It is always better if the planned activities on your building include as few participants as possible. Thus the responsibility is not divided into small minor parts, but is taken by one main participant. For example, if you are planning to build a family home, it is best if its designer is responsible for both budgeting and supervision. He / she not only knows his project best, but there will be no other culprits if a mistake is made. So you will certainly get a higher quality product at a better price.
The cost of the comprehensive service depends on a number of factors, and the unit rate is typically quoted in €/m². Please contact me to receive a personalized quote for a comprehensive service for your building.