Wash. Admin. Code § 458-16-282
(2) Definitions. For purposes of this section, the following definitions apply:
(3) Exemption. All real and personal property owned by or leased to a nonprofit organization, association, or corporation engaged in the production and performance of musical, dance, artistic, dramatic, or literary works for the benefit of the general public and not for profit will be exempt from taxation under the following conditions:
(c) The organization, association, or corporation organized and operated for musical, dance, artistic, dramatic, literary, or educational purposes must receive a substantial portion of its income from a governmental entity or from direct or indirect contributions of money, real or personal property, or services from the general public. Admission or entrance fees derived from producing or performing musical, dance, artistic, dramatic, literary, or educational works will not be included within the figures used to calculate "a substantial part" of the organization's, association's or corporation's income.
(4) Exemption for property under construction or soon to be used for an exempt purpose. Property that is being constructed, remodeled, or otherwise prepared to be used by organizations, associations, or corporations engaged in the production and performance of musical, dance, artistic, dramatic, literary, or educational works, may qualify for exemption under certain circumstances. A nonprofit organization, association, or corporation seeking an exemption for property not currently being used for an exempt purpose, may qualify if the property will be used for an exempt purpose within a reasonable period of time and proof is submitted that a reasonably specific and active program is being carried out to enable the property to be used by organizations, associations, or corporations engaged in the production and performance of musical, dance, artistic, dramatic, literary, or educational works.
(a) Acceptable proof of a specific and active building or remodeling program must include, but is not limited to, the following items:
[Statutory Authority: RCW 84.08.010, 84.08.070, 84.08.080, 84.36.389, and 84.36.865. WSR 15-07-021, § 458-16-282, filed 3/10/15, effective 4/10/15. Statutory Authority: RCW 84.08.070, 84.34.141, 84.36.865, 84.52.0502. WSR 09-19-010, § 458-16-282, filed 9/3/09, effective 10/4/09. Statutory Authority: RCW 84.36.865 and 84.36.060. WSR 99-18-008, § 458-16-282, filed 8/19/99, effective 9/19/99. Statutory Authority: RCW 84.08.010, 84.08.070 and chapter 84.36 RCW. WSR 94-07-008, § 458-16-282, filed 3/3/94, effective 4/3/94. Statutory Authority: RCW 84.36.865. WSR 86-12-034 (Order PT 86-2), § 458-16-282, filed 5/30/86; WSR 85-05-025 (Order PT 85-1), § 458-16-282, filed 2/15/85; WSR 81-21-010 (Order PT 81-14), § 458-16-282, filed 10/8/81.]