RCW 70A.15.3520: Residential and commercial construction—Burning and heating device standards.

After January 1, 1992, no used solid fuel burning device shall be installed in new or existing buildings unless such device is either Oregon department of environmental quality phase II or United States environmental protection agency certified or a pellet stove either certified or exempt from certification by the United States environmental protection agency.

(1) By July 1, 1992, the state building code council shall adopt rules requiring an adequate source of heat other than woodstoves in all new and substantially remodeled residential and commercial construction. This rule shall apply (a) to areas designated by a county to be an urban growth area under chapter 36.70A RCW; and (b) to areas designated by the environmental protection agency as being in nonattainment for particulate matter.

(2) For purposes of this section, "substantially remodeled" means any alteration or restoration of a building exceeding sixty percent of the appraised value of such building within a twelve-month period.