(1) Weatherizing agencies shall provide weatherization services to eligible low-income households in accordance with the "Washington state low-income weatherization assistance program procedures and guidelines" established by the department.

(2) No contribution may be required from the eligible household.

(3) Full levels of all cost-effective structurally feasible measures, as determined by the department, shall be installed when a residence is weatherized.

(4) No undue or excessive enhancement to a residence shall occur as a result of weatherization provided under this chapter.

(5) Before a leased or rented residence is weatherized, the department's "property owner/agency weatherization agreement" form, or subsequent special conditions established by the department when necessary to comply with applicable state or federal law, must be signed by the owner of the building or the owner's authorized agent. Through this form the landlord ensures that, at a minimum, during a period extending through one year following the date of completion of the weatherization work, the amount of rent will not be raised for any reason and during the period extending through three years following the date of completion of the weatherization work performed, rent will not be increased, nor the tenant evicted, as a result of the weatherization provided.

(6) Benefits of weatherization work performed on behalf of a low-income tenant shall accrue primarily to the low-income tenant.