How much of a down payment should you make for construction work?

You have received a quote for €12,000, €35,000 or €80,000 and the contractor is asking for a down payment before starting.

10%? 20%? 30%? 50%?

The question seems simple: What is a normal down payment for construction work?

In reality, there is no universal European percentage that applies to all projects. The rules differ depending on the country, the contract and the type of work.

But there is a rule of thumb that works almost everywhere: the more you pay before the corresponding work or materials actually exist, the more financial risk you transfer from the contractor to yourself.

A down payment is not necessarily a cause for concern. It can be used to book the project, order specific materials or mobilise a team.

On the other hand, paying €15,000 on a €30,000 project before a single hammer has been swung warrants a few checks.

Here is how to approach it in 2026.

1. Why does a contractor ask for a down payment?

A contractor sometimes incurs expenses before they even arrive at your property: custom-made windows, tiles, scaffolding, a heat pump, a supplier deposit, a crane or booking teams.

Asking for a down payment is not a bad sign in itself. The real question is: is the amount requested proportionate to the costs the company actually has to commit to?

A 30% down payment may be understandable for window frames made specifically for your home. It is much harder to justify for three days of painting with very few materials.

2. 10%, 20%, 30%: what is reasonable?

Outside of specific legal frameworks, a distinction must be made between commercial practice and legal obligation. There is no general rule across the European Union stating: 'the down payment for construction work must be 30%'.

In practice, requests are frequently in the range of 10% to 30%, depending on the trade and the materials to be ordered. However, this is not a European legal standard.

Project of €10,000: 10% = €1,000; 20% = €2,000; 30% = €3,000; 50% = €5,000.

Project of €50,000: 10% = €5,000; 20% = €10,000; 30% = €15,000; 50% = €25,000.

At 50%, the client has already paid for half of the project before even knowing what will actually be done, if the payment is made before work begins.

3. The right down payment depends mainly on what needs to be ordered

Rather than asking 'What percentage is normal?', ask the contractor this question: 'What will my down payment be used for?'

PROJECT A — PAINTING: a €20,000 project, materials needed before starting cost around €2,000, down payment requested is €10,000. This requires an explanation.

PROJECT B — CUSTOM-MADE WINDOWS: a large part of the price corresponds to frames made specifically for the client and ordered several weeks before installation. A larger down payment can be much more understandable.

The same percentage therefore does not have the same meaning depending on the trade.

4. Belgium: be careful not to confuse standard renovation with the Breyne Act

You sometimes hear: 'In Belgium, a contractor can never ask for more than a 5% down payment.' This is false.

The 5% rule applies to contracts that fall under the scope of the loi Breyne, particularly certain constructions or sales of homes to be built. Under this system, the advance paid when the contract is signed cannot exceed 5% of the total price, and subsequent payments must be staggered and not exceed the value of the work already completed.

For an ordinary renovation contract with a contractor in a home you already own, the loi Breyne generally does not apply. The type of contract therefore determines the rule.

5. Belgium: an example at €100,000

For a €100,000 project that does fall under the loi Breyne, the maximum advance upon signing the contract is €5,000.

The remainder is not simply payable whenever the contractor wishes: subsequent instalments cannot exceed the value of the work already completed.

Do not automatically apply this rule to your quote for roofing, a bathroom or painting.

6. France: do not look for a 'legal percentage of 30%'

In France, too, you should be wary of statements like: 'The legal down payment for construction work is 30%.'

For ordinary work, the issue should primarily be examined through the quote, the contract, the payment terms and consumer protection rules.

A 30% request is not automatically unfair or normal simply because it corresponds to a commercial practice. You need to look at what it finances and what the contract stipulates.

7. Germany: the logic of payments based on progress

§ 632a of the Bürgerliches Gesetzbuch (BGB) provides, among other things, that the contractor may claim interim payments corresponding to the value of the contractual services already performed. Rules also exist for certain materials or components that are delivered or specially manufactured.

The logic is interesting for any European consumer: pay based on what actually exists.

The German Verbraucherzentrale also recommends defining the scope of the work, the payment and the deadlines as precisely as possible, preferably in writing.

8. Spain: the 'presupuesto' must be taken seriously

In Spain, the rules can also be supplemented at a regional level.

In Madrid, for example, the consumer protection authorities state that for relevant domestic renovation work, the consumer is entitled to a written 'presupuesto previo' which includes the company's identification, the materials, their quantity and quality, the cost of labour, the total price including taxes, and the approximate start and end dates.

Before paying a large sum to a Spanish company, get a sufficiently detailed written document and check the payment terms. Do not transfer several thousand euros based solely on a WhatsApp exchange.

9. Netherlands: keeping a portion of the price until proper completion

Under the Dutch system for certain types of construction, the consumer can hold back 5% of the construction price with the notary to have leverage regarding any remaining defects to be corrected.

This mechanism illustrates an important principle: the client should not lose all financial leverage before the work is properly completed.

10. And in Italy, Portugal or elsewhere in Europe?

You should avoid publishing a false table claiming Belgium = 30%, France = 30%, Spain = 20%, Italy = 30%, Portugal = 20%.

This type of table often mixes commercial habits with legal rules. In 2026, there is no 'official European rate' for down payments on construction work.

Depending on the country, the nature of the contract, the type of construction and the specific conditions, the rules can be very different.

For ECV, the best approach is to distinguish between what the law allows, what the contract stipulates, what is common practice, and what is financially prudent for the client.

11. The down payment must be clearly stated in the quote or contract

Avoid: 'Pay me €8,000 and I'll book the project for you.'

Prefer a document that clearly states: Total price: €32,000 incl. VAT; down payment on order: €6,400; second instalment; third instalment; final balance.

In Belgium, the FPS Économie points out that the quote must specify the details and nature of the services and supplies, the price or how it is determined, its date, its validity period and the estimated duration of the service.

12. The real danger: paying faster than the project progresses

Take a €60,000 project. After two weeks, you have paid €45,000, but only about €18,000 worth of work and materials are actually present on site. You have financed a considerable advance.

If the company then runs into financial difficulty, the balance of power becomes very unfavourable for you.

Conversely, if the work completed is worth around €30,000 and the sums paid amount to €25,000, your position is much more comfortable.

Therefore, as far as the contract and the nature of the orders allow, try not to let your payments get disproportionately ahead of the value actually created.

13. Beware of '50% now, 50% on completion'

On an €80,000 project, this means €40,000 before or at the start of the work.

For some projects requiring a great deal of custom-made equipment, this may be justified. For others, it is a considerable amount.

A progressive payment schedule may be preferable: 10% on order, 25% after an identifiable stage, 25% after the next stage, 30% at an advanced stage, and 10% at the term specified in the contract.

This is just an example of a structure, not a legal rule. The important idea is to link payments to verifiable milestones.

14. 'I have to pay for the materials': ask which ones

This is a perfectly plausible justification. But ask: which materials? What is the cost? Are they being ordered specifically for my project? When will they be delivered?

For a custom-made kitchen or windows, the answer will usually be very specific. For a light renovation, it may be much less so.

A client who pays €12,000 to finance a specific order of €11,000 is not in the same situation as one who pays €12,000 to finance a few hundred euros' worth of supplies.

15. The larger the down payment, the more thorough your checks should be

If you are asked for €500, the risk exists but remains limited. If you are asked for €25,000 before the work begins, the level of verification must change.

Before paying a large sum, you should check the exact identity of the company, its legal existence, the bank account used, the consistency between the account holder and the contracting party, the signed quote, the general terms and conditions, the project address, the materials ordered, the payment schedule and the relevant insurance depending on the country and the project.

The extent of your checks should be proportional to the amount you are risking.

16. Belgium: professionals, also think about Article 30bis

For companies and certain professional clients in Belgium, another check is particularly important.

In the relevant activities, particularly certain property works, it is necessary to check whether the contractor or subcontractor has social security or tax debts that could lead to an obligation to withhold payment on the invoice.

The withholding obligation does not apply to a private individual having work carried out for strictly private purposes.

For a Belgian company having work carried out, paying an invoice in full without having carried out the necessary checks can have significant financial consequences.

17. Is a very high down payment a red flag?

Not automatically. But it warrants an explanation.

Example: a quote for €45,000, a down payment of €22,500, installation scheduled in four months. Ask: why 50%?

If the company can show that it must immediately order €20,000 worth of custom-made windows, the situation becomes understandable. If the answer is 'That's just how we do things', you have much less information to assess the risk.

A high down payment is not necessarily abnormal. An unexplained high down payment is much more concerning.

18. Be particularly wary of payment to a different account

The quote is from COMPANY ABC LTD, but the contractor asks you to pay €15,000 into the personal account of Mr X, into that of another company, or into a foreign account without explanation.

This does not automatically mean it is fraud. But do not pay without understanding and documenting the reason.

The recipient of the payment must be consistent with your contractual relationship.

19. Do not make a second down payment because 'the first one is gone'

You have already paid 30%. A few days before the project is due to start, the contractor announces: 'The supplier is demanding more than expected, I need another 20%.' Your down payment suddenly goes from 30% to 50%.

Do not reason: 'I've already paid 30%, so I have to continue.'

This is precisely the time to re-read the contract and ask for proof. A significant change in financial terms deserves a written explanation.

20. A down payment should never stop you from thinking

Some sales pitches use urgency: 'You have to pay today to keep the price', 'I have one last slot in the schedule', 'The price of materials is going up tomorrow'.

This can sometimes be true. But a €30,000 or €100,000 project deserves more than a decision made under pressure.

21. The best system: paying for visible stages

For a sufficiently large project, a payment schedule linked to concrete stages is often clearer: signing, ordering of custom-made elements, start of work, structural work completed, technical installations completed, finishing, then the final balance according to the contractual terms.

Each payment then corresponds to something the client can identify.

This is much more transparent than 30% now + 40% in 30 days + 30% later, regardless of the actual progress.

22. The question to ask before each payment

Before paying €5,000, €10,000 or €25,000, simply ask yourself: 'WHAT EXACTLY IS THIS PAYMENT FINANCING?'

If the answer is custom-made windows that have already been ordered, a completed phase of work, or identified and delivered materials, you have a concrete justification.

If the answer is simply 'because it's in the schedule', look at the contract again.

23. The most frequent Google searches on down payments for construction work

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These searches show that the consumer is not just looking for a percentage. They are mainly trying to find out: 'HOW MUCH CAN I PAY WITHOUT TAKING AN EXCESSIVE RISK?'

24. ECV: check the quote before paying the money

The most important time to analyse a project is not when problems appear. It is before the first payment.

A quote can be analysed from several angles: the amount of the down payment, the payment schedule, the price, the services, the materials, the technical consistency, the identity of and available information about the company.

This is precisely the logic of Euro Construct Verify – ECV.

Because after paying €20,000, your question becomes: 'How do I get my money back if something goes wrong?' Before you pay, the question is much simpler: 'Is it safe enough for me to pay this money?'

Conclusion: do not look for a magic percentage

10%, 20% or 30% are not automatically good or bad. And 50% is not automatically fraudulent.

It all depends on the country, the type of contract, the materials to be ordered, the progress of the project, the legal protections and what your payment is actually financing.

The right rule is therefore not: 'Never pay more than X%.'

The right method is to understand why the money is being requested, check what justifies it and, as far as possible, avoid your payments getting disproportionately ahead of the project.

On a €100,000 project, the difference between a 10% and a 50% down payment represents an additional €40,000 at risk before the project is even sufficiently advanced. This is no longer an administrative detail. It is a financial decision.

Useful official sources

• Belgium — FPS Économie: Loi Breyne and rules relating to quotes.
• Belgium — Social Security / withholding obligations under the article 30bis for relevant situations.
• Germany — § 632a BGB: interim payments (Abschlagszahlungen).
• Germany — Verbraucherzentrale: recommendations relating to construction contracts.
• France — DGCCRF: information on prices and rules relating to quotes.
• Spain — consumer protection authorities, including Comunidad de Madrid: 'presupuesto previo' for certain renovation works.
• Netherlands — official information on consumer protection and the 5% retention in certain constructions.
• European Union — consumer protection rules and pre-contractual information obligations.