Before a leased or rented residence is weatherized, written permission shall be obtained from the owner of the residence for the weatherization. The department shall adopt rules to ensure that: (1) The benefits of weatherization assistance, including utility bill reduction and preservation of affordable housing stock, accrue primarily to low-income tenants occupying a leased or rented residence; (2) as a result of weatherization provided under this chapter, the rent on the residence is not increased and the tenant is not evicted; and (3) as a result of weatherization provided under this chapter, no undue or excessive enhancement occurs in the value of the residence. This section is in the public interest and any violation by a landlord of the rules adopted under this section shall be an act in trade or commerce violating chapter
19.86 RCW, the consumer protection act.