Single agency in real estate is a brokerage relationship where your agent represents only one side of the transaction — you — and owes you the full set of fiduciary duties the law recognizes. If you’re the seller, a single agent works to get you the best price and terms. If you’re the buyer, a single agent works for your interests throughout the deal. No one else in the transaction gets the agent’s loyalty, confidentiality, or advocacy. That exclusivity is the whole point, and it’s what separates single agency from the lesser arrangements an agent could offer you instead.
How Single Agency Compares to Dual Agency and Transaction Brokers
A seller’s agent is hired by and represents the seller. A buyer’s agent is hired by the buyer and works in the buyer’s best interest.1National Association of REALTORS®. Vocabulary: Agency and Agency Relationships Neither can simultaneously advocate for the other side. That’s single agency.
A dual agent represents both the buyer and the seller in the same transaction. The buyer wants the lowest price, the seller wants the highest, and one person is supposed to serve both goals. Dual agents owe limited fiduciary duties to both parties, and all sides must give informed written consent before the arrangement can proceed.1National Association of REALTORS®. Vocabulary: Agency and Agency Relationships Roughly eight states ban dual agency entirely because of the conflict baked into it.
A transaction broker, sometimes called a facilitator, sits in a middle ground. The transaction broker helps both parties complete the deal but represents neither in a fiduciary capacity. The duties are narrower: deal honestly and fairly, disclose known facts, account for funds, and use reasonable skill. The broker owes no loyalty to either party and provides only limited confidentiality. Moving from single agency to a transaction broker arrangement means giving up undivided loyalty and full strategic advice.
The Six Fiduciary Duties You Get From a Single Agent
Single agency carries the highest level of obligation an agent can owe you. These duties are rooted in common law and codified in some form by every state’s real estate licensing statute. Agents typically learn them through the mnemonic OLDCAR.
- Obedience. Your agent must follow your lawful instructions. If you set a floor price, the agent can’t quietly encourage a lower offer. The qualifier matters: an agent cannot help you hide a known defect or violate fair housing laws, even if you ask.
- Loyalty. The agent must act solely in your best interest, to the exclusion of everyone else’s, including their own. This is the duty that prohibits self-dealing.
- Disclosure. Your agent must reveal every material fact that could affect your decisions. For sellers, that includes competing offers or market shifts. For buyers, it means flagging known property defects or title issues the agent learns about.
- Confidentiality. Sensitive information you share — your bottom line, your urgency, your maximum budget — stays protected. The agent cannot leak it to the other side, and this duty survives the end of the relationship.
- Accounting. Every dollar passing through the agent’s hands — earnest money, closing funds, repair credits — has to be tracked and properly handled. Commingling client funds with the brokerage’s operating account is one of the fastest routes to a lost license.
- Reasonable care. Your agent must apply genuine professional skill. Sloppy contract drafting, missed deadlines, or failure to research comparable sales all fall short.
The NAR Code of Ethics reinforces these obligations for its members. Article 1 says that when representing a client as an agent, Realtors pledge to protect and promote that client’s interests as a primary obligation.2National Association of REALTORS®. 2026 Code of Ethics and Standards of Practice That phrase — “primary obligation” — is what separates single agency from every lesser arrangement.
Self-Dealing: Where the Loyalty Duty Gets Tested
The duty of loyalty sounds straightforward until money is on the table. Self-dealing is the most common way agents violate it, and it happens whenever an agent, their spouse, their business entity, or a close associate enters into a transaction with the agent’s own client. The classic example: a listing agent’s LLC buys the property the agent was hired to sell, and the seller never learns the agent was on both sides.
Under the NAR Code of Ethics, Realtors cannot acquire an interest in a client’s property without making their true position known to the owner in writing. The same rule applies in reverse — an agent selling property they own must disclose that ownership to any prospective buyer.2National Association of REALTORS®. 2026 Code of Ethics and Standards of Practice An agent also cannot use your confidential information against you in a self-dealing transaction. If you shared your rock-bottom price, they can’t turn around and use that number to buy your property at a discount through a family member.
Courts have found that agents who join purchasing entities on their own listings breach their fiduciary duty outright, effectively abandoning their role as advocate and becoming the client’s competitor. Penalties can include forfeited commissions, civil liability for the difference between what the client accepted and what the property was actually worth, and state licensing board action up to suspension or revocation.
The Disclosure You Should Receive Before Anything Else
Before an agent can act as your single agent, they must give you a written disclosure identifying the relationship and the duties they owe you. Timing matters. Most states require this at the first substantive contact, meaning the point where the agent starts providing specific assistance or asking for information that could compromise your bargaining position. General conversation about the market doesn’t trigger the requirement. The moment the agent asks about your motivation to sell, your maximum budget, or your flexibility on price, the clock starts.
The disclosure must clearly identify the type of brokerage relationship being offered and list the specific duties the agent will perform. Many states require it in a conspicuous format — larger or bolder type than the surrounding text — so it won’t be buried in a stack of paperwork. You sign it, and the signed copy gets attached to any offer or agreement that follows.
If an agent skips this step or delays it past the deadline, consequences vary by state but can include voiding the representation agreement and administrative fines against the brokerage. Regulators check these forms during audits, and a missing disclosure is one of the easiest violations to prove. If an agent starts asking detailed questions about your finances or negotiating position before handing you a disclosure form, treat that as a warning.
The Written Buyer Agreement Requirement
Since August 17, 2024, a practice change from the NAR settlement has reshaped how buyer agency starts. If you’re working with an agent who belongs to a Realtor association participating in the settlement, they must enter into a written buyer agreement with you before you can tour a home, whether in person or virtually.3National Association of REALTORS®. Consumer Guide to Written Buyer Agreements Casual weeks of looking before deciding to formalize anything are no longer how this works.
The agreement must clearly define what the agent will be paid. That compensation cannot be open-ended or stated as a range. It needs to be a specific dollar amount, flat fee, percentage, or hourly rate.3National Association of REALTORS®. Consumer Guide to Written Buyer Agreements The transparency requirement exists because the settlement also prohibited offers of buyer agent compensation from appearing on Multiple Listing Services. Sellers can still offer compensation to buyer agents, but those offers now happen off the MLS through direct negotiation.4National Association of REALTORS®. National Association of Realtors Provides Final Reminder of August 17 NAR Practice Change Implementation
For buyers, this means knowing exactly what your agent’s services will cost before you start touring. If a seller isn’t offering compensation and your agreement says the agent earns 2.5%, that money comes from somewhere, possibly out of your pocket at closing or folded into your offer price. Read the compensation clause carefully before signing.
What Goes Into a Single Agency Agreement
Whether you’re signing a listing agreement as a seller or a buyer representation agreement, a few elements have to be there for the document to hold up.
- Legal names. All property owners or intended buyers, exactly as they appear on government identification or title documents.
- Property description. For sellers, the legal description from a recent tax bill or deed. For buyers, the geographic area and property types the agent will focus on.
- Duration. Specific start and end dates. Most listing agreements run three to six months, though this is negotiable.
- Compensation. The agent’s fee as a percentage of sale price, a flat amount, or another clearly defined structure. Vague language here is a recipe for disputes.
- Scope of services. What the agent will actually do: market the property, arrange showings, negotiate offers, coordinate inspections.
Most agents use standardized forms approved by their state’s Realtor or bar association, which include legally required clauses for the jurisdiction. You can negotiate terms before signing, particularly duration and compensation. An agent who refuses to discuss either is probably the wrong fit.
Transitioning Out of Single Agency Mid-Transaction
Situations come up where a single agent encounters the other party without separate representation, for example when an unrepresented buyer contacts the seller’s listing agent directly. The agent then faces a choice: refer the unrepresented party to another agent, or shift to a different relationship type.
In states that allow dual agency, the agent can represent both sides only with written consent from both parties. The consent form must clearly explain what changes. The agent loses the ability to negotiate for or advise either party individually, because equal duties now run to both. If you’re the original client, agreeing to this means giving up the strategic advocacy you signed up for. Your agent can no longer tell you whether the other side seems desperate, or coach you on negotiation tactics.
Some states handle this through a transaction broker transition instead. Your single agent can shift to a facilitator role, but again only with your prior written consent. The disclosure must be conspicuous and clearly state that the change cannot happen without your agreement. Once you consent, the agent’s duties drop from full fiduciary obligations to the limited set: honesty, fairness, disclosure of known facts, and accounting for funds. Loyalty and full confidentiality fall away.
Think hard before consenting. The convenience of keeping one agent rarely outweighs the loss of someone contractually required to fight for your best outcome. If the other party doesn’t have representation, that’s their problem to solve, not a reason to weaken yours.
Ending the Agreement
Agency agreements don’t last forever. The most common ending is simply running out the term. Beyond that, both parties can agree to terminate early through a mutual release, which usually requires a signed document setting a new expiration date and addressing any outstanding obligations like marketing expenses the agent already paid for.
You may have grounds to terminate for cause if the agent breaches their fiduciary duties by abandoning the listing, failing to communicate, or self-dealing. Destruction of the property, loss of title, or bankruptcy of either party can also end the relationship by operation of law. Most fiduciary duties terminate with the agreement, but confidentiality and accounting survive indefinitely. Your former agent cannot start sharing your private information just because the contract ended.
The Protection Clause
Most listing agreements include a protection clause, sometimes called a safety clause or tail provision. If a buyer who was introduced to the property during the listing period purchases it within a set window after the agreement expires, the original agent still earns their commission. That window typically runs 30 to 45 days.
Without the clause, a seller could wait for the listing to expire and then sell to a buyer the agent found, cutting the agent out. But the clause can create complications when you switch agents. Most include an exception: you won’t owe the original agent a commission if you’ve entered into a valid listing agreement with a new licensed broker and the sale happens during that new agreement’s term. Read this clause carefully before signing any listing agreement, and negotiate the duration if it seems excessive.
Filing a Complaint If Your Agent Breaches
If your single agent violates their fiduciary duties, two main paths exist: an ethics complaint through the agent’s local Realtor association, and a formal complaint to your state’s real estate licensing board. You can use either or both.
NAR Ethics Complaints
Before filing anything formal, try resolving the issue with the agent or their managing broker. Many disputes come from miscommunication rather than genuine misconduct. If that fails, contact the local Board or Association of Realtors, which often offers informal options like mediation or an ombudsman.5National Association of REALTORS®. Part 4 – Appendix X – Before You File an Ethics Complaint
If informal resolution fails, you can file a formal ethics complaint. The deadline is 180 days from when you knew or reasonably should have known about the misconduct. Your complaint must include a narrative description and cite one or more of the 17 Articles of the Code of Ethics you believe were violated. A Grievance Committee reviews the complaint to decide whether the allegations, if true, could support a violation.5National Association of REALTORS®. Part 4 – Appendix X – Before You File an Ethics Complaint
The burden of proof falls on you, and the standard is high: clear, strong, and convincing evidence, meaning proof that produces a firm belief in the violation. A hearing panel’s finding of no violation isn’t appealable on the merits. Appeals are limited to procedural grounds, such as errors that prevented a full and fair hearing.5National Association of REALTORS®. Part 4 – Appendix X – Before You File an Ethics Complaint
State Licensing Board Complaints
Every state has a real estate commission or licensing board that regulates agent conduct independently of NAR. You can file with this agency regardless of whether the agent is a NAR member. The process typically involves a written complaint form along with supporting documentation: copies of contracts, correspondence, receipts, and any evidence of the violation. Penalties range from reprimands and fines to license suspension or permanent revocation. State board actions carry the force of law and can prevent someone from practicing real estate at all.
Filing with both the local Realtor association and the state licensing board at the same time is common, and sometimes the most effective approach, because the two processes address different aspects of the violation.