A conflict of interest exists when a property professional’s duties, remuneration or relationships may influence advice given to a buyer. Dual agency is one form: the same professional or business acts for both buyer and seller in the same transaction. Other conflicts arise through seller-paid commission, developer relationships, referral fees or pressure to use connected professionals.
A conflict does not disappear because an agent calls themselves buyer-only, independent or a personal shopper. The buyer needs written facts: who instructed the agent, who pays them, who receives the buyer’s confidential information and whether remuneration changes according to the property selected.
Independent buyer representation requires more than a buyer-facing service. The buyer should obtain written disclosure of seller instructions, listing interests, commissions and referrals before sharing a maximum budget or negotiation position. If one party serves competing interests, the buyer must understand the practical effect and decide whether separate representation is necessary.
This page examines independence, disclosure and conflicting incentives. For the ordinary division between buyer-side and seller-side work, see Buyer’s Agent vs Seller’s Agent in Spain; for scope, fees, authority and termination, see Buyer Representation Agreement in Spain.
Buyer Agent, Seller Agent and Dual Agent
A buyer’s agent is appointed to pursue the buyer’s agreed search and commercial objectives. A seller’s agent markets property for the owner and seeks a transaction acceptable to the seller. Dual agency places both appointments within the same transaction.
Spain does not have one uniform nationwide buyer-agency model. Contract terms and autonomous-community requirements matter. In Catalonia, housing legislation requires real-estate agents within scope to act with diligence, responsibility and professional independence. That regional obligation does not remove the need to inspect the actual relationships in a transaction.
For the basic role distinction, see buyer’s agent versus seller’s agent in Spain. This page focuses on the situations where loyalties or incentives overlap.
Common Conflict Sources
| Situation | Buyer concern | Control |
|---|---|---|
| Agent also lists the property | Competing price, disclosure and negotiation objectives. | Separate representation or explicit informed arrangement. |
| Seller or developer pays | Recommendations may favour payable inventory. | Written amount, source and selection-policy disclosure. |
| Referral fee | Lawyer, broker or surveyor recommendation may be influenced. | Disclose payment and preserve buyer choice. |
| Shared business ownership | Connected firms may not be operationally independent. | Identify beneficial and commercial relationships. |
| Percentage fee | Higher purchase price may increase remuneration. | Transparent calculation and evidence-based offer process. |
Why Dual Agency Affects Negotiation
A seller generally wants the strongest price and conditions. A buyer generally wants an evidence-based price, protective conditions and freedom to withdraw when material problems appear. One representative may find it difficult to advocate fully for both positions.
Confidentiality is equally important. A buyer may disclose their maximum budget, urgency, alternative properties or willingness to accept defects. Ask whether that information can be shared with the seller, listing team or another part of the same group.
The safest control is often separate representation. Where the buyer accepts an overlapping role, the scope and information boundaries should be documented before negotiation begins.
Seller-Paid Commission and Referral Income
Receiving seller-side remuneration does not by itself tell you whether the service is unsuitable, but it is material information. Ask:
- Who pays the agent if this property completes?
- Is the payment fixed or linked to price?
- Would the agent receive nothing if another property were selected?
- Is the buyer’s fee reduced by third-party commission?
- Does the agent receive referral income from recommended professionals?
- Will every relevant relationship be disclosed before an introduction?
The answers belong in the buyer representation agreement, not merely in a verbal assurance.
Buyer-Only Claims to Verify
“Buyer-only” should mean the professional does not hold a seller instruction for the property and has no undisclosed incentive inconsistent with the buyer’s role. Verify company-level relationships, not only the individual agent’s statement.
Ask for examples of how the agent handles a property listed by an affiliated business, a developer paying commission or a seller who offers a higher fee. A credible answer should describe disclosure and buyer control, not simply repeat the word independent.
Connected Lawyers, Surveyors and Brokers
A buyer’s agent can coordinate specialists, but the buyer should remain free to appoint an independent property lawyer, technical professional, valuer and mortgage adviser. A referral may be convenient and still require disclosure.
The key test is whether the professional owes their work to the buyer, defines their own scope and reports findings directly. Charfort’s guide to what a buyer’s agent verifies explains where agent coordination ends and specialist responsibility begins.
Questions to Ask Before Appointment
- Do you or any connected company represent sellers?
- Do you hold listings or developer sales appointments?
- Who pays you for each property introduced?
- Do you receive referral fees from lawyers, lenders or surveyors?
- How is my maximum budget protected?
- What happens when you have a financial interest in a listing?
- May I appoint professionals of my own choice?
- Will all conflicts be disclosed in writing before I act?
- Can I terminate if an undisclosed conflict appears?
- How are records and confidential documents separated?
Vague or defensive answers are warning signs. Disclosure should be specific enough for the buyer to evaluate the incentive.
Red Flags During the Search
Pause if the agent repeatedly promotes only properties from one developer or network without explaining broader market coverage; refuses to identify the commission source; discourages independent advice; shares your budget with the seller without authority; or describes a seller-paid listing agent as your representative merely because they answer your questions.
Also watch for pressure to reserve before legal or technical review, especially where the agent’s fee is triggered at reservation. The offer-verification process should make unresolved assumptions visible before money or commitment is introduced.
Disclosure Does Not Automatically Resolve the Conflict
Disclosure gives the buyer information; it does not prove that the arrangement is acceptable. A statement such as “we may receive commission” is too general if the amount and payer vary by property. The buyer needs enough detail to understand whether the agent earns more from one option, whether a referral is conditional on completion and whether confidential information can cross teams.
The buyer should also have time to consider the disclosure before acting. A conflict revealed only when an offer is ready or a reservation deadline has been created is difficult to evaluate freely. The mandate should require early and transaction-specific disclosure.
If the conflict can be managed, record the controls. These may include separate personnel, restricted information, direct buyer approval, independent price analysis and freedom to appoint outside professionals. If the conflict affects core loyalty or confidentiality, separate representation may be the clearer answer.
Scenario: A Developer-Paid Introduction
Assume a buyer appoints a property finder who searches both resale and new-build homes. A developer offers that finder a completion commission. The buyer should be told the existence and basis of the payment before the development is recommended, whether the buyer also pays a fee, and whether comparable developments that pay nothing were searched.
The buyer can then assess the property on its merits, request broader evidence or choose another representative. The risk is not simply that commission exists. It is that the payment silently changes the search universe or the urgency of the recommendation.
The same reasoning applies to connected mortgage brokers, lawyers and surveyors. A useful referral explains qualifications and fit. It should not make the transaction dependent on using a provider whose commercial relationship was hidden.
Keep disclosures with the transaction record. If remuneration or representation changes after a property is selected, require an updated written explanation before authorising negotiation or payment.
How Charfort Approaches Representation
Charfort’s buyer service is designed around a defined buyer brief, transparent scope and coordination with the buyer’s professional team. International purchasers can review the broader Buyer’s Agent in Spain guide and discuss representation through Charfort’s Spain property-buying service.
Frequently Asked Questions
Is dual agency illegal in Spain?
The answer depends on the facts, contract and applicable regional rules. Do not rely on a general label; obtain legal advice on the actual arrangement and disclosure.
Does seller-paid commission always create dual agency?
Not necessarily, but it creates a financial relationship the buyer should understand before relying on recommendations.
Can the same agency have separate buyer and seller agents?
It may, but company-level incentives and information controls still require examination. Separate staff do not automatically eliminate conflict.
Should I disclose my maximum budget?
Only as needed and with clear confidentiality expectations. Ask how the information will be used and who can access it.
Can I use my own lawyer and surveyor?
You should preserve that choice. Pressure to use only connected providers is a warning sign requiring explanation.
What should happen if a conflict appears later?
The agreement should require prompt disclosure and provide a workable response, including informed consent, changed scope or termination where appropriate.
Sources and Review
*Last reviewed 21 July 2026. General information; obtain advice on the actual relationship and contract.*