21.08.320 Designated Manufactured Homes, Manufactured Homes, and Mobile Homes

21.08.320 Designated Manufactured Homes, Manufactured Homes, and Mobile Homes.

A. Purpose. The purpose of regulations related to designated manufactured homes, manufactured homes, and mobile homes is to allow for opportunities for reduced building and infrastructure costs for households interested in affordable housing options.

B. Applicability. Designated manufactured homes may be sited on individual residential lots in the same manner to the same manner and to the same extent as a detached single-family dwelling unit.
Manufactured homes and mobile homes may be sited only within manufactured home parks or mobile home parks. Manufactured home parks and mobile home parks are allowed through the subdivision and binding site plan processes in zones RA-5 through R-18.

C. Requirements for Designated Manufactured Homes. Designated manufactured homes must be attached to a foundation in accordance with state regulations. Designated manufactured homes shall be subject to all of the land use, density, site requirements and development standards of the underlying zone.

D. Requirements for Manufactured Home Parks and Mobile Home Parks. New manufactured home parks and mobile home parks are subject to all of the land use, density, site requirements and development standards of the underlying zone with the following exceptions:

1. Size. A manufactured home park or mobile home park shall be at least three acres in area.

2. Allowed Uses. A manufactured home park or mobile home park may include either mobile or manufactured housing provided that the mobile homes meet the minimum livability and safety requirements set forth in the Redmond Building Code. A manufactured home park or mobile home park may also include: an office for the use of a manager, a common laundry facility for use of the tenants, a common recreation facility for primary use of the tenants, a common storage area, or an on-site day care facility.

3. Separation. A minimum of ten feet of separation shall be maintained between all units which shall include modular or site built additions, decks, porches or roof structures excluding decks, patios, or walkways less than 30 inches above grade. Exceptions may be made to allow carports constructed of nonflammable materials, in which case the minimum separation shall be five feet from that carport to the neighboring unit. Accessory structures shall maintain the following separations:

a. Ten feet to mobile homes or manufactured homes on adjacent spaces;

b. Five feet to accessory structures of mobile homes or manufactured homes on adjacent spaces;

c. Five feet to the mobile home, manufactured home, or other accessory structures on the same space, except for a carport or garage which may be attached to the mobile home or manufactured home; this separation may be waived when accessory structures are constructed of nonflammable materials.

4. Coverage/Impervious Surface Area. A manufactured home park or mobile home park shall be exempt from the structure coverage and impervious surface area requirements set forth in the zone summary for the applicable residential zone. (See RZC 21.08.020 through 21.08.140.)

5. Parking. Two spaces per unit shall be required. At least one of the spaces shall be off-street parking and shall be located on or adjacent to each mobile home or manufactured home pad.

6. Screening. A manufactured home park or mobile home park shall have site screening compliant with RZC 21.32, Landscaping, and may include fencing, so that the manufactured home park or mobile home park is visually separated from surrounding residential uses.

a. Internal roads and sidewalks shall provide access to each mobile home or manufactured home space and shall be constructed in accordance with the adopted City of Redmond road standards for residential local access streets or private streets.

b. Private streets may be used provided that such streets do not directly connect two or more points of vehicular access to the park, provided that no roadway shall exceed 150 feet in length without providing a fire vehicle turnaround area, and provided that the roadway is not intended to accommodate required parking.

c. Driveways must be spaced to maximize the distance between one driveway and another and between driveways and road intersections. Driveways shall be aligned wherever possible with existing driveways on the opposite side of the street. Joint use of driveways is allowed.

d. Skirting and foundations. All mobile homes supported by piers shall be fully skirted. All manufactured homes must be attached to a foundation in accordance with state regulations.

e. Recreational Vehicles. No spaces or pads in a manufactured home park or mobile home park may be used to accommodate recreational vehicles. A manufactured home park or mobile home park may include a storage area for recreational vehicles owned by the residents of the park provided the storage area contains no utility hook-ups and recreational vehicles within the storage area are not used as living quarters.

1. Standards. Mobile home parks established prior to the effective date of this code shall continue to be governed by all standards relating to density, setbacks, landscaping and off-street parking in effect at the time they were approved.

2. New Structures. The replacement of mobile homes in existing mobile home parks shall be governed by the site requirements in effect when the parks were approved. Where internal setbacks are not specified, the average of the prevailing setbacks on the pads to either side of the proposed new or replacement structure shall apply. New accessory structures must meet the setback requirements of conforming mobile parks unless the existing setbacks create an inability to meet these standards in which case the accessory structure shall be made of a fireproof material. Replacement mobile homes in nonconforming mobile home parks must be fully secured to the ground as required by the Redmond Building Code, fully skirted, and the structure must meet the minimum livability and safety requirements of the Redmond Building Code.

3. Recreational Vehicles. No spaces or pads in an existing mobile home park shall be used to accommodate recreational vehicles except where the spaces or pads were specifically for recreational vehicles at the time the park was established.

4. Enlargement. A nonconforming mobile home park may be enlarged provided the proposed enlargement meets the standards set forth for new mobile home parks in this section.