Requires the landlord to give the tenants in mobile home parks or manufactured housing communities two years' notice in advance of the effective date of a closure or conversion.

Provides that the two-year closure notice requirement does not apply under certain conditions.

Requires a tenant who sells a mobile home, manufactured home, or park model within a park to provide the buyer with a copy of any closure notice provided by a landlord, as required under RCW 59.20.080, at least seven days in advance of the intended sale and transfer.