What applies when you commission a service from Natura Mater.
These terms and conditions govern Natura Mater's advisory, analysis, study and training services. They replace the previous general terms and conditions. This English version is provided for convenience; the French version is the only binding text.
Version of 16 September 2026.
These general terms and conditions apply to all agreements for services entered into by Natura Mater SRL, whose registered office is at Avenue Louise 523, 1050 Brussels, registered with the Crossroads Bank for Enterprises under number 0747.685.995.
Natura Mater does not sell materials. Its activity consists of documenting, analysing and specifying construction options, and of training the professionals who put them into practice.
Unless expressly provided otherwise in a specific agreement, any order entails acceptance of these terms and conditions, to the exclusion of the client's own terms and conditions. In the event of conflict, the specific agreement prevails.
Each assignment is the subject of a written offer which describes its scope and price and states its period of validity. The order is concluded by written acceptance of the offer; where the offer provides for an advance payment, the assignment begins on receipt of that payment. The information in Natura Mater's communication materials and on its website is provided for guidance only and is not contractually binding.
Services are invoiced either at an announced fixed price, or at the lump sum set out in the offer, or on a time basis at the rate stated in the offer. Time spent on assignments is recorded rigorously and precisely, with a description of the work performed and the date on which it was carried out. Prices are exclusive of VAT.
The price of a renewable annual commitment is indexed at each renewal in line with the consumer price index, with a minimum of two per cent per year. The indexed amount is due after written notice.
Invoices and fee notes are payable immediately, unless a payment term is stated on the invoice. Fixed-price services payable online are paid at the time of ordering, and the arrangements specific to registration for an open session, namely transfer, cancellation or postponement, are set out in the registration confirmation.
Where the client acts in the course of its professional activity, any amount unpaid on the due date shall automatically, and without formal notice, give rise to fixed compensation of ten per cent of the sums due, with a minimum of one hundred euros, together with interest of one per cent per month. These amounts apply without prejudice to the Act of 2 August 2002 on late payment in commercial transactions.
A dispute does not release the client from paying, on the due date, the part of the invoice that is not disputed.
Natura Mater makes every effort to carry out the assignments entrusted to it with diligence and professionalism. The client will favour contact by email and, for any urgent request, will take care to state that it is urgent.
A reasonable period must be allowed for the assignment to be carried out. This is assessed according to the context of the assignment and its degree of complexity. Deadlines agreed between the parties are indicative. If it is impossible to respond to a request, or to do so in good time, Natura Mater informs the client promptly. Natura Mater is always free to decline an assignment; in that case, it informs the client without delay.
The client undertakes to provide all the information necessary for the proper performance of the assignment and to inform Natura Mater of any new development or change in circumstances.
Unless expressly agreed otherwise, services may be performed by any adviser on the Natura Mater team, without distinction. With the client's consent, which may be refused only on legitimate grounds, Natura Mater may have certain parts of the assignment carried out by subcontractors.
The support provided by Natura Mater and its expertise in sustainable materials may under no circumstances be confused with a design assignment falling to an architect. Site supervision, inspection of the proper execution of the works and acceptance of the works are also excluded from its scope. In the assignments entrusted to it, Natura Mater is bound only by an obligation of means.
A client acting for purposes outside their professional activity has fourteen days to withdraw from a distance contract, without giving any reason and at no cost. The period runs from the conclusion of the contract. Withdrawal is exercised by a written statement sent to hello@naturamater.eu, and the refund is made within fourteen days of its receipt.
If the client expressly requests that the service begin before the end of this period, they remain liable for the amount corresponding to what has already been performed. A service fully performed during the period with their prior consent ends the right of withdrawal.
Each party treats as confidential the information received from the other, whether or not it is designated as such, and limits its use to the performance of the contract. Confidential information includes, in particular, the fee structure and information about clients, suppliers and business relationships.
Project documents provided by the client (bill of quantities, specification or drawing) are not passed on to any third party under any circumstances. Natura Mater communicates only about its own analyses and observations, never about the documents its clients entrust to it.
Deliverables produced specifically for the client belong to the client and may be used by it in pursuit of its own corporate purpose. They may not be distributed to third parties without Natura Mater's written consent.
Natura Mater retains ownership of its methods, its tools, its documentary database and its training content. Access to a training course confers no right to reproduce or redistribute the materials provided.
Unless agreed otherwise, Natura Mater is authorised to mention the name of the client and of the projects it has supported as a reference, for external communication purposes, in particular on its website and social media.
The processing of personal data under these terms and conditions is described in the privacy policy, which forms an integral part of them.
Agreements entered into with Natura Mater SRL are concluded intuitu personae or, where applicable, intuitu firmae. Any transfer of these agreements, in whole or in part, whether free of charge or for consideration, is void.
Natura Mater may amend these terms and conditions. The applicable version is the one in force on the date of the order, and the most recent version can be consulted at any time on naturamater.eu.
Any agreement entered into with Natura Mater SRL is governed by Belgian law. Any dispute that cannot be settled amicably shall be submitted to the French-speaking courts of the judicial district of Brussels.