Oregon Revised Statutes Public Health and Safety § 446.095

(1) Construct well-drained and hard-surfaced park streets at least 20 feet in width, unobstructed and open to traffic within the mobile home or manufactured dwelling park. If the owner or operator permits parking of motor vehicles on the park streets, the owner or operator shall construct the park streets at least 30 feet in width.

(2) Provide to each tenant an adequate supply of healthful water and adequate electric power and sewerage facilities. All plumbing shall be installed in compliance with ORS 447.010 to 447.156 and 447.992 and the rules of the Department of Consumer and Business Services adopted thereunder.

(3) Provide, except as specified in subsection (4) of this section, a separate general play area restricted to that use, if the mobile home or manufactured dwelling park accommodates children who are under 14 years of age. No separate play area shall be less than 2,500 square feet in area. At least 100 square feet of play area shall be provided for each manufactured dwelling occupied by children.

(4) Not be required to provide a separate play area if the mobile home or manufactured dwelling park was in existence before March 13, 1989, and rented spaces as an all adult park.