Seller’s or real estate agent’s duty to disclose (Lexicon)

The duty of disclosure obliges sellers and real estate agents to voluntarily reveal to the buyer all value-affecting and decision-making aspects of a property — from hidden defects to ongoing legal disputes up to economic risks such as special levies. If the seller breaches this duty in bad faith, the buyer can still challenge the purchase agreement, claim damages, or reduce the purchase price even years later — even if a notarized warranty exclusion was agreed upon. This lexicon article clarifies exactly what must be disclosed, where the limits lie, and which errors most frequently lead to legal disputes in practice.

Definition: What does duty of disclosure mean in real estate law?

The duty to disclose is a pre-contractual ancillary obligation under § 311 para. 2 BGB in conjunction with § 241 para. 2 BGB. It applies already during the initial phase of the sales contract and obliges the seller to voluntarily disclose all facts that are evidently of essential importance for the buyer’s decision to purchase. Case law (BGH, V ZR 30/19) has defined the scope of this duty over decades.

• Legal basis — §§ 311, 241, 280 BGB
• Recipient — seller, real estate agent, possibly developer
• Timing — already before the conclusion of the contract
• Form — oral or written, the seller is under a duty to prove disclosure
• Statute of limitations — 10 years in case of fraudulent misrepresentation (§ 438 para. 3 BGB)

Which defects and circumstances must be disclosed?

To disclose is to reveal all facts that significantly affect the value or suitability of the property. The standard is whether an average buyer would take the information into account when making a reasonable purchase decision. Minor issues such as a scratch in the parquet flooring do not fall into this category — structural, legal, or economic risks do, however.

Practical example: Hidden special levy costs 42,000 €

A typical dispute from real estate practice shows how quickly the duty of disclosure becomes a financial risk — especially when buying rented properties as an investment.

Buyer K acquires a condominium in Munich for 580,000 € in 2023. Three weeks after the notarization, the owners’ association decides on a special assessment of 42,000 € for a facade renovation — however, the decision had already been specifically discussed in the owners’ meeting six months before the sale. The seller had received the minutes but did not disclose them. Result: The Federal Court of Justice considers this as fraudulent misrepresentation. K can reduce the purchase price or withdraw from the contract — despite the notarized exclusion of liability.

Anyone who wants to buy their first property should always request and have checked the last three owners’ meeting minutes.

Duty of disclosure of the real estate agent: Own research or just passing on information?

The real estate agent is liable under the real estate agent contract (§ 652 BGB) and the pre-contractual duties towards both parties. He does not have to research every detail himself, but must pass on all facts he knows or can recognize — and must not make statements “out of the blue.” The following overview shows which specific duties apply to the real estate agent in practice.

• Known defects — complete disclosure without embellishment
• Suspicious circumstances — need to point out the need for further examination
• Own identity — address, supervisory authority, terms and conditions
• Commission structure — transparent disclosure before commencing work
• Dual representation — disclosure to both parties

As described in the guide to Sell House, every seller should fix all defects in writing in the exposé and the purchase contract — this creates evidence security and significantly reduces liability risks.

Differentiation: Duty to inform vs. warranty vs. product defect

Three terms are constantly mixed up in practice — they, however, have different legal consequences and statute of limitations.

Important: The notarial warranty exclusion (“as seen, so bought”) does not apply in cases of fraudulent intent. Anyone who, as a seller, knows of a defect and conceals it is liable despite the exclusion — one of the most common misconceptions when selling a property.

Common mistakes and misunderstandings

In over 60 % of cases concerning the duty of disclosure, it is not about classic construction defects, but about so-called “small” omissions that later turn out to be decisive for the purchase decision.

• “As seen, as bought” misconception — does not protect against fraud
• Verbal assurances — often don’t end up in the contract
• Underestimated liabilities — soil assessments often forgotten
• Minutes of the WEG — rarely fully handed over
• Heir inheritances — Heirs often don’t even know about the defects themselves

When it comes to the asset-based valuation method or the income-based valuation method, a closer look is worthwhile, as hidden defects often become visible as a value reduction here — a good expert finds what is missing in the property description.

FAQ on the duty to inform

Must the seller also disclose defects that he only suspects?

Yes, as soon as there are specific indications. The Federal Court of Justice clarifies that even a serious suspicion — such as recurring dampness in the basement or a sunken floor — is disclosure-obligatory. The seller does not have to prove that damage exists, but he may not conceal reliable evidence. Anyone who leaves the buyer without notice in such cases risks being assessed as having committed fraudulent misrepresentation, with all consequences up to and including the revocation of the sale.

How long can a buyer claim damages for a breach of the duty to disclose?

For normal product defects, claims expire after five years from the transfer of the property (§ 438 Abs. 1 BGB). However, if the defect was deliberately concealed, the deadline is extended to ten years — and starts only when the buyer becomes aware of the defect. In practice, this means that damage claims can still be successful even after eight or nine years, if the buyer can prove that the seller was aware of the defect.

What documents should a buyer always request to close disclosure gaps?

Mandatory reading includes the land register extract, building encumbrance register, energy certificate, last three minutes of the owners’ meeting including the financial plan, proof of the maintenance reserve, division declaration, and all approvals for renovations or roof extensions. For rented properties, additionally all rental agreements including the last two years’ additional costs statements. These documents cover over 90 % of typical points of contention and provide the basis for a well-founded price negotiation.

Back to the Wiki: Real Estate Lexicon