SB6231 – Extends the remodeling property tax exemption to adding an ADU.
Prime Sponsor – Senator Kuderer (D; 48th District; Bellevue)
Current status – Referred to the Governor for signature.
In the Senate – (Passed)
Had a hearing in the Senate Committee on Housing Stability & Affordability January 15th. A substitute passed out of committee January 27th; referred to Ways and Means. Had a hearing in Ways and Means on February 20th; amended and voted out of committee March 2nd. Referred to Rules. Passed by the Senate March 11th.

In the House – (Passed)
Referred to the House and passed March 12th.
Next step would be – Signature by the Governor,
Legislative tracking page for the bill.
There’s a Senate Bill Report.

Comments –
Rather than adding ADUs to the improvements that can currently qualify for a tax exemption, the substitute narrows the exemption so it only applies to building ADUs. The amendment in Ways and Means returns to the original provision about improvements, and adds a report to the Legislature on the effectiveness of the measure.

Summary –
Currently, physical improvements to single family residences that add less than 30% to the value of the building are exempt from property taxes for three years. The bill extends this exemption to the construction of an ADU.