Defense to action for injury caused by indoor air pollutants.
RCW 4.24.560
in effectIt is a defense in a civil action brought for damages for injury caused by indoor air pollutants in a residential structure on which construction was begun on or after July 1, 1991, that the builder or design professional complied in good faith, without negligence or misconduct, with: (1) Building product safety standards, including labeling; (2) Restrictions on the use of building materials known or believed to contain substances that contribute to indoor air pollution; and (3) The ventilation and radon resistive construction requirements adopted under RCW 19.27.190 .
It is a defense in a civil action brought for damages for injury caused by indoor air pollutants in a residential structure on which construction was begun on or after July 1, 1991, that the builder or design professional complied in good faith, without negligence or misconduct, with:
(1) Building product safety standards, including labeling;
(2) Restrictions on the use of building materials known or believed to contain substances that contribute to indoor air pollution; and
(3) The ventilation and radon resistive construction requirements adopted under RCW 19.27.190 .
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=4.24&full=trueFetched: 6/28/2026