Buying property in Portugal involves a specific legal process with steps that do not exist in most other countries. There is no standardised conveyancing system, no Law Society protocol, and no completion exchange as British buyers know it. Instead, there is a sequence of contracts, checks, and registrations that must happen in the right order, with the right documents, or the sale can fall apart. Understanding how this works from the legal side is the difference between a smooth purchase and an expensive mistake.
Getting your NIF before anything else
Before you can sign any contract or transfer any money, you need a NIF (Numero de Identificacao Fiscal). This is your Portuguese tax number, and it is required for every official transaction. EU citizens can apply directly at a Financas office. Non-EU citizens need a fiscal representative: a Portuguese tax resident, often a lawyer, who receives official correspondence on your behalf.
Many buyers try to get their NIF and sign a contract on the same trip. This creates unnecessary pressure. Financas offices in the Algarve are busy, especially in summer, and delays can push back the entire purchase. Getting your NIF weeks before you plan to buy removes this bottleneck. If you are working with a lawyer, they can handle the NIF application remotely before you arrive.
The CPCV: what the promissory contract actually commits you to
The CPCV (Contrato de Promessa de Compra e Venda) is the promissory contract that commits both buyer and seller to the sale. It is not a reservation or an expression of interest. It is a legally binding agreement that sets the price, the deposit, the completion deadline, and the conditions of the transaction.
When you sign the CPCV, you typically pay a deposit of 10 to 30 percent of the purchase price. Under Portuguese law, this deposit is governed by specific rules. If you, as the buyer, walk away without cause, you lose the deposit. If the seller pulls out, they must return double the deposit amount. These are not negotiable clauses. They are default legal provisions under Portuguese civil law.
The CPCV should spell out every material term: which fixtures are included, the condition the property must be in at completion, what happens if there are delays, and any outstanding issues the seller must resolve before the deed. A well-drafted CPCV protects you. A vague one leaves you exposed.
Due diligence: what your lawyer checks before you commit
Due diligence in Portugal is not a single document check. It is a series of verifications across multiple registries and municipal records. Your lawyer will typically check the following before you sign the CPCV or, at the latest, before the deed.
The caderneta predial is the fiscal description of the property held by the tax authority. It shows the registered area, the property type, the tax valuation (VPT), and whether there are any outstanding tax debts against the property. If the property has been altered or extended, those changes should be reflected here. If they are not, the property may have unauthorised construction.
The certidao de registo predial is the land registry certificate. It confirms who owns the property, whether there are mortgages, liens, or encumbrances registered against it, and whether any legal proceedings affect it. A clean land registry is essential. If there is a charge on the property that the seller has not disclosed, you need to know before you pay.
Beyond these two core documents, your lawyer checks the property's licenca de utilizacao (use licence), which confirms the property is legally approved for the use you intend. A building approved as a warehouse cannot legally be used as a residence. They also check whether the property is in a protected zone, subject to pre-emption rights by the local council, or affected by any planned infrastructure (a new road, a coastal protection zone, an urban development plan).
For apartments, there is an additional layer: the condominium. Your lawyer reviews the condominium minutes and accounts to check for outstanding debts, planned works, or disputes that you would inherit as the new owner.
IMT and Stamp Duty: what you pay on top of the price
When you buy property in Portugal, two taxes apply at the point of purchase. IMT (Imposto Municipal sobre Transmissoes Onerosas de Imoveis) is the property transfer tax. For non-residents buying in 2026, the rate is 7.5 percent flat on the purchase price. For residents, a sliding scale applies, with properties under a certain threshold partially or fully exempt.
Stamp Duty (Imposto de Selo) is a fixed 0.8 percent on the purchase price, payable by all buyers regardless of residency status.
Both taxes must be paid before the deed. Your lawyer calculates the amounts, generates the payment references, and ensures the tax receipts are ready for the notary. If the taxes are not paid before the deed, the notary will not proceed.
The escritura: the notarial deed
The escritura (public deed) is the moment ownership legally transfers. It takes place at a notary's office, a land registry office, or a solicitor's office (solicitador). Both buyer and seller, or their legal representatives holding powers of attorney, must be present.
The notary reads the deed aloud, confirms the identities of both parties, verifies that all taxes have been paid, and registers the signatures. Once signed, the notary submits the deed for registration at the land registry. At this point, you are the legal owner.
If you cannot attend the deed in person, your lawyer can represent you under a power of attorney (procuracao). This is common for international buyers and is perfectly standard in Portuguese property law, provided the power of attorney is properly notarised and apostilled in your home country.
After completion: what happens next
Signing the deed is not the end of the process. After completion, the property must be registered in your name at the land registry and at the tax authority. Utility contracts (water, electricity, gas) need to be transferred. If you are planning to rent the property, you may need an Alojamento Local licence. And your annual tax obligations begin: IMI (municipal property tax) is due every year, and if you are renting, the income must be declared.
Your lawyer handles the immediate post-completion registrations and can advise on the ongoing obligations. Many buyers underestimate this phase. The deed may be signed, but the administrative trail continues for weeks.
What goes wrong without legal support
The most common problems in Algarve property transactions are preventable. Buyers who skip due diligence discover liens after completion. Buyers who sign a CPCV drafted by the seller's agent find the terms are one-sided. Buyers who do not check the licenca de utilizacao find their "residential" property is registered as agricultural land. And buyers who do not get their NIF early enough miss their completion deadline and risk losing their deposit.
None of these are rare. They happen regularly, and they are expensive to fix after the fact. A property lawyer in the Algarve who knows the local registries, the local notaries, and the local market can catch these issues before they become your problem.