A.   The purposes of the PD-4 Zone include the following:

      1.   To provide flexibility in the City's zoning scheme in order to allow for a unique, innovative and well planned development;

      2.   To allow appropriate high density residential development near or adjacent to Highway 89; and

      3.   To implement the Mapleton Heights Annexation and Development Agreement. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

The overall residential density in the PD-4 Zone shall not exceed two hundred eighty five (285) dwelling units not counting accessory apartments permitted by this chapter. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

In addition to the specific development standards contained in this chapter, areas zoned PD-4 shall comply with section 17.04.130, "Availability Of Adequate Public Facilities", of this Code. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

The following uses shall be permitted in the PD-4 Zone:

Customary residential household pets as defined in section 18.08.010 of this title.

Home occupations, subject to the provisions of section 18.84.380 of this title.

Keeping of animals on lots without animal rights subject to the provisions of section 18.84.240 of this title.

Public facilities.

Residential facilities for elderly persons subject to the provisions of section 18.84.370 of this title.

Residential facilities for persons with a disability subject to the provisions of section 18.84.370 of this title.

Single-family residential dwelling unit.

Temporary fruit and vegetable stands, for the sale of produce raised on the premises, that shall not exceed one hundred (100) square feet; are maintained in an orderly manner.

The following standards only apply to lots greater than twenty thousand (20,000) square feet: The raising, care and keeping of limited numbers of livestock and fowl excluding swine for family food production or recreation. Also barns, corrals, pens and coops and other structures for the care and keeping of domestic livestock and fowl, subject to the following:

   A.   The number of animals kept shall not exceed one animal unit for each twenty thousand (20,000) square feet of a lot. No livestock or fowl shall be kept on any lot containing less than twenty thousand (20,000) square feet.

   B.   No structure for the housing of livestock or fowl or corrals for the close confinement of livestock shall be located closer than one hundred feet (100') to an existing dwelling on an adjacent lot or fifty feet (50') to such a dwelling on the same lot. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

Accessory uses and structures are permitted in the PD-4 Zone, provided they are incidental to the main residential dwelling unit, and do not substantially alter the character of the permitted principal use or structure. Such permitted accessory uses and structures include, but are not limited to, the following:

Accessory apartments are subject to the provisions of section 18.84.410 of this title.

Accessory buildings such as barns, garages, carports, greenhouses, gardening sheds, recreation rooms, and similar structures which are customarily used in conjunction with and are incidental to a principal use or structure and in accordance with section 18.26.020 of this title and the following:

   A.   Accessory structures on lots with less than twenty thousand (20,000) square feet shall be limited to a footprint size that is no greater than the main structure, with a height no taller than the main structure.

   B.   For lots greater than twenty thousand (20,000) square feet, the maximum size on any accessory building, barn, garage or otherwise, shall be limited to no more than one hundred twenty five percent (125%) of the footprint of the main dwelling.

Swimming pools and incidental cabanas subject to any and all requirements of the International Building Code (IBC). (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

The following is a list of conditional uses. Such uses may be approved by issuance of a conditional use permit from the Planning Commission. Uses not specified herein as "permitted" or "conditional" shall be considered prohibited.

Places of worship.

Private schools.

Utility facilities. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

For the purpose of this chapter, the detached residential lots are separated into three (3) different districts, according to the Mapleton Heights conceptual plan, each with unique requirements. These areas are defined by geographical area as shown in the Mapleton Heights Annexation and Development Agreement.

   A.   Ranch Estate lot requirements:

      1.   Minimum Area: Forty three thousand five hundred sixty (43,560) square feet.

      2.   Minimum Frontage: One hundred feet (100'). Cul-de-sac lots and lots on bulbs shall have the minimum frontage measured at the front yard setback line.

      3.   Minimum Depth: One hundred feet (100').

   B.   Hillside Estate lot requirements:

      1.   Minimum Area: Nine thousand (9,000) square feet.

      2.   Minimum Frontage: Seventy feet (70'). Cul-de-sac lots and lots on bulbs shall have the minimum frontage measured at the front yard setback line.

      3.   Minimum Depth: One hundred feet (100').

   C.   Estate lot requirements:

      1.   Minimum Area: Six thousand (6,000) square feet.

      2.   Minimum Frontage: Fifty five feet (55'). Cul-de-sac lots and lots on bulbs shall have the minimum frontage measured at the front yard setback line.

      3.   Minimum Depth: Seventy five feet (75'). (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

   A.   Ranch Estate lot setbacks:

      1.   All structures shall maintain a front yard setback of no less than twenty five feet (25') measured from the property line to the foundation of the main structure. If the garage doors face the street, the garage, whether attached or detached, shall be setback at least thirty feet (30') from the front property line and at least twenty feet (20') from the back of sidewalk. For corner lots, both street frontages must comply with the front yard setback.

      2.   The main structure shall maintain a rear yard setback of no less than twenty five feet (25') measured from the rear property line to the foundation of the main building. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

      3.   The main structure shall maintain a side yard setback of no less than ten feet (10') measured from the property line to the foundation of the structure. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

   B.   Hillside Estate lot setbacks:

      1.   All structures shall maintain a front yard setback of no less than twenty feet (20') measured from the property line to the foundation of the main structure. If the garage doors face the street, the garage, whether attached or detached, shall be setback at least twenty five feet (25') from the front property line and at least twenty feet (20') from the back of sidewalk. For corner lots, both street frontages must comply with the front yard setback.

      2.   The main structure shall maintain a rear yard setback of no less than twenty feet (20') measured from the rear property line to the foundation of the main building. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

      3.   The main structure shall maintain a side yard setback of no less than ten feet (10') measured from the property line to the foundation of the structure. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

   C.   Estate lot setbacks:

      1.   All structures shall maintain a front yard setback of no less than fifteen feet (15') measured from the property line to the foundation of the main structure. If the garage doors face the street, the garage, whether attached or detached, shall be setback at least twenty feet (20') from the front property line and at least twenty feet (20') from the back of sidewalk. For corner lots, both street frontages must comply with the front yard setback.

      2.   The main structure shall maintain a rear yard setback of no less than twenty feet (20') measured from the rear property line to the foundation of the main building. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

      3.   The main structure shall maintain a side yard setback of no less than five feet (5') measured from the property line to the foundation of the structure. Detached accessory buildings may be constructed in accordance with section 18.26.020 of this title.

   D.   The following structures or features may be erected on or projected into any required yard:

      1.   Fences and walls in conformance with this Code and approval by the Planning and Zoning Director. Other City codes or ordinances also apply.

      2.   Landscape elements including trees, shrubs, agricultural crops, and other plants.

      3.   Necessary appurtenances for utility service.

      4.   The structures listed below may project into a minimum front or rear yard not more than four feet (4'), and into a minimum side yard not more than two feet (2'):

         a.   Cornices, eaves, belt courses, sills, buttresses, or other similar architectural features.

         b.   Fireplace structures and bays, provided that they are not wider than eight feet (8') measured generally parallel to the wall of which they are a part.

         c.   Stairways, balconies, door stoops, fire escapes, awnings, and planter boxes or masonry planters not exceeding twenty four inches (24") in height.

         d.   Porte-cochere over a driveway in a side yard, providing such structure is not more than one story in height and twenty four feet (24') in length, and is entirely open on at least three (3) sides except for necessary supporting columns and customary architectural features. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

Nothing in this chapter shall be construed to preclude Mapleton City from setting additional setback requirements, or requiring inclusion of liability disclaimers associated with physical hazards of a geologic nature. Such additional requirements are to be part of any final plat or development agreement. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

No lot or parcel of land in the PD-4 Zone shall have a building or structure which exceeds a height of two (2) stories with a maximum of forty feet (40') as defined in section 18.08.010 of this title. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

All landscaping shall conform to the requirements found in chapter 18.90 of this title. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

Design elements including, but not limited to, street width, curb radii, drainage facilities, sidewalks, curb and gutter, fencing, and block standards shall conform to the Mapleton Heights concept plan and Mapleton City standards. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

Per the Mapleton Heights Annexation and Development Agreement, the developer shall dedicate a trail head park to the City consistent with the project concept plan. Any and all other parks, retention basins, play fields, inter-block walkways, and protected natural areas shall be maintained by the homeowners' association or the property owner of the property on which the open space is located. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)

If the City deems that open space and parks maintained by homeowners' associations are not being kept to Mapleton City standards, the City shall have the right to cause such improvements and maintenance to be done and any such expenses by the City shall be assessed to any of the homeowners' associations of the PD-4 Zone. In the event of the dissolution or inactivity of any homeowners' associations in the PD-4 Zone, Mapleton City shall have the right to assume title of the open space and parks, and the City shall then charge the individual property owners within the applicable areas for the improvements, maintenance, and administrative fees required for the above mentioned open space and parks. (Ord. 2015-03, 8-5-2015, eff. 9-7-2015)