Why subscribe to Reef and Bati CCTP?

2 Solutions designed by CSTB Editions to help you in your daily work!

Take advantage of special offers from June 1st to 30th, 2026 on the CSTB online store

Subscribe to Reef to consult the technical and regulatory reference guide for construction

Access in just a few clicks:

to the essential legislative and regulatory texts
to all current DTUs in full text
to nearly 2.000 full-text standards
to all CPT - Technical Specifications Notebooks
to professional rules, calculation rules, etc.

Intended for all construction stakeholders, this monitoring service brings together in an organized way for you, all the resources necessary for the design, implementation and operation of your new or renovated buildings.

This online service will adapt to your needs, from the "DTU Collection" version to the "Premium" version, you will get an almost immediate answer to all your questions. It also gives you access, depending on the level chosen, to more than 115 CSTB Guides in digital format, and even to the Archives of the repository since January 2003!

In addition to Reef, subscribe to Bati CCTP to edit your CCTP and DPGF documents.

Bati CCTP allows you to generate comprehensive, high-quality CCTPs from a library of pre-established clauses for both new and renovation projects. This service also allows you to draft and edit the CCAP and the Commitment Act for the same construction project, for both public and private works contracts.

With Bati CCTP + Cost Estimation, you can also obtain estimates for your construction projects. A simple and intuitive interface gives you access to a price library of over 35.000 items.

Bati CCTP is constantly evolving; 45 lots and over 12.000 pre-established clauses and descriptions are already available. With your subscription, you benefit from free updates to content and features.

Opt for a Reef + Bati CCTP Pack!

Within the same work environment, you can consult all the technical and regulatory texts for the building sector via your Reef account, then switch to Bati CCTP to create your project specifications. Conversely, while creating your specifications, you can simultaneously consult the technical and regulatory texts cited in the clauses and descriptions of your project within your Reef account. This ensures you comply with current regulations.

Take advantage of special offers from June 1st to 30th, 2026 on the CSTB online store