(

a) No contract or offer for the sale, lease, or rental of a home water treatment device and no purchase money loan, as defined in subdivision (b), shall provide for a lien on real property. Any lien taken in violation of this

section is void and unenforceable. (

b) For the purpose of this section, “purchase money loan” means a loan or an advance under an open-end credit account if both of the following occur:

(1) The primary purpose of the loan or the primary purpose of establishing the open-end credit account is to finance all or a portion of the purchase price or any of the lease or rental payments for a water treatment device.

(2) The creditor knows the primary purpose of the loan or the primary purpose of establishing the open-end credit account when the loan is initially made or the open-end credit account is established. (

c) The creditor shall be deemed to know that the primary purpose of the loan or the primary purpose of establishing the open-end credit account is the primary purpose described in paragraph (1) of subdivision (

b) if any of the following occur:

(1) The consumer’s application for credit or any other document in the creditor’s possession before the loan is made or the open-end account is established indicates the primary purpose of the loan or the open-end credit account.

(2) The seller, lessor, or renter arranges or guarantees the loan or open-end account, or participates in the preparation of the consumer’s application for credit or other loan documents, or receives from the creditor a loan commission, brokerage, or referral fee. (

d) For the purpose of this section, “open-end credit” has the same meaning as used in

Section 226.2 of Title of the Code of Federal Regulations. (

e) This

section does not apply to mechanics liens established pursuant to

Chapter 4 (commencing with

Section 8400) of Title of Part of Division of the Civil Code.