For everybody’s information, here are two replies from Mark: (auto-translated):
(ref email: 07/02/2025 “Vragen over de statuten van De Spiegel”)
About the “document de réservation”:
The reservation document is similar to a sales document, but of course you are not selling anything.
The document describes very precisely the share that the future owner will have in the project (private and common), what the price will be, the progress of the project, the risks, premiums, etc. …
This document is usually drawn up by the notary. The candidate owner can use it to go to the bank to discuss his credit and sometimes to obtain it.
I do not know whether your notary accepts this working method.
An example is attached.
About subsidies:
A construction project is often a mix of renovation and new construction. This means that the VAT assessment is different. There are also premiums that only apply to a renovation and not to new construction and vice versa. The intention is that all premiums and allowances are shared by everyone according to the share that each person has in the project. Also certain individual premiums.
An exception is made for premiums that only relate to an individual additional investment. For example, if no heat pumps are provided in the project, someone can still decide to do so. If this individual investment results in an allowance, this is not shared.