California agency can arise before anyone uses the word agent
Before the act
Express or implied actual authority comes from the principal-agent relationship
After the act
Ratification can adopt an unauthorized act already taken for the principal
Through appearance
Ostensible authority depends on what the principal caused a third person reasonably to believe
A California real estate agency relationship is usually created when a principal actually employs a broker by express or implied agreement. Authority can also arise from conduct, a principal can later ratify an unauthorized act, and a principal can create ostensible authority by causing a third person reasonably to believe someone is authorized. A signature is powerful evidence, but it is not the only fact that can create agency duties.
DRE Reference Book, Chapter 10: Creation of Agency Relationships · checked 2026-08-27California's Civil Code starts with two agency categories: actual and ostensible
Actual agency
Civil Code section 2299 says agency is actual when the agent is really employed by the principal. The authorization may be stated expressly or inferred from the principal-agent dealings and the authority reasonably necessary to accomplish the agency's objective.
Ostensible agency
Civil Code section 2300 focuses on the principal's effect on a third person: the principal intentionally, or through lack of ordinary care, causes that person to believe someone is the principal's agent even though no actual employment exists.
Five labels describe the creation path or its legal consequence
| Label | Core rule | Deciding question | Whose perspective matters |
|---|---|---|---|
| Express actual agency | Principal and broker communicate an authorization directly, usually in a listing or buyer representation agreement | What did the principal expressly authorize? | The principal's and agent's agreement |
| Implied actual agency or authority | The principal's words, conduct, or lack of ordinary care allows the agent reasonably to believe the authority exists | What did the agent reasonably believe the principal authorized? | Conduct between principal and agent |
| Ratification | The principal later adopts a previously unauthorized act performed on the principal's behalf | Did the principal knowingly adopt the whole act in the required manner before withdrawal? | Backward-looking approval |
| Ostensible or apparent agency | The principal intentionally or negligently causes a third person reasonably to believe another has authority | What appearance did the principal create for the third party? | Third-party perception and reliance |
| Estoppel | After creating and inducing reasonable reliance on that appearance, the principal may be prevented from denying the authority | Did the third party reasonably rely to their detriment? | Consequence of ostensible authority |
Estoppel is the consequence, not a secret sixth kind of authority
Ostensible or apparent authority describes the appearance the principal created. Estoppel describes why the principal may be prevented from denying that appearance after a third person reasonably relied on it to their detriment.
Actual authority can be express or implied
Express authority
The principal directly states what the agent may do in a written or oral authorization, subject to any rule requiring a writing. A listing may authorize marketing, showing, and soliciting offers. It ordinarily does not authorize the broker to sign a deed or purchase contract for the owner.
Implied actual authority
Authority can be implied when it is reasonably necessary to carry out the express objective, follows established dealings or custom, or is allowed by the principal's conduct. It supplements an actual relationship but cannot contradict an express limitation.
Civil Code section 2316 frames actual authority from the agent's perspective: authority the principal intentionally confers, or intentionally or through lack of ordinary care allows the agent to believe the agent possesses. Ask what the principal communicated to the agent, directly or through conduct.
California Legislative Information, Civil Code section 2316 · checked 2026-08-27Ostensible authority must come from the principal, not the supposed agent alone
PRINCIPAL
Creates or allows the appearance of authority through words, conduct, position, or silence when correction is reasonably required
THIRD PERSON
Reasonably believes the authority exists
RELIANCE
Acts to their detriment, supporting estoppel against the principal
Civil Code section 2317 states the authority in terms of what the principal causes or allows the third person to believe. DRE emphasizes that an agent's statement alone cannot establish ostensible authority. The principal's failure to communicate a private limitation can matter when the principal otherwise created the appearance of ordinary authority.
California Legislative Information, Civil Code section 2317 · checked 2026-08-27Ratification looks backward and adopts an unauthorized act
Civil Code section 2307 allows authority through a prior authorization or later ratification. Once validly ratified, the act has the legal consequences it would have had if originally authorized. Acceptance of a benefit can show adoption only when the form and knowledge requirements are satisfied.
- 01Representative actThe person must have professed to act as the principal's representative when taking the unauthorized action
- 02CapacityThe principal must have been capable of authorizing the act when it occurred and when ratification happens
- 03KnowledgeThe principal generally must know the material facts, unless intentionally ratifying regardless of what those facts are
- 04Whole transactionThe principal accepts the burdens with the benefits and cannot ratify only the favorable part of an indivisible transaction
- 05Timing and formRatification occurs before the third party withdraws and in the form that original authority for the act would have required
Keeping the benefit is not a universal shortcut
Ask whether the principal knew the material facts, intended to adopt the act, accepted the entire indivisible transaction, had capacity, acted before withdrawal, and used the form the original authority required. One missing element can defeat the exam's ratification answer.
No writing and no agency are different conclusions
| Question | Rule | Exam consequence |
|---|---|---|
| Can conduct create duties? | Yes, actual or ostensible relationships can arise from agreement or conduct | Do not end the analysis merely because there is no signed form |
| Can the broker enforce a commission promise? | A signed writing is generally required for the broker's contract claim for compensation in a real property transaction | Agency duties and fee enforceability are separate issues |
| Can oral authority support an act requiring written authority? | Civil Code section 2309 requires written authority to enter a contract that law requires to be in writing | Match the authority's form to the act being authorized |
| What about a buyer-broker agreement? | Current California law separately requires a signed written buyer-broker representation agreement | The agreement requirement does not erase the risk that conduct creates duties before paperwork is handled correctly |
Eight scenarios separate formation from a label on a form
A seller signs a 90-day listing authorizing Broker Oak to market the home and solicit offers.
Express actual agency
The signed employment agreement directly authorizes the broker.
An owner repeatedly directs a property manager to order ordinary repairs, then says nothing about a similar necessary repair within the established practice.
Possible implied actual authority
The question is what the manager reasonably understood from the owner's conduct, the agency objective, and established practice.
A salesperson says, without the owner's knowledge, 'I can sign for the owner.'
No ostensible authority from that statement alone
Ostensible authority must be traceable to the principal's acts, omissions, or manifestations, not only the supposed agent's claim.
The owner introduces Lee as authorized to negotiate, privately limits Lee, and never communicates the limit to a buyer who reasonably relies.
Possible ostensible authority and estoppel
The owner's outward conduct created the appearance on which the third party relied.
A broker accepts an unauthorized deal for an owner. After learning all material terms, the owner accepts its benefits and adopts the deal in the legally required form.
Possible ratification
Later adoption can give the unauthorized act the consequences of original authorization.
An owner accepts the deposit from an indivisible unauthorized transaction but rejects every related obligation.
Not selective ratification
The principal cannot keep only the benefit while rejecting the burdens of the same indivisible act.
A seller's broker shows the listing, describes it, and transmits an unrepresented buyer's offer without advocating for the buyer.
Not automatically buyer agency
Routine seller-agency service does not alone prove that the broker undertook to represent the buyer.
The same broker tells an unrepresented buyer, 'I will negotiate the lowest possible price for you,' then acts on that promise with the buyer's consent.
Agency risk through agreement and conduct
Undertaking to advocate for the buyer can support an actual, implied, or ostensible relationship despite the absence of a formal label.
Use four questions to classify the creation path
- 01Before or after?Authority existing before the act points to actual or ostensible authority. Later adoption points to ratification.
- 02Whose belief?The agent's reasonable belief points to actual authority. A third person's reasonable belief caused by the principal points to ostensible authority.
- 03Who created the appearance?The principal must be the source of ostensible authority. The supposed agent's unsupported claim is not enough.
- 04What form and scope?Check the express limits, reasonably necessary implied powers, any required writing, and whether the act exceeds a special agent's ordinary authority.
Eight agency-creation mistakes
Assuming actual authority must always be express and written
Using implied actual authority and ostensible authority as interchangeable labels without asking whose belief matters
Letting the supposed agent's claim alone create ostensible authority
Calling later approval implied authority instead of testing ratification
Treating acceptance of one benefit as automatic ratification without knowledge, form, scope, and timing
Allowing a principal to ratify only the favorable part of an indivisible transaction
Confusing an existing agency duty with an enforceable written commission claim
Assuming routine service to an unrepresented party automatically creates representation
Test the authority before applying the fiduciary duty
Time, belief, source, scope
Those four checks separate express, implied, ratified, and ostensible agency before a tempting answer choice collapses them together.
Then apply the OLDCAR dutiesCalifornia license requirement FAQs
Keep going
Place agency formation inside the complete Agency area
Move from qualification to forms, fingerprints, the examination, and license issuance.
Place formation inside the complete relationship map
Identify the principal, broker, affiliated licensee, third party, and full agency lifecycle.
Apply the duties after finding the principal
Use OLDCAR to classify the conduct once the agency relationship and scope are established.
Practice actual, implied, ratified, and ostensible agency
Test formation, scope, authority, duties, and third-party consequences in California scenarios.