Cluster info · Breyne Law

Breyne Law completion guarantee: your bankruptcy protection

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By Edouard Hennin, Provisional reception expert
Published on 27 May 2026 Updated on 27 May 2026 6 min read

The completion guarantee is the major protection against a developer’s bankruptcy during the site. Often confused with the security deposit, it acts at a very different moment.

1. What it is for

If your developer goes bankrupt before delivery (unfinished site, incomplete shell, impossible finishing), the completion guarantee allows finishing the site without spending a euro more.

A bank or insurance company contractually undertakes to finance the finishing of the works by a new contractor — or to compensate the buyer.

2. The mechanism

Article 12 imposes the financial guarantee on the developer. Most common form: bank guarantee issued by a Belgian bank.

The certificate must:

  • Name the guarantor (bank or insurance company).
  • Specify the guaranteed amount (generally the balance still due).
  • Mention the activation conditions.
  • Be delivered before the authentic deed.

Without certificate: the contract is void, as for the security deposit.

3. Security deposit vs completion guarantee

Security depositCompletion guarantee
WhenAfter reception (1 year)During site
WhatLift reservationsFinish the site
Amount5% excl. VATBalance due

4. Activate in case of bankruptcy

Bankruptcy published in the Belgian Official Gazette → declaration to the guarantor within 1 to 3 months → activation and organisation of the takeover site.

Our Breyne Law advisory pilots the whole process — avoid costly procedural errors.

Completion guarantee questions

Difference security deposit vs completion guarantee?
The security deposit (5%) covers reservation lifting AFTER reception. The completion guarantee covers site finishing BEFORE reception, in case of bankruptcy.
How to activate it?
Bankruptcy publication in the Official Gazette, then declaration to the guarantor (bank or insurer named on the certificate). Short deadline: 1 to 3 months.

Developer bankruptcy: act fast

Our team pilots the activation of your completion guarantee.