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Is there an insurance policy that guarantees the successful completion of a building project?

Published on August 27, 2026

Bankruptcy, abandoned sites, budget overruns, poor workmanship: which insurance policies and guarantees truly protect the client, and what they don't cover.

Signing a construction or renovation quote can mean committing to tens, or even hundreds, of thousands of euros.

And one question is coming up more and more often:

"Is there an insurance policy that protects me if the contractor goes bankrupt, abandons the site, goes significantly over budget, or if the work is poorly executed?"

The answer, unfortunately, is not as simple as you might think.

Various insurance policies, financial guarantees, ten-year liability policies and protection schemes exist across Europe. But there isn't a single, universal insurance policy that automatically covers all the nasty surprises a building project can bring.

This is precisely one of the problems that ECV – Euro Construct Verify aims to address.

What is a "completion guarantee"?

From a consumer's perspective, a completion guarantee should ideally step in when a building project doesn't go as planned.

  • The company's bankruptcy or insolvency;
  • Abandonment of the site;
  • Unfinished work;
  • The contractor disappearing after a down payment has been made;
  • Major defects;
  • Work not conforming to the quote;
  • Different materials used from those specified;
  • The need to bring in another company;
  • Additional costs required to finish the work.

But be warned: these risks are not usually all covered by a single insurance policy.

It is important to distinguish between a contractor's public liability, ten-year liability insurance, structural damage insurance in some countries, bank guarantees, surety bonds and genuine completion guarantees.

Belgium: protections exist, but they don't cover everything

In Belgium, you can benefit from several protection mechanisms.

For certain property works that require the mandatory involvement of an architect, the professionals involved may be required to have insurance covering their ten-year liability.

But it is essential to understand one thing: ten-year liability does not mean a guarantee of project completion.

If your contractor abandons a site after you have already paid 40% or 50% of the total amount, their liability insurance will not necessarily refund the money you have lost.

The situation is different when the project falls under the scope of the Breyne Act, particularly for certain new builds or property sales. This act provides for specific protections and, depending on the contractor's status, financial guarantee mechanisms.

But not all renovation projects automatically fall under this regime.

France: structural damage insurance is important, but it's not anti-bankruptcy insurance

France has a relatively well-developed system when it comes to construction insurance.

This includes the builders' ten-year guarantee, structural damage insurance (assurance dommages-ouvrage), various guarantees linked to construction contracts and, in some arrangements, delivery or completion guarantees.

Structural damage insurance, when legal conditions are met, can speed up compensation for certain damages covered by the ten-year guarantee without waiting for a court to definitively assign liability.

But structural damage insurance does not automatically mean a full refund of all down payments if a company disappears.

For certain contracts for the construction of a single-family home, however, the consumer benefits from specific delivery guarantee mechanisms. It is therefore essential to identify the exact type of contract you have signed.

Luxembourg: check the contract and financial guarantees

In Luxembourg, various mechanisms can protect the client, depending on the nature of the project and the contract used.

In major property developments, financial or bank guarantees may be provided.

For a standard renovation project, however, you should never assume that an insurance policy will automatically cover site abandonment.

Before signing, ask clearly: "Who pays if the company disappears before the work is finished?"

If no one can give you a precise answer, assume that the risk probably remains with you.

Netherlands: guarantees and schemes related to the type of construction

In the Netherlands, various contractual guarantees and guarantee schemes exist in the construction and housing sector.

However, the level of protection depends heavily on the type of project, the company, the contract and any scheme to which the company may be affiliated.

For a consumer, it is therefore important to check whether the project genuinely benefits from a guarantee against insolvency, defects or non-completion, or only against certain technical damages.

A company claiming to belong to a guarantee scheme must be able to prove it.

Germany: a "Fertigstellungsgarantie" can be worthwhile

Germany has various Bürgschaft mechanisms, which are a form of surety or financial guarantee.

These can include guarantees relating to the performance or completion of the work.

A Fertigstellungsbürgschaft (completion bond) or a comparable guarantee can be a valuable protection when the contract and the guarantee have been structured correctly.

But of course, not all companies offer this mechanism.

For major works, requesting a bank guarantee or a surety bond can therefore be much more effective than a simple reassurance like: "Our company has been around for twenty years, you're not taking any risks."

A company can be in business for twenty years and run into financial difficulties in its twenty-first.

Spain: beware of down payments and small companies

In Spain, protections also depend heavily on the type of construction and contract.

In certain property developments, particularly the construction and sale of new homes, specific mechanisms exist to protect the sums paid in advance by buyers.

But for renovation work in a private home, the situation can be very different.

Kitchen, roof, swimming pool, terrace, facade, air conditioning, solar panels or a complete renovation: a large down payment can become extremely difficult to recover if the company disappears.

A simple precaution is to limit advance payments and link them to verifiable stages of the project.

Portugal: don't confuse professional insurance with a completion guarantee

In Portugal, too, professional indemnity insurance should not be confused with a genuine financial guarantee that allows the project to be completed if the company defaults.

On large projects, it may be wise to contractually provide for stage payments, retention money, guarantees, precise handover conditions and possibly a surety bond or a suitable financial mechanism.

Italy: guarantees depend heavily on the type of project

In Italy, various guarantee mechanisms exist, particularly in certain property developments and sales of properties yet to be built.

For a standard renovation, however, caution is still essential.

A professional or ten-year liability insurance policy should never be automatically interpreted as a guarantee covering "everything that could possibly go wrong with my project".

You must read the terms of the contract and the insurance policy.

Switzerland: contractual soundness above all

In Switzerland, contractual guarantees, surety bonds and insurance can offer significant protection.

But, as elsewhere, their effectiveness depends on what has actually been agreed.

For a major project, the question should not only be: "Is the company insured?" but rather: "What financial guarantee is in place if this company can no longer finish my project?"

United Kingdom: specific guarantees can supplement insurance policies

In the United Kingdom, various systems of warranties, insurance-backed guarantees and specific protections can apply in the construction sector.

However, the cover depends on the specific policy taken out.

Some guarantees cover construction defects, others certain contractual failures or the insolvency of a provider.

You must therefore examine the exclusions and limits before considering the project to be truly protected.

France, Belgium, Luxembourg: beware of the word "insured"

A contractor might tell you: "Don't worry, we are fully insured."

This statement means almost nothing without documentation.

  • The name of the insurer;
  • The policy number;
  • The period of validity;
  • The activities actually covered;
  • The exclusions;
  • And above all, what the insurance actually covers.

A company can be properly insured for public liability while offering no financial guarantee against its own bankruptcy.

The real problem: insurance often comes into play after you've signed

Traditionally, an insurer covers a specific risk.

But in the building trade, the best way to mitigate a loss is still to avoid signing a bad quote with a high-risk company in the first place.

The company

Its actual existence, its status, how long it has been established, its insurance policies, its activities and various legally available risk indicators.

The quote

Are the prices consistent? Do the quantities seem normal? Do the materials justify the price? Are any key items of work missing? Are the down payments disproportionate?

The project

What is its value? What is its complexity? Are there any particular technical risks? Is the proposed schedule realistic?

Why could a positive quote analysis become the basis for an insurance policy?

This is precisely an avenue currently being explored by ECV – Euro Construct Verify.

ECV is currently in negotiations with insurance companies to explore the creation of a product designed to better protect consumers against certain risks associated with their building projects.

The principle being considered is particularly interesting: access to this protection could be conditional on a prior positive analysis of the quote and the file by ECV, according to eligibility criteria that would be defined with the insurer.

ANALYSE → ASSESS RISK → INSURE

rather than:

SIGN → PAY → DISCOVER THE PROBLEM → TRY TO RECOVER YOUR MONEY.

The exact guarantees, exclusions, limits, territories covered, acceptance conditions and premiums will obviously depend on the agreements that can be reached with the insurers.

At this stage, this product is therefore under review and negotiation and should not be presented as a cover already available from ECV.

Good insurance is no substitute for a good contract

Avoid disproportionate down payments.

Opt for payments that correspond to the actual progress of the work.

Ask for invoices.

Do not pay the full amount before handover.

Ensure that the materials, brands, references, quantities and technical specifications are precisely listed in the quote.

Ask for certificates of insurance when the nature of the work justifies it.

And above all: do not sign a quote just because the price looks attractive.

A quote that is 20% cheaper can end up costing 50% more if the project has to be finished or redone.

"My contractor is asking for a 50% down payment. Is that normal?"

There is no single answer for all countries and all trades.

A manufacturer of custom-made window frames may legitimately need to order specially fabricated components. A general contractor may need to order certain materials.

But the higher the down payment, the more you are directly financing the company before you have received the corresponding work.

So ask why this money is needed. And most importantly, ask: "What guarantees my down payment if you go bankrupt next week?"

The answer can be extremely instructive.

The price isn't the only risk in a quote

When a consumer analyses a quote, they usually look at the bottom line. ECV recommends going much further.

A construction quote should also be examined from these angles: FINANCIAL + TECHNICAL + LEGAL + CONTRACTOR + INSURANCE + DOWN PAYMENTS + GUARANTEES.

Because a €38,000 quote from a reliable company can be much less risky than a €31,000 quote from a shaky company demanding a 50% down payment immediately.

Before you sign: questions to ask

  1. What insurance policy exactly covers your liability on this project?
  2. Can I receive the certificate before I sign?
  3. Is there a guarantee in case of bankruptcy?
  4. Is my down payment guaranteed?
  5. What happens if you abandon the site?
  6. Who finances the difference if another company has to finish the work?
  7. Are the materials and references specified precisely in the quote?
  8. Do the payments correspond to actual stages of the project?
  9. Is there retention money held until handover?
  10. What are the exclusions in your general terms and conditions?

A reputable contractor should not consider these questions to be unusual.

You are not asking them to trust you; they are the one asking you to entrust them with tens of thousands of euros.

ECV: check before you sign, and perhaps better insurance tomorrow

The European renovation market is worth a considerable amount of money.

Yet, consumers are still too often left on their own when they have to determine if a quote is coherent, if the company seems reliable and if the proposed guarantees are sufficient.

ECV's objective is to shift consumer protection to the stage before the quote is signed.

And in the future, if the current negotiations with the insurance sector are successful, a positive ECV analysis could also form the basis for eligibility for an insurance protection specially designed around the risks of the building project.

It would be a logical evolution: checking the risk before deciding to insure it.

In summary

Yes, there are various insurance policies and guarantees in Europe that can protect a consumer.

No, there is no universal insurance policy that automatically covers all the nasty surprises of a building project.

And most importantly: ten-year liability, public liability, structural damage insurance, bank guarantees and completion guarantees are not the same thing.

Before you sign, you need to know precisely what is covered... and what will be left for you to cover.

Already received your quote?

Don't sign blind. Have it analysed by ECV before you pay any deposit.

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