Building a rock-solid tenant file in Belgium

In a tight market like Brussels, Ghent or Leuven, a decent flat attracts dozens of applications within forty-eight hours. The landlord does not read forty files: they discard thirty-five on a mechanical criterion, incomplete, unreadable, income not evidenced, and read the five that remain. So your goal is not to be the perfect candidate. It is to be the candidate who can be assessed in three minutes.

Whether the listing is on Immoweb, on Immovlan or on a peer-to-peer rental site with no intermediary such as Domilinko, where the owner's identity and each listing's energy performance certificate (EPC) are verified, the mechanics are the same: a clean file, and the right document at the right time.

Compatri does not let housing and plays no part in your lease: this guide helps you understand your rights and find the right people to talk to.

What the landlord may ask you, and when

The dividing line is simple: the landlord may check your solvency; they may not profile you. All three Regions have spelled out what may be asked, and sometimes when.

In Brussels, the list is closed:

• before the viewing: your surname and first name, and a way of contacting you;
• in support of the application: the amount of your financial resources (or an estimate) and the number of people in the household;
• to draw up the lease: a document proving your identity and capacity to contract, and your civil status if you are married or legally cohabiting.

Nothing else may be asked. The Region publishes a standard application form based on this list.

In Wallonia, the landlord may ask, with supporting documents, for: your surname and first name, a means of communication, your address, your date of birth (or proof of capacity to contract), household composition, your civil status if married or legally cohabiting, the amount of your resources and proof of payment of your last three rents. Any other data must serve a legitimate purpose and be justified by serious, proportionate reasons.

In Flanders, the landlord may only ask for the documents needed to check that you will be able to meet your obligations as a tenant: before a viewing, only practical details (name, phone number, e-mail); after that, for example, your address, civil status, household composition, and income or proof of solvency.

In all three Regions, what counts is the amount of your income, not where it comes from.

What a good file contains

A Belgian tenant file rests on three blocks: who you are, what you earn, how you behaved as a tenant.

Your identity. A valid identity document (Belgian ID card, residence permit, passport). Do not attach it by default: in Brussels it may only be asked for when the lease is drawn up. If you send a copy, mask the national register number: a landlord does not need it to pick a candidate.

Your income. This is the heart of the file.

• Employee: your last three payslips. An employment contract or employer's certificate (permanent, fixed-term, probation, monthly net pay) can reassure, but in Brussels only the amount of your resources may be required.
• Self-employed: your most recent tax assessment notice (avertissement-extrait de rôle / aanslagbiljet), optionally backed by an accountant's statement.
• Pensioner, benefit recipient, grant-holding student: a certificate from the paying body is enough to establish an amount. On bank statements, you may black out the payer's identity.

Your rental history. Proof of payment of your last three rents (receipts, or bank statements with the rest redacted): a Walloon landlord may ask for it; elsewhere you can offer it. And, if you can get one, a reference from your previous landlord confirming that you paid and returned the property in order. It is the most under-used document, and often the decisive one: it turns a promise into a track record.

Add, where relevant: the real number of occupants, and a guarantor's commitment with their own documents if your income is tight.

What a landlord may not demand

This is where many applicants, and many landlords, get it wrong. The following cannot be required of you:

• a criminal record extract or certificate of good conduct;
• health data: state of health, disability, pregnancy, ongoing treatment;
• the origin of your income, once the amount is established. Rejecting a candidate because their means come from a benefit, maintenance payments or the public welfare centre rather than a salary is discrimination on the ground of wealth;
• information about your origin, religion, sexual orientation, family plans (pregnancy, plans for children, divorce) or union membership;
• full, unredacted bank statements exposing your entire spending pattern.

The landlord may, on the other hand, ask how many people will live in the property: occupancy drives housing-quality standards and charges. They may not use it as a pretext to exclude families with children.

If you think you were turned down on discriminatory grounds, report it to Unia; in Brussels, the regional housing inspectorate can also run discrimination tests and impose an administrative fine. Our guide to housing discrimination sets out the remedies.

Finally, the GDPR applies. The files of unsuccessful candidates must not be kept longer than necessary, nor archived "just in case". You are entitled to ask for their deletion.

The income-to-rent ratio: a custom, not a law

The one-third rule, rent should not exceed a third of the household's net income, is a banking and professional custom, not a legal norm. No Belgian text forbids letting to someone whose rent represents 40 % of their income, and Unia has in fact criticised this "three times the rent" rule as out of step with the real market. But it is the mental filter of many landlords, and you are better off addressing it head-on than ignoring it.

Concretely: for a rent of €900 all-in, a landlord will instinctively look for a household around €2,700 net. If you are at €2,300, you are not out, you simply need to close the gap explicitly:

• add up the income of every occupant (a couple's two salaries, a grant plus a student job);
• mention stable, recurring income that a payslip does not show (maintenance received, rental income, child benefit);
• offer a solvent guarantor, with their documents ready, or a rental deposit paid in one go;
• show that you have already been paying a comparable rent for two years, with receipts. A payment history beats a projection.

What sinks a file is almost never an average ratio: it is a vague one.

Form matters as much as substance

A winning file fits in a single send. Clearly named PDFs, in order, with a half-page cover note: who you are, how many of you, what you earn in total, from when you can move in, and why this particular property. Two paragraphs, not a cover letter. And prepare the meeting itself: our guide to a successful viewing helps.

Three recurring mistakes:

New to Belgium?

No Belgian payslips yet, and no rent paid here? It is not a deal-breaker, but you need to compensate: an employment contract or offer letter, a grant certificate, translated proof of income if it comes from abroad, a rental deposit paid in one go, or help from the welfare centre. Handle your administrative steps on arrival at the same time, and consider flat-sharing, for instance through Appartager, often easier for a first home. Our guide to finding a home in Belgium covers the options.

In short

Gather your ID (without sending it too early), three payslips or your tax assessment notice, proof of your last rents and, if possible, a reference from your previous landlord. Check what your Region allows a landlord to ask, and when. Politely refuse the criminal record, medical data and questions about where your money comes from: the law is on your side. Treat the one-third ratio as an obstacle to document, not a verdict. And build your file properly once: you will reuse it.

Official sources

• Discrimination in the rental market (be.brussels): what a Brussels landlord may ask, step by step.
• Brussels standard application form (Brussels Housing, PDF in French): the official template.
• Vóór het sluiten van de huurovereenkomst (Vlaanderen.be, in Dutch): what a Flemish landlord may ask.
• Walloon decree on residential leases (Wallex, in French): the data a Walloon landlord may request.
• Discrimination on the basis of wealth (Unia): replacement income, welfare support and how to complain.