Chapter 18.06
FACTORY ASSEMBLED STRUCTURES
Sections:
18.06.010 General requirements.
18.06.020 Mobile/manufactured homes in a legally zoned mobile home park.
18.06.030 Mobile/manufactured homes in an existing mobile home park not legally zoned.
18.06.010 General requirements.
Any person desiring to place a mobile/manufactured home within the city shall conform to the following requirements:
A. Applicants shall make application to the city as required by Section 18.03.010. Every such application shall be made by the owner (or authorized agent of the owner) of the lot upon which the mobile/manufactured home is to be placed. The applicant shall conform to all regulations pertaining to the placement of a residential home on a building lot as set forth in the Shelton Municipal Code.
The following requirements pertain to any mobile/manufactured home being placed within the city:
B. The mobile/manufactured home shall be HUD certified or must display a Washington State seal of approval meeting HUD specifications.
C. All requirements of the underlying zone must be met, e.g., yard setbacks, lot coverage, off-street parking, design standards, etc.
D. Applicant must purchase all necessary state and local permits.
E. No occupancy shall be authorized until all inspections have been approved by the city of Shelton and the Department of Labor and Industries.
F. Applicant must comply with all setup requirements prior to occupancy. A violation or failure to comply with any of the provisions set forth in this chapter shall constitute a misdemeanor and is subject to Chapter 17.08. Nothing contained in this title shall prevent the city from taking such other lawful action as is necessary to prevent or remedy any violation. (Ord. 1988-0522 § 1, 2022)
18.06.020 Mobile/manufactured homes in a legally zoned mobile home park.
In addition to any other requirements set forth in this code, mobile/manufactured homes which are to be placed in a legally zoned mobile home park shall be manufactured after June 15, 1976. (Ord. 1988-0522 § 1, 2022)
18.06.030 Mobile/manufactured homes in an existing mobile home park not legally zoned.
In addition to any other requirements set forth in this code, mobile/manufactured homes which are to be placed in an existing mobile home park not legally zoned shall comply with the following:
A. Must be equal to or less than five years of age, as of the date a completed application for the building permit is received.
B. Roofs must be an integral part of the original structure and have a nominal three to twelve pitch made of materials compatible with existing housing (composition or wood type).
C. Must be comprised of at least two fully enclosed parallel sections each of not less than twelve feet wide, exclusive of porches, decks, garages or other accessory structures. (Ord. 1988-0522 § 1, 2022)
18.06.040 Mobile/manufactured homes placed in any zone that allows single-family residences as a permitted use.
In addition to any other requirements set forth in this code, mobile/manufactured homes which are to be placed in any zone that allows single-family residences as a permitted use shall comply with the following:
A. Must be equal to or less than five years of age, as of the date a completed application for the building permit is received.
B. Roofs must be an integral part of the original structure and have a nominal four to twelve pitch made of materials compatible with existing housing (composition or wood type).
C. Pit set with continuous perimeter concrete foundation as prescribed in IRC. Must be comprised of at least two fully enclosed parallel sections each of not less than twelve feet wide by thirty-six feet long, exclusive of porches, decks, garages or other accessory structures.
D. Must meet design standard requirements for zone in which installation occurs. (Ord. 1988-0522 § 1, 2022)
18.06.050 Setup requirements.
All manufactured homes shall conform to the following setup requirements. These requirements shall form the basis of compliance for footings, piers, anchorage, perimeter enclosure, crawlspace drainage, site grading, and insulation. The building department inspector shall verify compliance with each of these criteria through site inspection(s), in compliance with WAC 296-150M-0610.
A. Plumbing Requirements.
1. All manufactured homes shall be required to demonstrate water and sewer hookup availability.
2. A water shutoff valve shall be placed outside of the skirting or perimeter foundation per city of Shelton standards.
3. A sewer line cleanout shall be placed no greater than eighteen inches from outside the skirting or perimeter foundation.
4. A three- or four-inch backflow valve shall be installed per city of Shelton standards.
5. Hose bibs must be antisiphon fixtures.
B. Crawlspace Drainage. Crawlspace drainage must be installed in areas of known high seasonal water table and/or “tight” (impervious) soils. Crawlspace drainage in other areas may be omitted with prior HUD approval.
1. Alternative Drainage. When a foundation system is recessed, install four-inch diameter perforated drain line around perimeter. Connect drain line (at one percent minimum slope) to storm sewer, street curb, culvert or natural drainage area at least ten feet from the unit. Provide four inches of gravel around drain line.
2. Install a minimum of black six-mil polyethylene film in the crawlspace with minimum six-inch laps.
3. When units are located within the one-hundred-year floodplain, conformance with the most recently adopted I-Code and FEMA regulations shall be required.
C. Site Grading. Exterior grade shall be a maximum of twelve inches below the bottom of the perimeter of the unit. The ground shall slope at least six inches for ten feet around the unit. (Ord. 1988-0522 § 1, 2022)