Article 7:754 Dutch Civil Code, Book 7

Paragraph 1

When entering into or performing the contract, the contractor is obliged to warn the client of inaccuracies in the order in so far as it knew or ought reasonably to have known of them. The same applies in the case of defects and unsuitability of things originating from the client, including the land on which the client has a work carried out, as well as errors or defects in plans, drawings, calculations, specifications or implementation instructions provided by the client.

Paragraph 2

In the case of a contract for construction work, a warning as referred to in paragraph 1 is given in writing and unambiguously, and the contractor draws the client's attention in good time to the possible consequences for the proper performance of the contract. No derogation may be made from this paragraph to the detriment of the client, in so far as the client is a natural person who is not acting in the course of a profession or business.