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) A licensee may act as a disclosed dual agent only with the prior informed and written consent of all parties. Consent is presumed to be informed if a party signs a completed copy of the agency disclosure form prescribed by the commission. The form shall specify the transaction in which a licensee shall serve as dual agent and shall state:
(2) that the dual agent may disclose any information gained from one party to another party if the information is relevant to the transaction, except if the information concerns:
(O) Prospective buyers of 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 and shall receive the following:
(P) The provisions of this section which are inconsistent with applicable principles of common law shall supersede the common law, and the common law may be used to aid in interpreting or clarifying the duties described in this section. Except as otherwise stated, nothing in the section precludes an injured party from bringing a cause of action against licensees, their companies, or their brokers-in-charge.
Validity, construction, and effect of real-estate brokers' multiple-listing agreement. 45 ALR3d 190.
Failure of real estate broker to disclose to principal fee-splitting agreement with adverse party, or adverse party's broker, as breach of fiduciary duty barring claim for commission. 63 ALR3d 1211.
Real-estate broker's or agent's misrepresentation to, or failure to inform, vendor regarding value of vendor's real property. 33 ALR4th 944.
Real estate broker's rights and liabilities as affected by failure to disclose financial information concerning purchaser. 34 ALR4th 191
Real-estate broker's liability to purchaser for misrepresentation or nondisclosure of physical defects in property sold. 46 ALR4th 546.
Grounds for revocation or suspension of license of real-estate broker or salesperson. 7 ALR5th 474.