'De Nieuwe Regeling 2011' (DNR 2011) applies to all of our activities. This regulation defines the legal relationship between client-architect, engineer and consultant. The regulation has been formulated by the BNA and the ONRI. It functions as a standard regulation, to be used when drawing agreements between advisers and clients.
You can download a specimen in Dutch:
toelichting op 'De Nieuwe Regeling 2011'
DNR 2011 EN
explanatory notes on 'The New Rules 2011'