Definition
A real estate broker is a person licensed to act as an intermediary in real estate transactions — facilitating the purchase, sale, lease, or exchange of real property on behalf of others, typically for a commission. The broker's role is fundamentally one of agency: the broker represents a principal (buyer, seller, landlord, or tenant) and owes that principal fiduciary duties including loyalty, disclosure, confidentiality, and reasonable care.
The term is sometimes used loosely to cover all real estate professionals, but in most jurisdictions it has a precise statutory meaning distinguishing a broker (the licensed principal who may operate independently and supervise others) from a salesperson or agent (a licensee who must work under a broker's supervision).
Three core functions define the role:
1. Procurement. A broker locates a ready, willing, and able buyer or tenant, or a seller or landlord seeking to transact.
2. Negotiation and representation. The broker facilitates negotiations, prepares or presents offers, and advises the principal on transaction terms.
3. Completion. The broker coordinates the closing process, often working alongside attorneys, title companies, and lenders.
Commission is the broker's primary compensation. It typically arises upon the broker procuring a ready, willing, and able counterparty who meets the listing terms — regardless of whether the transaction ultimately closes, unless the listing agreement specifies otherwise.
Common Language
Modern common usage (Wiktionary): A person who acts as an agent in the buying and selling of real estate, charging a fee or commission for their services.
Historical common usage (Webster's 1913): An agent who negotiates contracts for real property on behalf of a principal; one who buys and sells real estate for others.
The common and legal meanings are broadly aligned, but the legal definition carries weight the common usage obscures. In law, broker status is not merely descriptive — it is a licensed status with statutory prerequisites, fiduciary obligations, and regulatory consequences. Calling oneself a broker without a license is a civil and often criminal violation in every U.S. jurisdiction. The common usage treats "broker" as a job description; the legal usage treats it as a regulated credential.
Common Confusion
Real estate broker vs. real estate agent/salesperson: These terms are routinely used interchangeably in ordinary speech and even in some older legal materials, but they are distinct in modern licensing law. A broker holds the senior license and may operate independently, open a firm, and supervise salespersons. An agent or salesperson holds a subordinate license and must work under a licensed broker. The legal consequences — who can be sued, who holds client funds in trust, who bears supervisory liability — turn entirely on this distinction.
Real estate broker vs. mortgage broker: Unrelated roles that share the word "broker." A mortgage broker arranges financing, not real property transactions. They are licensed separately under different statutory schemes.
Why It Matters in Research
Licensing statutes transformed the field. Pre-twentieth century sources — including Bouvier and Burrill — define the real estate broker entirely by conduct (engaging in purchase and sale as a business). Modern law defines the broker primarily by licensure. When reading pre-1920s cases or treatises, licensing requirements are absent, and the legal framework governing the broker's duties was far thinner. Do not assume that common law rules from that era map onto the modern licensed-broker framework.
Commission disputes dominate the case law. A researcher tracing commission entitlement will find two distinct legal questions: (1) whether a valid listing agreement exists, and (2) whether the broker procured a ready, willing, and able buyer. These questions have generated enormous bodies of state case law with significant jurisdictional divergence. Historical sources address the second question in depth but predate the formalization of listing agreement requirements.
Dual agency is a modern minefield. The broker who represents both buyer and seller in the same transaction creates acute fiduciary conflicts. This doctrine is almost entirely a post-Bouvier development. Researchers working on fiduciary duty questions should not rely on historical dictionary definitions to frame the modern dual-agency problem.
The distinction between broker and agent matters for liability research. Cases involving unauthorized practice, unlicensed compensation claims, or firm liability often turn on the broker/salesperson distinction. Historical sources use these terms interchangeably, making period research unreliable for modern licensing questions.
Corpus connections: Commission disputes link directly to contract formation and the statute of frauds (listing agreements must typically be in writing). Fiduciary duty claims link to the broader agency law corpus. Licensing violation questions link to administrative law and state regulatory materials.
Historical Dictionary Support
Bouvier and Burrill are in close agreement — both define the real estate broker as one who engages in the purchase and sale of real estate as a business and holds himself out to the public in that capacity, and both trace the language to the same Pennsylvania authority (26 Pa. 138). The alignment is unsurprising given the degree to which Burrill drew from Bouvier.
What these definitions capture well: the business-and-occupation element (distinguishing a broker from someone who incidentally assists in a single transaction) and the public-holding-out requirement (suggesting a reliance and market-representation dimension that would later inform licensing rationale).
What these definitions miss entirely: licensure, fiduciary duty structure, the broker/salesperson distinction, dual agency, buyer representation agreements, MLS membership, and any regulatory framework. The historical definitions are useful for understanding the common law baseline but are structurally incomplete as a guide to modern practice.
Jurisdictional Note
Licensing requirements, commission rates, disclosure obligations, and dual-agency rules vary significantly by state. Several states have moved toward mandatory buyer's agency disclosure or mandatory written buyer representation agreements. The broker/salesperson licensing tier distinction exists everywhere but the precise nomenclature and examination requirements differ. No federal licensing scheme governs residential real estate brokerage.
Encyclopedia Cross-Reference
The Law Mind Property Law Encyclopedia — Real Estate Transactions: Real Estate Brokers (Licensing, Duties, Commission)
The Law Mind Real Estate Transactions & Construction Encyclopedia — Real Estate Brokers and Agents: Licensing Requirements, Regulatory Framework, and State Variation
The Law Mind Property Law Encyclopedia — Real Estate Transactions: Fraud and Misrepresentation in Real Estate