This section modifies existing section 84.36.400. Here is the modified chapter for context.
Physical improvements to single-family dwellings upon real propertyare exempt from taxation as follows:
Any physical improvement is exempt for the three assessment years after the completion of the improvement to the extent that the improvement represents 30 percent or less of the value of the original structure; and
An accessory dwelling unit, whether attached to or within the single-family dwelling or as a detached unit on the same real property, to the extent that the improvement represents 30 percent or less of the value of the original structure, is exempt from taxation for :
The three assessment years subsequent to the completion of the improvement ; and
The duration of time that the accessory dwelling unit is rented to a low-income household as defined in RCW 36.70A.030 that is verified by the city or the county where the real property resides.
If the exemption is being sought for a planned improvement, a taxpayer desiring to obtain the exemption granted by this section must file notice of his or her intention to construct the improvement prior to the improvement being made on forms prescribed by the department of revenue and furnished to the taxpayer by the county assessor: PROVIDED, That this exemption cannot be claimed more than once in a five-year period.
The department of revenue shall promulgate such rules and regulations as are necessary and convenient to properly administer the provisions of this section**, including necessary verification and monitoring requirements, by December 31, 2022**.
The provisions of RCW 82.32.805 and 82.32.808 do not apply to this act.
This act applies to taxes levied for collection in 2023 and thereafter.