Do I still have to follow Tacoma, Seattle, or other local rent in increase laws, or just the new state rent increase law?

Both. Local rent increase laws still apply. Note that if state and local law allow a different rent increase, the landlord can only increase by the lower amount.

The City of Tacoma is considering a bill that would roll back some local landlord-tenant laws, including the two rent increase notices currently required in addition to the state rent increase notice. The Tacoma proposal has not been enacted at the time of this FAQ posting.