What it is
The CCTB was established on the initiative of the Walloon Government and the Permanent Consultation Committee for Construction, with an explicit aim: to provide a common language for all industry participants, for every type of works contract and every type of programme. Its governance thus brings together the public authorities and the industry.
Three characteristics distinguish it.
It addresses public and private contracts alike. It is not a document reserved to contracting authorities, even if that is where it is most used.
It covers construction and refurbishment, with clauses added across versions on reuse, soil and waste management, circular economy and electric mobility.
It comes with a catalogue of reference documents, listing the standards and regulatory texts cited, covered in the dedicated article on the catalogue of reference documents.
Its exact scope
This is the point most often approximated, and the commonest error deserves naming. The framework is not mandatory everywhere nor for everyone.
The CCTB carries authority as a general reference document for public contracts and subsidised works of the public services of Wallonia and of the French Community.
Two clarifications are needed.
The French Community is not the Brussels-Capital Region. It is a community, distinct from the region, and it holds buildings in both regions. A decision of its Government in May 2014 approved the principle of a single reference specification for works carried out by or on its behalf, and for works it subsidises to at least fifty per cent.
In the Brussels-Capital Region the CCTB has no regulatory status. It is used there as a de facto reference and cited by regional documentation, but nothing imposes it. Writing that the CCTB applies in Brussels is inaccurate.
Who can impose its use
Beyond the texts making it mandatory within their scope, the CCTB can be imposed contractually. Its use then becomes mandatory by the will of the parties.
Nothing prevents wider use than the official decisions provide for. Use of the CCTB may be imposed on their own initiative by a client, by a designer or by a subsidising authority.
One example documents that extension: a notification from the Walloon Housing Company in December 2019 imposed its use on public service housing companies from 1 January 2020, for the technical part. The framework's real reach thus exceeds its regulatory scope.
For a quantity surveyor or architect the practical question is therefore not "is the CCTB mandatory" but "does this contract impose it". The answer sits in the contract documents, not in a general text.
| Aspect of the CCTB | Content |
|---|---|
| Nature | Citation document, referenced by index rather than reproduced |
| Mandatory scope | Public contracts and subsidised works of Wallonia and the Federation |
| Possible extension | Contractual imposition by a client |
| Structure | Ten technical parts and an administrative volume |
| Update | Annual, published between February and March |
| Applicable version | The one cited in the particular specification |
How it works with the particular specification
Being a citation document, the CCTB does not replace the project document. The particular specification cites the indexes and adds what is specific to it.
A contract's particular specification prescribes the clarifications, additions and derogations to the CCTB applicable to that contract. The framework carries the general technical content, the particular specification carries what is specific to the project.
That relationship and its rules are covered in the article on clarifications, additions and derogations. The three mechanisms are distinguished there.
A framework updated every year
This is the characteristic with the heaviest consequences for a practitioner, and within the Belgian landscape it is specific to the CCTB. It stems from the annual updating cycle.
The CCTB is updated annually. Each version brings normative updates, improved descriptions and new prescriptions, and the catalogue of reference documents is completed accordingly.
Two practical consequences.
Publication of a new version renders the use of an earlier version obsolete for drafting a new specification. A project begun under one version and drafted after publication of the next raises a transition question, which the official documentation addresses in its frequently asked questions.
Every reference to a version must be dated. Citing "the CCTB" without a version in a contract document is an imprecision that can prove costly in a dispute.
This point is developed in the article on the annual update of the framework. Version management is explained there.
What this means for a professional
Four rules.
Check what the contract documents impose, rather than reasoning from a general status.
Do not extend the scope of the CCTB to the Brussels-Capital Region in a contract document.
Always cite the version, with its date, in a particular specification as in a bill of quantities.
Check the version in force at the time of drafting, not at the time the project began.
This article reflects the position of the framework at the date of checking and serves professional orientation. It does not constitute legal advice and does not replace consulting the official source.