The notarised contract is where a Vietnamese purchase becomes binding.

The pink book is the site’s most-read Vietnamese document page, and it describes the endpoint: the certificate that makes you the registered owner. This is the step immediately before it. The notarised sale and purchase contract is where a Vietnamese purchase stops being an intention and starts being an obligation, and it is the last point at which a problem costs you a deposit rather than a lawsuit. It is also the document a bank will ask to see years later, when you want to send the proceeds out.

When in a Vietnamese Purchase Is the Sale Contract Notarised?

After the deposit and before the certificate. The ordinary sequence on a resale runs: eligibility and quota checks on the building, a deposit agreement, the parties’ papers assembled, the appointment at a notarial practice organisation, tax and fees settled, then the registration that produces the certificate in the buyer’s name.

Article 164(4) of the Housing Law 2023 says where it happens. Notarisation of a contract about housing is carried out at a notarial practice organisation; authentication is carried out at the commune-level People’s Committee where the housing is located. Those are two different routes to the same statutory effect, which is why the law keeps saying “notarised or authenticated” rather than only the first.

The timing point that matters for a foreign buyer is that this appointment is not the end of anything. It makes the sale binding; it does not make you the registered owner. The certificate follows on its own timetable, and the gap between the two is where most of the anxiety in a Vietnamese purchase actually lives.

What Does Notarisation Change About the Buyer’s Position?

Three things, and the first is the one people miss.

It fixes effectiveness. Article 164(1) of the Housing Law 2023 provides that for a sale, lease-purchase, gift, exchange, capital contribution or mortgage of housing, the contract must be notarised or authenticated, and that for those transactions the time the contract takes effect is the time the notarisation or authentication is completed. Not the date typed at the top. Not the date of signature. The moment the notary finishes. Everything before that is an arrangement to do something; everything after is the thing itself.

It changes what the document is worth in evidence. Under the Law on Notarization — now Law No. 46/2024/QH15, in force since 1 July 2025 — a notarised document carries evidentiary value, and the facts recorded in it do not have to be separately proved unless a court declares the document void. A private agreement between two parties proves that two parties wrote something. A notarised deed proves considerably more, with considerably less argument.

And it puts an independent professional between you and a set of documents you cannot read. That is worth more to a foreign buyer than to a local one, which is the next section.

What Has to Be Verified About the Seller Before That Point?

The notary’s own process does a great deal of this, and it is worth knowing what it consists of so you can see what it does not cover.

Where a transaction has been drafted in advance, the Law on Notarization has the notary take the file — the draft contract, the parties’ identity papers, the ownership certificate and the other required documents — check those papers, and explain the rights, obligations and legal consequences to the parties. Where there is doubt about a party’s legal capacity, signs of coercion, or anything unclear, the notary requires clarification or verifies the position, and refuses if it cannot be cleared. A draft that breaches the law and is not corrected is refused. Originals are produced for comparison before the certification is signed.

Separately, the Housing Law sets conditions on the housing itself before it can be in a transaction at all. Article 160(1) requires a certificate, except in the listed cases; requires the housing to be free of dispute, complaint or litigation over ownership; requires it to be inside the ownership term where ownership is time-limited; requires it not to be distrained for enforcement of a judgment or an effective administrative decision, and not subject to an interim or preventive measure; and requires it not to be subject to a land-recovery decision or a clearance or demolition notice. Article 160(2) lists what can be transacted without a certificate — future housing among them.

So the professional check is real. What it is not is an underwriting opinion about whether the building is worth the money, whether the foreign-ownership room in it survives to registration, or whether this developer has ever issued certificates on a prior phase. Those are a separate sweep, and they belong before the deposit rather than at the appointment.

What Does the Contract Say About the Ownership Term?

It has to say it explicitly, and Article 163 of the Housing Law 2023 is the reason. That article sets out what a contract about housing must contain in writing, and among the eleven items is the term of ownership where ownership of the housing is time-limited.

For a foreign buyer that is not boilerplate, it is the asset. Foreign ownership of a dwelling runs up to 50 years from issuance of the certificate, extendable once on an application filed before expiry, and a later foreign buyer takes the years that remain rather than a fresh term. The 50-year clock is what you are buying a slice of, and the contract is where its length is recorded.

The same article requires several other things that repay reading rather than skimming. For an apartment, the contract must state the common ownership and common use areas, the building’s design-file service life, the privately owned usable area, the floor area of the apartment, the purpose of the common areas per the approved design, the management and operating service price where the first building conference has not yet been held, and the responsibility and level of the maintenance fund contribution together with the account it is paid into. It must state the payment term and method, the handover date, the warranty period on newly built housing, the rights and obligations of the parties, and the time the contract takes effect.

Every one of those is a number somebody can be vague about verbally and cannot be vague about on the page.

How Is the Purchase Price Recorded, and Why Does That Matter at Resale?

Article 163(3) requires the transaction price to be in the contract where the parties have agreed one. That figure then does two jobs at once, and the two pull in the same direction even though buyers often treat them as separate.

The first job is tax. Personal income tax on a real-estate transfer is computed on the transfer price — the Law on Personal Income Tax No. 109/2025/QH15, in force since 1 July 2026, sets it at 2% of the transfer price for a resident at Article 14 and the same 2% for a non-resident at Article 24(1). There is no deduction of purchase cost in that formula. Where a declared price sits below the provincial land price table, the tax rules provide for the assessment to be made on the table rather than the declaration, so the declaration is not the last word.

The second job is evidence. The price in the notarised contract is what you can later prove you paid and what you can later prove you received. A bank examining the source of funds on an outbound transfer is reading that document. A buyer’s lawyer three years from now is reading that document. A price recorded below what actually moved does not reduce the tax reliably and does reduce, permanently, what you can demonstrate about your own position.

Underwrite on the assumption that the contract price is the only price that exists. It is the one the system will use.

What Happens to a Deposit if the Contract Cannot Be Notarised?

That is Article 328 of the Civil Code 2015, and its default is symmetrical in a way most buyers do not expect.

A deposit is money or valuables handed over for a period to secure the conclusion or performance of a contract. Where the contract completes, the deposit is returned or set off against the price. Where it does not, the default depends on who walked: if the party who paid the deposit refuses to proceed, the deposit belongs to the recipient; if the party who received it refuses, that party returns the deposit and an equivalent sum on top, unless the parties agreed otherwise. Double back, by default, from the side that failed to perform.

The words carrying the weight are “unless otherwise agreed”, because deposit agreements routinely say otherwise. The practical instruction is short: put the conditions you actually care about into the deposit agreement as conditions, not as hopes. The building has room under the 30% foreign-ownership cap on the date of registration. The seller produces a clean certificate and the papers Article 160 requires. The contract is capable of being notarised. If any of those fails, the deposit returns in full. A failed gate should end in a refund rather than an argument, and that is a drafting outcome.

On off-plan stock there is a separate limit worth knowing: the Law on Real Estate Business 2023 caps the deposit a developer may take at 5% of the sale price, and that deposit counts inside a first instalment that may not exceed 30% of contract value.

How Does This Differ for a Developer Off-Plan Contract?

This is where the two statutes sit differently, and where most English-language guidance flattens a real distinction into a slogan.

The Housing Law does not contain a general exemption for buying from a company. Article 164(2) lists what escapes notarisation, and the organisation-party limb of that list is enumerated: sale and lease-purchase of housing that is public property, and sale and lease-purchase where one party is an organisation comprising social housing, housing for the people’s armed forces and resettlement housing. An ordinary commercial apartment bought from a developer is not named there.

The Land Law 2024 takes a different route at Article 27(3). Point (a) requires contracts transferring, donating, mortgaging or contributing land use rights, or land use rights together with land-attached assets, to be notarised or certified. Point (b) carves out leases and subleases, conversion of agricultural land use rights, and transfers or capital contributions of those rights or assets where one or all of the parties is a real-estate business organisation — for those, notarisation or certification happens at the request of the parties. Point (c) sends inheritance documents to civil law and point (d) sends the mechanics to the notarisation law.

So the answer turns on what is being transferred and by whom, and a first-hand purchase from a developer is not in the same position as a resale between two individuals. The instruction that follows is not a shrug, it is a specific thing to do: get your own Vietnamese lawyer to tell you in writing which provision governs your contract and what therefore fixes its effectiveness, before you sign it. On a first-hand purchase you should also be clear that a contract that is not notarised is still a contract — and that the developer’s obligation to lodge your certificate dossier within 50 days of handover, under Article 39(8) of the Housing Law 2023, runs regardless. The off-plan risk page takes the rest of that sequence.

What Language Does the Contract Exist In, and Which Version Governs?

Vietnamese. The Law on Notarization provides that the spoken and written language used in notarisation is Vietnamese, and that where a person requesting notarisation uses a language other than Vietnamese, it must be translated into Vietnamese.

The practical consequence is worth stating plainly, because bilingual drafts circulate widely and are reassuring in the wrong way. The notarised instrument is the Vietnamese text. An English column alongside it is a translation of that instrument, not a parallel version of it, and it is not what the notary certified. If the two ever diverge, the document that was notarised is the document that exists.

Which makes the translation a thing to control rather than accept. Have it done by someone working for you rather than for the counterparty, have it done before the appointment rather than at it, and read it against the eleven items Article 163 requires so you can see what is missing as well as what is present. A foreign buyer signing a Vietnamese instrument on the strength of a counterparty’s summary is the most avoidable exposure in the entire transaction.

What Should a Buyer Have in Hand Before the Appointment?

Eight things. None of them is exotic and all of them are easier to obtain before the appointment than to explain the absence of during it.

1. Your own identity and immigration papers, current. The passport the contract will name, valid, with the entry record the notary will check against it.
2. The seller’s certificate, and the Article 160 conditions confirmed. No dispute, no distraint, no recovery or demolition notice, and inside the ownership term where the term is limited.
3. The building’s foreign-ownership position in writing, dated. The 30% cap is tested when your dossier reaches the registry, not when a deposit is taken. How to check it is a page of its own.
4. A full draft of the contract, in Vietnamese, with your own translation. Read against the eleven contents Article 163 requires.
5. The deposit agreement, with its conditions written as conditions. So that a failed gate returns the money under Article 328 rather than starting a negotiation.
6. The banking arrangements already in place. Article 21(2)(c) of the Housing Law 2023 obliges a foreign owner to pay for the purchase through credit institutions or foreign bank branches operating in Vietnam, and the Law on Real Estate Business 2023 governs payment on the business side at Article 48. A payment made outside that channel also leaves no record for the day you sell.
7. A written answer on who lodges the certificate dossier. Article 162(2) of the Housing Law 2023 has the parties agree which of them files it, and makes the developer responsible on a purchase from a project unless the buyer volunteers.
8. Your own Vietnamese lawyer, instructed before the appointment rather than after it. I underwrite assets; I am not licensed to act on a Vietnamese conveyance and this page is not a substitute for someone who is.

Get those eight and the appointment is an administrative event, which is exactly what it should be. The transactions that go wrong in Vietnam almost never go wrong at the notary. They go wrong weeks earlier, when a deposit moved against a verbal assurance about a building nobody had checked, and the appointment is simply where that becomes visible.