Architectural profession in the Netherlands
Have a look in the BNA publication on the profession dating from 2006.
How to register as an architect?
You can register as an architect in Holland via Architectenregister (if your education is appropriate and accepted).
The Royal Insitute of British Architects provides an overview of all European countries:
Legal position of architects in The Netherlands (and Belgium)
Legal specialist Sarah Schoenmakers did a detailed study into the legal position of the Dutch architects.