Section 197.478 - Siting of manufactured homes and prefabricated structures within urban growth boundaries(1) Notwithstanding any other provision in ORS chapter 197A, within an urban growth boundary, a local government shall allow the siting of manufactured homes and prefabricated structures on all land zoned to allow the development of single-family dwellings.(2) This section does not apply to any area designated in an acknowledged comprehensive plan or land use regulation as a historic district or residential land immediately adjacent to a historic landmark.(3) Manufactured homes and prefabricated structures allowed under this section are in addition to manufactured dwellings or prefabricated structures allowed within designated manufactured dwelling subdivisions.(4) A local government may not subject manufactured homes or prefabricated structures within an urban growth boundary, or the land upon which the homes or structures are sited, to any applicable standard that would not apply to a detached, site-built single-family dwelling on the same land, except: (a) As necessary to comply with a protective measure adopted pursuant to a statewide land use planning goal; or(b) To require that the manufacturer certify that the manufactured home or prefabricated structure has an exterior thermal envelope meeting performance standards which reduce levels equivalent to the performance standards required of single-family dwellings constructed under the Low-Rise Residential Dwelling Code as defined in ORS 455.010.(5) Within any residential zone inside an urban growth boundary where a manufactured dwelling park is otherwise allowed, a city or county may not adopt a minimum lot size for a manufactured dwelling park that is larger than one acre.(6) This section may not be construed as abrogating a recorded restrictive covenant.