S.C. Code Ann. § 40-57-137
(A) A real estate brokerage company that provides services through an agency agreement for a client is bound by the duties of loyalty, obedience, disclosure, confidentiality, reasonable care, diligence, and accounting as set forth in this chapter. The following are the permissible agency relationships a licensee may establish:
(B) The broker-in-charge of a real estate brokerage company shall adopt a written company policy that identifies and describes the types of real estate brokerage agency relationships in which associated licensees may engage. The written policy shall include:
(C) On reaching a written agreement to provide brokerage services for a seller of real estate, a seller's agent shall:
(2) in accordance with subsection (A), promote the interest of the seller by performing agency duties which include:
(6) preserve confidential information provided by the seller during the course of and following the agency relationship that might have a negative impact on the seller's real estate activity unless:
(c) disclosure is necessary to defend the licensee against an accusation of wrongful conduct in a proceeding before the commission or before a professional association or professional standards committee.
No cause of action may arise against a licensee for disclosing confidential information in compliance with subsection (C)(6)(a), (b), or (c).
(H) On reaching a written agreement to provide brokerage services to a potential buyer of real estate, a buyer's agent shall:
(2) in accordance with subsection (A), promote the interest of the buyer by performing the buyer's agent's duties which include:
(6) preserving confidential information provided by the buyer during the course of or following the agency relationship that might have a negative impact on the buyer's real estate activity unless:
(c) disclosure is necessary to defend the licensee against an accusation of wrongful conduct in a proceeding before the commission or before a professional association or professional standards committee.
No cause of action may arise against a licensee for disclosing confidential information in compliance with subsections (H)(6)(a), (b), or (c).
(M)
(1) A licensee may act as a disclosed dual agent only with the prior informed and written consent of all parties. The informed consent must be evidenced by a dual agency agreement, promulgated by the commission, and must be signed by the buyer before writing an offer and by the seller before signing the sales contract. The agreement must specify the transaction in which a licensee is serving as dual agent and must state that:
(b) the dual agent may disclose information gained from one party to another party if the information is relevant to the transaction, except if the information concerns:
(O)
(1) Prospective buyers and sellers of unlisted real estate who do not choose to establish an agency relationship with a licensee but who use the services of the licensee are considered customers. A licensee may offer the following services to a customer including, but not limited to:
(2) A licensee offering services to a customer shall:
(P)