Conclusive evidential force: what does a deed prove?

Evidential force of purchase agreements and transfer deeds

Co-signing a purchase agreement as seller, and behaving like one, can make a person the seller, even where the deed of transfer names him only as the consenting spouse. The Supreme Court so held on 10 July 2026. A deed proves only what a party states in it, and its own text settles whom it binds. Whoever signs as seller may answer for the defects, even when the house is not his.

He signed as seller; the deed named him a spouse

Both signatories stand as sellers towards the buyers, even though only one of them owned the house. The Hague Court of Appeal reached that conclusion on five circumstances lying outside the deed of transfer, and the Supreme Court left that holding standing.

In May 2017 a husband and wife signed a purchase agreement for a house, both as sellers (para. 3.1). Only the wife owned it. At the sale the buyers were handed proof of title and a land registry extract showing her as the sole owner. The wife transferred the house by notarial deed of 28 July 2017. That deed records the husband consenting to the sale as the spouse of the seller, the consent required by Section 1:88(1) of the Dutch Civil Code (DCC). On the sellers' account the junior notary drew the buyers' attention to the difference between the deed and the purchase agreement on this point and the buyers made no objection.

The defects emerged after completion. A survey counted 69 of them, and in the proceedings the buyers alleged 119 (The Hague Court of Appeal, paras. 3.8 and 4.2). After an expert examination the district court in Rotterdam held the sellers jointly and severally liable for fifteen, and the court of appeal cut that number again (The Hague Court of Appeal, paras. 4.4 and 7.1). The Supreme Court was not asked which defects counted. It was asked whether the husband was a seller alongside his wife.

On that question the court of appeal pointed to five circumstances (The Hague Court of Appeal, para. 6.4). The husband presented himself as seller during the sale process and at the viewing. The heading of the purchase agreement describes him as seller, and he signed in that capacity. He filled in and signed the seller's disclosure questionnaire. Then the addenda: the one of 24 May 2017 lists him as one of the sellers, and the addendum drawn up after the inspection of 27 July 2017 heads him as the seller, with the owner appearing as the spouse or other seller. The roles had swapped, because in the purchase agreement he had signed on the line for the seller and she on the line for the spouse. Ownership has nothing to do with entering into a purchase agreement (The Hague Court of Appeal, para. 6.5). A seller undertakes to transfer, and a husband can perfectly well give that undertaking in respect of his wife's house.

Only a party identified in the deed may invoke it

The sellers' complaint was that the court of appeal had ignored the conclusive evidential force of the deed of transfer. On their case that deed, which has the husband down as the consenting spouse, must prevail over the purchase agreement, which names him as seller (para. 3.1.1).

The complaint fails. Conclusive evidence binds the court, which must take the content as true, while it weighs a document with free evidential force as it thinks fit. The advantage is a real one, and Section 157(2) of the Dutch Code of Civil Procedure (DCCP) grants it on narrow terms. What counts is a party's statement about the matter the deed is intended to prove for the benefit of the opposing party, and of that the deed provides conclusive evidence between the parties.

The content and purpose of that provision, together with the need for certainty in commercial dealings, confine the benefit to the opposing party and to whoever later acquires that party's right, such as an heir or a person who buys the claim. The opposing party is the person the deed identifies as such, or the person for whose benefit the signatory bound himself according to the text of the deed (para. 3.1.3). The deed of transfer does not show the husband as a party in that sense, so he cannot rely on it (para. 3.1.3).

Outside that circle the deed keeps free evidential force, and the weight it carries is for the court alone (Supreme Court 5 December 2003, para. 3.4). The same piece of paper can therefore bind the court against one litigant and merely count for something against another, in the same proceedings and at the same hearing.

The test dates from a judgment of 5 December 2003. A landlord had drawn up a tenancy agreement in the names of the son and daughter-in-law and had signed it himself. The original tenants then relied on that document to prove that their own tenancy had come to an end, though it did not so much as mention them (paras. 3.1 and 3.2). Counsel argued for a case-by-case inquiry into whom the signatory had meant the deed to bind. The Supreme Court refused: such a preliminary question cannot be accepted, and the test is drawn from the text of the deed (para. 3.4). That such a question makes the rule unworkable in practice is Advocate General Langemeijer's argument (no. 2.15).

The Supreme Court repeated the formula word for word in 2012, in a dispute between two former spouses over a right of first refusal recorded in a deed of transfer in both their names. Neither had signed that deed, so it gave no conclusive evidence against either of them, and none between the two (Supreme Court 20 January 2012, para. 3.3.2).

The missing signature is not what decides it (Opinion of Advocate General Wissink, no. 3.16.2). An heir signs nothing either and is bound all the same. What decides it is what the deed itself shows about the intention of the person concerned to be bound by it (Supreme Court 20 January 2012, para. 3.3.2).

Only a party's own statement in the deed is conclusive

Anyone relying on a deed has to be able to point to a statement in it. Section 156(1) DCCP asks two things of a deed that is not notarial, and nothing more: a signed document, intended to serve as evidence (Supreme Court 19 April 2019, para. 3.4.2). The threshold is low. A court of appeal raised it in 2017 by adding a third requirement, that the deed is whatever stands above the signature, which put a first page carrying no signature outside it. The Supreme Court set that aside on 19 April 2019. A document running to several pages and signed only at the end is a deed as well (para. 3.4.2). The party alleging that such a deed is false bears the burden of proving it, in principle (para. 3.4.3).

The document clears a low bar; the statement in it does not. Conclusive evidential force attaches to what a party states in the deed. It does not attach to everything a reader can find there, and least of all to what is absent (nos. 3.35 and 3.43). Absence was exactly the argument here, because the deed of transfer does not name the husband as a co-seller. Advocate General Bartels put it in a line (no. 3.30): "Conclusive evidential force is no superpower." It gives the party who successfully invokes it a head start. The race still has to be run (no. 3.27).

For practitioners his opinion offers something more useful than the operative part of the judgment. The words "seller" and "buyer" sit in the standard form of a deed of transfer and say nothing about who entered into the purchase agreement. Section 3:89(1) DCC, on his reading, asks who is entitled to transfer and who acquires, and leaves open which of them sold. That only the wife could transfer follows from her ownership and settles nothing about who agreed to sell (no. 3.45).

A later deed can vary the sale, but only expressly

None of this means that a deed of transfer can never override an earlier purchase agreement. It can, and a judgment of 22 April 1994 shows when. A purchase agreement of 9 June 1978, not notarial, described a plot of meadow of about 80 ares, some 8,000 square metres. The notarial deed of transfer two weeks later described about eighty-five ares and ninety centiares (para. 3.1). By its nature, the Supreme Court held, that deed provides conclusive evidence that the parties had stated, departing from the purchase agreement, that they had sold and bought 85.90 ares (para. 3.8). The court of appeal could take that description as its starting point, subject to evidence to the contrary, and it was for the seller to produce it (para. 3.9). He did not, and he lost the ditch and the strip of land on the far side of it.

The difference from the 2026 case lies in the wording. The 1978 deed of transfer contained a specific statement that departed from the purchase agreement. The 2017 deed of transfer said nothing about the husband's role.

The converse has been decided too. A judgment of 22 December 2017 concerned a handwritten document carrying the words "agreed" and "purchase of land", land registry references, surface areas and a price. The court of appeal found it very thin, a string of loose catchwords (para. 3.3.2). Nothing in it amounted to a statement directed at sale and purchase, so it carried no conclusive evidential force on the question whether signature had brought a purchase agreement into being (para. 3.4.2). The court of appeal was entitled to hold that. It went too far in then shutting the document out of the evidence altogether, because a deed without conclusive evidential force must still visibly count in the assessment of the evidence (para. 3.5.2).

Two questions run in parallel here, and the Supreme Court pulled them apart on 10 June 2022 in a case about the deed of a limited partnership. Whether the deed contains a statement within the meaning of Section 157(2) DCCP is one question. How the agreement recorded in that deed is to be construed is another (Supreme Court 10 June 2022, para. 3.1.4). The first turns on the deed alone (para. 3.1.2). The second is governed by the Haviltex standard, which takes in all the circumstances of the case. A party relying on the legal effect of its own construction has to state the facts that support it and, if called on, prove them (para. 3.1.2).

Evidence to the contrary may go to the truth stated

Section 151(2) DCCP leaves evidence to the contrary open unless a statute shuts it out, and by Section 152(1) DCCP it may be given by any means unless a statute provides otherwise. That latitude extends beyond the deed itself. On 13 May 2016 the Supreme Court held that evidence to the contrary is not confined to an assertion that what was said before the notary differed from what the deed records. It can go just as well to the assertion that what the deed records is untrue (para. 3.4.1). How such evidence has to be offered, and why an offer can still fail, is set out in the analysis of evidence to the contrary against a deed.

The court of appeal in that case had read the point narrowly and had turned down the offer of evidence on that footing (para. 3.2.2). A buyer of shares in a pharmacy holding company should therefore have been allowed to prove that the purchase price acknowledged as received in the notarial deed, twice €630,612.50, was never meant by the parties to be payable at all (para. 3.4.3). The judgment survived anyway, because a successful plea of limitation supported it independently (para. 3.5).

Where a statute does shut out evidence to the contrary, it takes the deed's conclusive force away in the same breath. Section 158(1) DCCP does that to an acknowledgement of debt that is not notarial and that is neither written out by hand nor accompanied by a handwritten approval stating the sum in words. The exception is narrow. In the bitcoin judgment of 25 November 2022 the Supreme Court held that in a case of that kind it reaches only the part of the statement by which the debt was assumed. The rest of the deed, including the admission of the theft itself, goes on providing conclusive evidence (para. 3.1.3).

Room to adduce evidence to the contrary is one thing, a right to be heard is another. The offer in the 2026 case failed because the facts on offer, even taken as established, could not shift the outcome against the weight of the circumstances the court of appeal had found (para. 3.2.2). Advocate General Bartels would have heard the notary. What was said in the notary's office could show, through the doctrine of intention and reliance in Sections 3:33 and 3:35 DCC, that the buyers had no reasonable ground to take the husband for a seller, or that the parties varied the purchase agreement at completion (nos. 3.20 and 3.22). The Supreme Court was not persuaded.

What does this mean for anyone who co-signs a contract?

Put the intended consequence in the deed, and do not lean on what is said across the table at signing. The test looks to the text, so an oral remark by the notary that the deed of transfer departs from the purchase agreement gives no conclusive evidence, even where the other side lets it pass unchallenged. To bring an obligation already assumed to an end, have the deed record that the parties intend that and name who is released. A standard clause carrying the purchase agreement forward save where expressly varied will not do the job, and the court of appeal here held that such a clause was not even relevant to the question (The Hague Court of Appeal, para. 6.6).

Be exact about capacity when signing. Section 1:88 DCC gives the spouse one role, consenting to the sale. A spouse who also appears as seller in the heading and under the signature, fills in the questionnaire and countersigns every addendum will be judged on all of it together. Anyone selling a house for a couple of whom only one is the owner should make the choice up front. Either both as sellers, and then both answerable for the defects, or one as seller and the other purely in the Section 1:88 role, carried through every document consistently.

Where the error sits in the standard form, it comes home to whoever drew up the document. The purchase agreement here was drafted by the estate agent on the NVM standard form for an existing family home, the model published by the Dutch estate agents' association, and it put both spouses down as sellers. The husband sued his estate agent in indemnity proceedings, and on the same day as it decided the main action the district court in Rotterdam held that this was a professional error (Rotterdam District Court, para. 4.12). Between those two parties the very thing the buyers could never see was common ground: the husband did not own the house and should have been named as the consenting spouse (Rotterdam District Court, para. 4.6).

Drawing up a purchase agreement for a house is core work for an estate agent, and considerable care can be expected of it, particularly on the capacity in which each party signs (para. 4.11). The answer that a layman should have spotted the error on the first page and on the signature page did not run, because the estate agent had not spotted it herself (para. 4.6). On that side of the case see professional liability.

One further point: a judgment from the Supreme Court does not close the file. Liability is settled and quantum is not, because the court of appeal had already sent the case back to the district court in Rotterdam, which still has to put a figure on the remaining defects (The Hague Court of Appeal, para. 6.26). For the wider framework of the law of evidence see inspection of documents and, on the purchase side, purchase of real estate.

Frequently asked questions

Can an heir rely on the conclusive evidential force?

Yes. The benefit runs to whoever later acquires the opposing party's right, and such a person has signed nothing. An heir, or a buyer of the claim, steps into the evidential position of the predecessor. That is also why the signature cannot be the test: someone bound without signing disproves it.

What wording will release an earlier obligation?

Wording that spells out the release. Name the party who comes free and the obligation that falls away, and say that the parties intend the deed to record it. Changing how the parties are described in the heading achieves nothing, because that description is boilerplate in deeds of transfer and says nothing about who contracted.

What does free evidential force mean for a third party?

That the document is usable without being decisive. The court may draw evidence from it and is equally free not to, weighing it alongside witness statements, correspondence and expert reports. One thing only is lost, the court's obligation to take the recorded content as true, and that is the whole of the difference.

Cited case law

Supreme Court: ECLI:NL:HR:2026:1224 (10 July 2026, a deed provides conclusive evidence only for the benefit of the person it identifies as the opposing party, or for whose benefit the signatory bound himself according to its text); ECLI:NL:HR:2012:BU3100 (20 January 2012, no conclusive evidence against two beneficiaries named in the deed who did not sign it, and none between the two of them); ECLI:NL:HR:2003:AK3701 (5 December 2003, the test comes from the text of the deed and not from a separate inquiry into whom the signatory meant the deed to bind); ECLI:NL:HR:2019:641 (19 April 2019, a document of several pages signed only at the end is a deed within the meaning of Section 156(1) DCCP); ECLI:NL:HR:2017:3263 (22 December 2017, conclusive evidential force turns on the deed alone, and a deed that lacks it may not be shut out of the assessment of the evidence); ECLI:NL:HR:2022:852 (10 June 2022, whether the deed contains a statement within the meaning of Section 157(2) DCCP is separate from the Haviltex construction of the agreement recorded in it, and the party relying on the legal effect of its construction has to state the facts that support it); ECLI:NL:HR:1994:ZC1345 (22 April 1994, the mirror image: a deed of transfer giving a surface area that departs from the purchase agreement provides conclusive evidence of that description by its nature, subject to evidence to the contrary from the seller); ECLI:NL:HR:2016:848 (13 May 2016, evidence to the contrary may also go to the assertion that the statement recorded in the deed is untrue); ECLI:NL:HR:2022:1725 (25 November 2022, the exception in Section 158(1) DCCP reaches only the part of the statement by which the debt was assumed).

Opinions of the Advocate General: ECLI:NL:PHR:2025:1333 (Advocate General Bartels, 5 December 2025, conclusive evidential force attaches to a party's statement and not to what is missing from the deed; advised that the judgment be set aside on the offer of evidence); ECLI:NL:PHR:2012:BU3100 (Advocate General Wissink, 28 October 2011, a missing signature does not itself decide the question, and against third parties the deed has free evidential force); ECLI:NL:PHR:2003:AK3701 (Advocate General Langemeijer, 12 September 2003, a broad reading would call for evidence on whom the disposition was made to and is unworkable in practice).

Courts of appeal: ECLI:NL:GHDHA:2023:1364 (The Hague, 18 April 2023, the judgment under appeal: the husband is a co-seller on the strength of five circumstances, and four categories of defect for which the district court found liability fall away).

District courts: ECLI:NL:RBROT:2021:2760 (Rotterdam, 10 March 2021, the indemnity proceedings in the same dispute: an estate agent who puts the consenting spouse on the purchase agreement as a seller commits a professional error, and the duty to complain in good time does not assist her where she had not spotted the error herself).

Juriaan de Vries is a lawyer at Prime Law and litigates on contracts and evidence. See the disclaimer.