§ 154-06.01  Residence-Manufactured Housing District (R-MH).
   (A)   Purpose.  The principal purpose of the Residence-Manufactured Housing District (R-MH) is to provide for a mixture of site-built and manufactured housing in those residential areas wherein such mixture is deemed appropriate and compatible. In order to ensure visual compatibility between these housing types, and to eliminate negative perceptions which may otherwise have a negative impact upon property values, it is intended that all dwellings meet specific architectural criteria in addition to property development standards.
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983)
   (B)   Applicability and general requirements.
      (1)   The Residence-Manufactured Housing District may be applied for or initiated within existing developed areas of the city, as well as in new development areas, subject to the requirements of § 154-03.03 of this chapter.
      (2)   The Residence-Manufactured Housing District shall be the only district specified by this chapter wherein the mixture of site-built residential dwellings with manufactured housing shall be permitted. Only those dwelling units, including additions, which meet the standards and criteria specified herein, shall be permitted within the Residence-Manufactured Housing District.
      (3)   Any manufactured housing unit proposed for installation within the Residence-Manufactured Housing District shall be affixed with either of the following:
         (a)   A decal certifying that the dwelling unit has been inspected and constructed in accordance with the requirements of the United States Department of Housing and Urban Development (HUD) in effect at the date of manufacture wherein such date shall not have been prior to June 15, 1976; or
         (b)   A State of Arizona insignia of approval as defined by the A.R.S. § 41-2142, and its successors.
      (4)   The installation or construction of any dwelling unit, including any addition or modification thereto, proposed to accommodate any use as permitted herein, shall be subject to approval of a permit from the City Building Official or his or her designated representative. Such approval shall ensure that such installation, construction and occupancy shall be in accordance with all applicable building code requirements as may be specified by federal, state or local law.
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983)
   (C)   Permitted principal uses.
      (1)   One dwelling unit for single-family residency, whether site-built or manufactured, on any lot or parcel of land;
      (2)   Home occupations, subject to the performance criteria as specified in § 154-15.08 of this chapter;
      (3)   Accessory uses; any use of a building or structure which is clearly incidental to a principal use permitted in this subchapter, for purposes of private storage of household items, vehicle parking, laundry, recreational facilities or a manager’s office for multiple dwellings;
      (4)   Child day care services, small;
      (5)   Residential care facility, small;
      (6)   Nursing and personal care, small;
      (7)   Wall-mounted and concealed/disguised personal wireless communication facilities in accordance with Article 19 herein, are permitted as an accessory use for legally established nonresidential uses only. Wall strapping of a personal wireless communications facility is not permitted.
         (a)   Personal wireless communication facilities are not permitted in conjunction with legal nonconforming uses.
         (b)   The use of lattice tower structures for any personal wireless communication facility is not permitted;
      (8)   Community garden; and
      (9)   Rooming and boarding houses, (small).
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983; Ord. 2687, passed 1-4-1995; Ord. O2000-35, passed 6-21-2000; Ord. O2002-09, passed 2-20-2002; Ord. O2015-021, passed 4-15-2015; Ord. O2017-026, passed 8-16-2017)
   (D)   Permitted accessory uses.
      (1)   Accessory uses of buildings or structures customarily incidental and subordinate to any use permitted by this subchapter such as swimming pools, garages, laundry rooms and public recreation areas and structures, subject to the criteria as specified in § 154-15.15 of this chapter.
(Ord. O2020-024, passed 11-4-2020)
   (E)   Conditional uses.  Any of the following uses may be established or operated as a conditional use upon application and approval by the Planning and Zoning Commission:
      (1)   Multiple dwellings for residential occupancy, whether site-built or manufactured, subject to the lot area requirements of the High Density Residential (R-3) Zoning District as specified in § 154-15.04 of this chapter;
      (2)   Religious institutions including related buildings and activities;
      (3)   Temporary subdivision sales offices and model homes, both of which shall be subject to the following:
         (a)   All such facilities shall be located within and used exclusively for selling property within the subdivision;
         (b)   Prior to any residential occupancy of a dwelling unit used as a temporary office or model home, such dwelling shall be restored to comply with the applicable requirements of this chapter, and other city regulations governing residential occupancies; and
         (c)   A time limit shall be specified by the Planning and Zoning Commission as part of any approval granted, by which time such facilities shall be removed. Such time limit may be extended upon application and approval by the Commission.
      (4)   Child day care services, large; day care for six or more children is permitted upon compliance with the following:
(Ord. O2008-33, passed 8-6-2008)
         (a)   The seven standard criteria for reviewing conditional use applications (§ 154-03.05(G)(2));
         (b)   The facility must be licensed by the State Department of Health Services;
         (c)   There shall be no swimming pool on the site, unless the pool is in compliance with the current adopted Pool Safety Codes per the Arizona Revised Statutes;
         (d)   Any outside play area shall be enclosed by a five foot high solid wall or fence with self-latching gate;
         (e)   There shall be no structural additions or equipment not customarily found in a residential dwelling, excepting those modifications required under state licensing, building code or fire code regulations pertaining to this class of child day care service, large; and
         (f)   In granting any conditional use permit, the Planning Commission may prescribe appropriate conditions and safeguards in conformity with this chapter, including, but not limited to, setback and coverage requirements, off-street parking and screening structures and materials to hold to reasonable levels the impact of surrounding uses, and hours of operation.
      (5)   Rooming and boarding houses, (large).
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2523, passed 6-5-1991; Ord. 2687, passed 1-4-1995; Ord. O95-040, passed 9-5-1995; Ord. O2017-026, passed 8-16-2017)
   (F)   Property development standards.  In addition to the regulations and requirements contained in other sections of this chapter, the following minimum property development standards apply to all land and buildings in the Residence-Manufactured Housing District as may be designated on the official zoning map.
      (1)   Area.  Each parcel of land used for a Residence-Manufactured Housing District subdivision shall have a minimum of ten acres.
      (2)   Lot size and density.  The following is the table of minimum lot sizes and maximum densities for each of the five Residence-Manufactured Housing Districts:
Residence-Manufactured Housing Districts
Minimum Lot Size (sq. ft.)
Maximum Density
Residence-Manufactured Housing-6 (R-MH-6) District
6 du/ac
Residence-Manufactured Housing-8 (R-MH-8) District
5 du/ac
Residence-Manufactured Housing-10 (R-MH-10) District
4 du/ac
Residence-Manufactured Housing-12 (R-MH-12) District
3 du/ac
Residence-Manufactured Housing-20 (R-MH-20) District
2 du/ac
      (3)   Lot widths.  The minimum lot widths for each of the five Residence-Manufactured Housing Districts is:
         (a)   Residence-Manufactured Housing-6 (R-MH-6) District.  Fifty feet;
         (b)   Residence-Manufactured Housing-8 (R-MH-8) District.  Fifty-five feet;
         (c)   Residence-Manufactured Housing-10 (R-MH-10) District. Sixty feet;
         (d)   Residence-Manufactured Housing-12 (R-MH-12) District. Seventy-five feet;
         (e)   Residence-Manufactured Housing-20 (R-MH-20) District. One hundred feet; and
         (f)   Irregularly shaped lots.  In cases of irregularly shaped lots, the minimum width shall be measured 20 feet back from the front property line.
      (4)   Lot coverage.  The maximum lot coverage for each of the five Residence-Manufactured Housing Districts is:
         (a)   Residence-Manufactured Housing-6 (R-MH-6) District.  Thirty-five percent;
         (b)   Residence-Manufactured Housing-8 (R-MH-8) District.  Thirty-five percent;
         (c)   Residence-Manufactured Housing-10 (R-MH-10) District.  Thirty-five percent;
         (d)   Residence-Manufactured Housing-12 (R-MH-12) District.  Thirty percent; and
         (e)   Residence-Manufactured Housing-20 (R-MH-20) District.  Twenty-five percent.
      (5)   Yards.  The minimum yard setbacks for the five Residence-Manufactured Housing Districts is:
         (a)   Residence-Manufactured Housing-6, -8, -10 ((R-MH-6), (R-MH-8), (R-MH-10)) Districts.
            1.   Minimum front yard setback.  Twenty feet;
            2.   Minimum side yard setback.  Seven feet;
            3.   Minimum rear yard setback.  Twenty feet; reduced to ten feet in the R-MH-6 District; and
            4.   Minimum street side yard setback.  Ten feet.
         (b)   Residence-Manufactured Housing-12 (R-MH-12) District.
            1.   Minimum front yard setback.  Twenty-five feet;
            2.   Minimum side yard setback.  Ten feet;
            3.   Minimum rear yard setback.  Twenty feet; and
            4.   Minimum street side yard setback.  Ten feet.
         (c)   Residence-Manufactured Housing-20 (R-MH-20) District.
            1.   Minimum front yard setback.  Thirty feet;
            2.   Minimum side yard setback.  Twenty-five feet;
            3.   Minimum rear yard setback.  Twenty feet; and
            4.   Minimum street side yard setback.  Ten feet.
         (d)   Lot frontage.  Where a lot has double frontage, the required front yard shall be provided on both streets. When a lot has frontage on a street opposite from another residential zoning district, there shall be a front yard equal to the required front yard setback of the adjoining residential zoning district.
         (e)   Side yard setbacks.  Side yard setbacks shall be applied to awnings, canopies, carports and patio covers as well as to any site built or manufactured housing.
      (6)   Depth.  Each lot shall have a minimum depth of 80 feet.
      (7)   Height regulations.  No principal building shall exceed 20 feet in height and no accessory building shall exceed 15 feet in height.
      (8)   Streets.  Streets shall be designed to the standards established in Chapter 153 and shall be reviewed and approved by the City Engineer.
      (9)   Off-street parking.  Off-street parking shall be provided in the manner set forth in Article 16 of this chapter.
      (10)   Walkways.  Walks shall be provided adjacent to dedicated streets and shall be reviewed and approved by the City’s Engineer.
      (11)   Illumination.  Adequate lighting shall be provided for all streets.
      (12)   Storm drainage.  Proper surface storm drainage will be provided and the drainage plans will be reviewed and approved by the City’s Engineer.
      (13)   Utilities.  Electricity, city water and city sewer shall be provided to each lot; no aboveground utility lines shall be permitted.
      (14)   Fire hydrants.  Approved fire hydrants shall be located at intervals of 500 feet as approved by the Fire Department and the City’s Engineer.
      (15)   Recreational vehicles.  The location of recreational vehicles on a residence-manufactured housing lot shall be prohibited for human occupancy as a residence.
      (16)   Lot size in R-MH district.  Any lot legally of record within an existing R-MH district, as of November 3, 2001, which is less than the minimum 6,000 square foot lot size specified herein may be developed with one single-family residence, whether site-built or manufactured; provided, however, that this provision shall not exempt such lot from compliance with all other standards and criteria as specified herein.
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983; Ord. 2399, passed 4-20-1988; Ord. O2001-83, passed 10-3-2001; Ord. O2020-024, passed 11-4-2020)  Penalty, see § 154-999
   (G)   Exterior appearance criteria.  The installation or construction of any dwelling unit within the Residence-Manufactured Housing District, whether site-built or manufactured, shall comply with the following minimum criteria.
      (1)   Width of dwelling unit.  The minimum horizontal dimension of the dwelling unit as measured from outside faces of exterior walls shall be 24 feet.
      (2)   Roof treatment.
         (a)   The roof shall be designed to achieve either a slope measuring not less than three feet vertical rise for each 12 feet horizontal run, or have a roof parapet, mansard shape or other similar roofline treatment which screens the roof from any street view. Rounded roof surfaces shall be prohibited.
         (b)   In the event that the minimum slope is provided, the roof shall be covered with a roofing material commonly used in site-built residential construction, other than metal. For any minimum slope roof or greater, an overhang of 16 inches or greater shall also be provided as an integral part of the roof structure.
      (3)   Exterior building materials.  The exterior building facade including the trim, doors, windows, roof fascias and the like, shall consist of wood, stucco, horizontal siding, brick, masonry veneer or other facsimile of a building material commonly used in site-built residential construction; provided, however, that metal siding, other than aluminum lap siding, shall be prohibited. Patio covers and detached storage buildings shall be exempt from this requirement.
      (4)   Installation.  The dwelling unit shall be set upon a permanent foundation or footing for the purpose of a permanent installation. Such installation shall render the dwelling no more portable than if it were constructed totally on site.
         (a)   The dwelling unit shall be permanently set upon the foundation wherein the exterior facade material of the dwelling shall be extended to a level not greater than six inches above the adjacent ground level within three feet of the building line.
         (b)   All exterior walls shall be solid and continuous to ground level.
      (5)   Running gear.  Any device used to transport a dwelling to the site of installation, including the hitch, wheels, axles or other devices used primarily for transport other than the chassis, shall be detached from the dwelling as part of the installation procedure.
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983; Ord. O2020-024, passed 11-4-2020)  Penalty, see § 154-999
   (H)   Plans submittal.  Any application for a permit for installing, constructing or adding onto any dwelling unit within the Residence-Manufactured Housing District, shall be accompanied by a site plan and building elevations for review by the Department of Development Services to determine compliance with the requirements of this subchapter.
      (1)   The site plan required shall be drawn to scale with complete dimensions of the lot or parcel upon which the dwelling is to be installed or constructed, dimensions of the dwelling on the property, the finished floor level and all setbacks from the property lines.
      (2)   The building elevations required shall illustrate the style of facade for the dwelling unit and any attached accessory structures as viewed from all four directions, and the type of building materials used for the exterior finish of walls, roof and the trim. The exterior elevation plans shall be sufficiently detailed to illustrate conformance with the required roof slopes, roofline treatments, overhangs and building height.
('80 Code, App. A, § 74)  (Ord. 583, passed 9-16-1952; Ord. 2109, passed 2-2-1983; Ord. O2010-32, passed 7-7-2010; Ord. O2010-63, passed 12-1-2010)