Oregon Revised Statutes Occupations and Professions § 701.645

(1) A contract for the construction, alteration, repair, maintenance, moving or demolition of a building that is subject to the Low-Rise Residential Dwelling Code;

(2) A public contract under ORS 279.835 to 279.855 or ORS chapter 279A, 279B or 279C; or

(3) Housing in which all or part of the dwelling units are reserved for rental to persons having an income equal to or less than 80 percent of the median household income for the area as determined by the Housing and Community Services Department.