile home and an unattached accessory building.
E. Street Access and Circulation Requirements.
(1) Access to Public Street. Each mobile home park must abut and have access to a dedicated public street with a right-of-way of at least 60 feet. Direct access to a mobile home space from a public street is prohibited.
(2) Vehicular Circulation. The mobile home park must provide interior vehicular circulation on a private internal street system. Minimum interior street width shall be 27 feet. The street system shall be continuous and connected with other internal and public streets or shall have a cul-de-sac with a minimum diameter of 90 feet. No such cul-de-sacs may exceed 300 feet in length.
(3) Separation between Units and Circulation Areas. The minimum distance between a mobile home unit and any attached accessory structure and the pavement of an internal street or parking area shall be ten feet.
(4) Sidewalks. Each mobile home park shall provide a sidewalk system to connect each mobile home space to common buildings or community facilities constructed for the use of its residents; and to the fronting public right of way. Sidewalk width shall be at least four feet.
(5) Street and Sidewalk Standards. All internal streets and sidewalks shall be hard-surfaced. Electric street lighting is required along all internal streets.
(6) Parking Requirements. Each mobile home park must provide at least two off-street parking stalls for each mobile home space.
F. Tornado Shelters. Underground or other approved tornado shelters shall be provided in the mobile home park. Such shelter or shelters shall be built according to the recommendations of the Civil Defense authority and be large enough to meet the specific needs of the park and its residents.
G. Utilities.
(1) All mobile home parks shall provide individual units and common facilities with an adequate, piped supply of hot and cold water for both drinking and domestic purposes; and standard electrical service, providing at least one 120-volt and one 240-volt electrical service outlet to each mobile home space.
(2) Complete sanitary and sewer service shall be provided within each mobile home park in accordance with this Code of Ordinances.
(3) Properly spaced and operating fire hydrants shall be provided for proper fire protection within each mobile home park in accordance with this Code of Ordinances.
(4) All electric, telephone, gas, and other utility lines shall be installed underground.
H. Financial Responsibility. Each application for a mobile home park shall include a demonstration by the developer of financial capability to complete the project, and a construction schedule.
I. Completion Schedule. Construction must begin on any approved mobile home park within one year of the date of approval by the Planning and Zoning Commission. Such construction shall be completed within two years of approval, unless otherwise extended by the Planning Commission.