Wash. Admin. Code § 162-26-100
(1) Laws requiring accessibility. The commission enforces the law against discrimination, chapter 49.60 RCW, not other state or federal laws. The commission provides the following references as guidance to places of public accommodation. The principal laws requiring that places of public accommodation be made accessible include, but are not limited to:
(2) Practices that are not unfair. It is not an unfair practice under RCW 49.60.215 to operate a place of public accommodation with structural barriers to accessibility of the person with a disability when the structural barriers:
(b) Are presently lawful under the state building code and other law outside of the law against discrimination.
This exemption does not relieve the operator of a place of public accommodation of the duty to make reasonable accommodation to the needs of disabled persons as described in WAC 162-26-080.
(3) When required by law. It is an unfair practice under RCW 49.60.215:
(4) Nonstructural changes. It is an unfair practice under RCW 49.60.215 for a person who is making nonstructural changes in a place of public accommodation to fail to eliminate barriers to same service when this can be done without substantially changing the scope or cost of the project or requiring structural changes that are not otherwise required by law. Specifically, it is an unfair practice:
[Statutory Authority: RCW 49.60.120(3). WSR 99-15-025, § 162-26-100, filed 7/12/99, effective 8/12/99. Statutory Authority: RCW 49.60.120(3) and 1997 c 271. WSR 98-08-035, § 162-26-100, filed 3/23/98, effective 4/23/98. Statutory Authority: RCW 49.60.120(3). WSR 83-02-012 (Order 43), § 162-26-100, filed 12/23/82.]