SB5648 – Modifying the State’s limits on local jurisdictions’ ADU requirements.
Prime Sponsor – Senator Liias (D; 21st District; Lynnwood)
Current status – Referred to Housing and Local Government.
Next step would be – Scheduling a hearing.
Legislative tracking page for the bill.
HB1660 is a companion bill in the House.

Summary –
The bill would extend the date by which cities and counties would have to adopt subsection (2) of RCW 36.70A.698 from July 1, 2021 to July 1, 2024. That subsection allows them to require off-street parking for an ADU within a quarter mile of a major transit stop if they determine that the ADU is in an area that lacks access to street parking capacity, has physical space impediments, or there are other reasons supported by evidence that would make on-street parking infeasible there. (If they changed their rules about ADUs after July 1, 2021, they would have until their next comprehensive plan update to make this additional change. The bill would make the subsection take effect after July 1, 2024 in any jurisdiction that hadn’t adopted the change by then, though.)

The bill would also prohibit cities and counties from requiring owner occupancy of the principal housing or dwelling unit on a lot with an ADU unless it were being offered or used for short-term rental.”>Senator Liias (D; 42nd District; Whatcom County)
Current status – Had a hearing in the House Committee on Local Government January 12th.
Next step would be – Action by the committee.
Legislative tracking page for the bill.
HB1660 is a companion bill in the House.

Summary –
The bill would extend the date by which cities and counties would have to adopt subsection (2) of RCW 36.70A.698 from July 1, 2021 to July 1, 2024. That subsection allows them to require off-street parking for an ADU within a quarter mile of a major transit stop if they determine that the ADU is in an area that lacks access to street parking capacity, has physical space impediments, or there are other reasons supported by evidence that would make on-street parking infeasible there. (If they changed their rules about ADUs after July 1, 2021, they would have until their next comprehensive plan update to make this additional change. The bill would make the subsection take effect after July 1, 2024 in any jurisdiction that hadn’t adopted the change by then, though.)

The bill would also prohibit cities and counties from requiring owner occupancy of the principal housing or dwelling unit on a lot with an ADU unless it were being offered or used for short-term rental.