The Single-Wide Mobile Home overlay (SW) zone is intended to allow placement of single-wide mobile homes on individual lots, only in subdivisions which were platted prior to 1975, were developed specifically to allow mobile homes, and where single-wide mobile homes comprise at least twenty (20) percent of the current housing units.

A SW zone may be established in conjunction with any zone. All conditions, standards and restrictions of the underlying zone shall apply. An approved SW zone shall be designated on the zoning map with the symbol "S.W." Each SW zone shall have a contiguous area of not less than one (1) acre.

A single-wide mobile home may be placed on an individual lot in a SW zone as an outright permitted use, subject to the following provisions:

1. A mobile home placement permit must be obtained prior to the placement of the home on the lot;
2. The home must bear a seal certifying that it is built in compliance with the Federal Manufacturing Housing Construction and Safety Standards and Safety Standards Code, effective June 15, 1976;
3. The home must be completely enclosed with skirting of a non-decaying and corrosion-resistant material extending to ground level;
4. The home must have a minimum of six hundred (600) square feet of occupied space in a single, double, expando or multi-section unit (including those with add-a-room units); and
5. All manufactured homes shall be placed on a permanent foundation and shall be anchored to resist flotation, collapse and lateral movement by providing tie downs and anchoring as specified in OAR 814-23-065, and shall meet FEMA placement requirements.