How to Buy a House in Belgium

Most expats landing in Belgium assume the property purchase process works roughly like it does at home — a provisional offer, a period of due diligence, and a formal exchange of contracts. That assumption is expensive to hold. The Belgian system runs on civil law, not common law, and the consequences of misreading even the first document you sign can lock you into a purchase you cannot exit without losing tens of thousands of euros.

This guide walks through the full purchase process as it actually works in Belgium in 2025–2026, from the initial search through to getting your keys.

Can foreigners buy property in Belgium?

Yes, fully and without restriction. Belgium imposes no nationality-based limits on property ownership. There are no minimum purchase thresholds, no government authorisation requirements, and no geographic exclusions. A non-EU citizen living in Asia can legally purchase a Brussels apartment as a non-resident investment without ever establishing Belgian residency.

The friction for foreign buyers is not legal — it is administrative and financial. Non-residents regularly face more rigorous anti-money laundering due diligence from the notary, and banks typically require a larger down payment from foreign borrowers (20–30% versus the 80–90% loan-to-value that Belgian residents can access).

If you do not yet have a Belgian national register number, the notary will arrange for you to receive a BIS number — an 11-digit identifier assigned to non-residents who need to interact with Belgian tax authorities. This is required before the final deed can be registered.

The Belgian property purchase process: four stages

Stage 1 — Finding a property and making an offer

The main Belgian property portals are Immoweb and Immovlan. Once you identify a property, you typically make an offer through the estate agent, often in writing via email. Here is the critical point that trips up most Anglo-Saxon buyers: a written offer accepted by the seller is already legally binding in Belgium. You do not need to sign a formal contract for the obligation to crystallise. If you type "I offer €400,000 for the property" and the seller replies "I accept," the sale is conceptually complete.

This means you should never make a written offer unless you are genuinely prepared to proceed.

Stage 2 — The compromis de vente (90 days before the deed)

Once an offer is accepted, both parties sign the compromis de vente (French) or onderhandse verkoopovereenkomst (Dutch) — the preliminary private sale agreement. Under Belgian law, "compromis vaut vente": the compromise equals the sale. The notarial deed signed months later merely authenticates and registers a transaction that has already legally occurred.

There is no statutory cooling-off period for standard residential property purchases in Belgium. Buyers who sign expecting the French-style 10-day right of withdrawal are mistaken. The 14-day consumer protection cooling-off right applies only to distance contracts, not to property agreements signed at an office or agency after a physical viewing.

The standard way buyers protect themselves is through a suspensive condition for financing (condition suspensive d'obtention de crédit). This clause — which should be in every compromis if you need a mortgage — gives you 20 to 30 days to secure a formal mortgage offer. If your bank rejects the application, and you can provide written proof of rejection from multiple lenders, the contract is voided without penalty. Without this clause, if your financing falls through, you are still bound to buy.

At the compromis stage, the buyer also pays a 10% deposit, held in the notary's blocked escrow account — never transferred directly to the seller. If you withdraw from the purchase without a valid contractual reason, the seller is entitled to retain that 10%.

Stage 3 — The four-month interim period

After the compromis is signed, the notary takes over. Belgian law mandates that registration duties must be paid within four months of the agreement, so the maximum gap between compromis and final deed is four months, with the typical range being 90 to 120 days.

During this period the notary:

• Searches the mortgage registry for undisclosed debts or charges on the property
• Verifies urban planning permits and checks for illegal extensions
• Obtains the soil contamination certificate (Bodemattest in Flanders)
• Coordinates with the buyer's bank to draft the mortgage credit deed
• Confirms the Energy Performance Certificate (EPC/PEB) is valid and in order

If you are buying an apartment, the notary also requests the syndic's financial records — including the reserve fund balance, any upcoming extraordinary charges voted by the co-owners' assembly, and the seller's payment arrears. Older Brussels and Antwerp apartment buildings can harbour €20,000–€50,000 in upcoming works that legally transfer to you on the day you sign. Reviewing these documents before the compromis, not after, is strongly advised.

Stage 4 — The acte authentique (final deed)

The transaction concludes at the notary's office with the signing of the acte authentique (French) or authentieke akte (Dutch). Both buyer and seller (or their representatives) sign in the presence of the notary. At this point:

• The remaining 90% of the purchase price is transferred via the notary's accounts
• Registration duties and all notary fees are paid
• The notary files the deed at the Hypotheekkantoor (Mortgage and Registration Office)

Once filed, legal title passes to you officially and irrevocably.

Remote signing: If you cannot be physically present in Belgium, the Belgian notarial system supports digital power of attorney via secure video conference and advanced electronic signature. A trusted clerk at the notary's office signs on your behalf.

Regional differences that determine your tax bill

Belgium is a federal state, and property taxation is fully devolved to three regions: the Flemish Region, the Walloon Region, and the Brussels-Capital Region. The registration duty — the main property transfer tax — varies enormously by region.

Flanders (primary residence): 2% since January 2025, down from 6%. Stricter qualification conditions apply from January 2026, including a one-year uninterrupted domicile requirement.

Wallonia (primary residence): 3% since January 2025, a dramatic reduction from the previous 12.5%. You must establish primary residency within three years and maintain it for at least three consecutive years.

Brussels-Capital Region: 12.5% on all properties. An abatement mechanism exempts the first €200,000 of the purchase price from taxation — saving up to €25,000 — but only if the total purchase price does not exceed €600,000, and only if you do not already own residential property anywhere in the world in full ownership.

On a €400,000 family home, this means:

• Flanders: €8,000 in registration duties
• Wallonia: €12,000
• Brussels (with abatement): €25,000
• Brussels (without abatement): €50,000

Crossing a regional border by a few hundred metres changes the outcome by tens of thousands of euros.

How long does it take to buy a house in Belgium?

The period between signing the compromis and receiving keys is typically 90 to 120 days. If you include the time to find a property, make an offer, and negotiate the compromis, the realistic end-to-end timeline for most expat buyers is four to six months. Complex transactions — off-plan purchases, properties with urban planning complications, or cross-border mortgages — can extend to nine months.

Key documents to organise before you start

• Passport or national identity card
• Last three years of tax returns
• Three to six months of payslips
• Proof of down payment funds and their origin (for AML compliance)
• If non-resident: proof of income and employment contract

Your notary will instruct you on any additional documentation specific to your situation and nationality.

Getting the right support

Both buyer and seller have the right to appoint their own independent notary in Belgium, and crucially, doing so does not increase the total cost — the single fixed fee is simply split 50/50 between the two offices. Given the irreversible consequences of signing a compromis without understanding it, appointing your own notary before you make any written offer is one of the most valuable steps an expat buyer can take.

For a complete walkthrough of the Belgian buying process — including regional tax calculations, mortgage checklist, syndic due diligence questions, and EPC obligations by region — the Belgium Expat Property Guide covers every stage in detail.

See more Belgium guides →