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The fees of an architect vary from 8 to 15% excluding taxes of the cost of the works. But as they are not regulated, you can always discuss freely with your architect the amount and mode of his remuneration. Let's examine together what reality covers this difference in percentage.

Why does an architect's fees vary?

Without knowing in detail your project of construction or renovation, it is difficult to estimate the fees of an architect. In fact, except for small jobs that are remunerated on a fixed price basis, this amount depends on three factors:

  • Thee total cost of the works: The higher the cost of the work, the more the fees will be. However, the percentage will be lower. For example, for work estimated at less than 100 000 € the percentage can be 15% but it can go down to 7 or 8% for a project of more than 250 000 €. This percentage is to negotiate with your architect.
  • The complexity of the project: The more complex the project (sloping terrain, nature of the soil making construction difficult, complicated building architecture, etc.) the higher the fees will be.
  • The scope of the missionThis can range from a simple advisory opinion to a complete project management mission. In this case, the architect follows the project from the beginning of the project to the reception of the works. You can also ask him to assist you with the development of the building permit. It's up to you to decide how much of your architect's mission will be.

To these elements, you will have to add the notoriety of the architect... And VAT! It amounts to 20% of the fees for a new project. It is at a reduced rate for some renovations.
You have every interest in playing the competition and ask for several quotes. Especially since building his house is a project of personal life. It is important that you get along with your architect and that he is listening to you.

The margin of tolerance and the increase in fees

As long as you do not have the specifications of all the trades that must intervene on the site, you can not know the exact cost of construction and therefore the amount of fees of your architect. This is why the architect's contract provides for a margin of tolerance. But beware this one can not be more than 10%.

After the signing of the contract, fees can only increase in 3 cases:

  • Within the margin of tolerance and if the contract explicitly provides for an index of increase.
  • If you ask or if the situation requires modifications of the project during the works and that these require changes or new plans.
  • If you give the architect one or more missions.

The different methods of remuneration of an architect

There are different methods for calculating the amount of an architect's fees. The choice of one or the other depends on your project and they can be combined with each other.

  • The packageIt is mandatory for work sites under 170 m².
    For simple projects concerning small areas, the fixed price can be established per m². For example X € m² for the design of plans, for a mission of prime contractor, etc.
    The package is also used for the most common missions such as the application for a building permit, the call for tenders to choose the various professionals who will work on the site, etc. It is then X € per mission.
  • The percentage: This is the mode of remuneration practiced for the yards of more than 170 m ².
    The percentage applies to the total amount of the work excluding taxes and fees.
  • The hourly shift: It only applies during the realization of short and well-defined missions or when the architect intervenes for an expert mission.

How to pay his architect?

It is the architect's contract that determines how the fees are calculated and how they are paid. As a general rule, they are settled as and when the progress of works and thus as the execution of its mission by the architect.

Good to know: The Order of Architects has developed an online tool that "gives you an estimate of the number of hours of service required by your project"
See the website ordredesarchitectes.be/ tool for calculating benefits.


Video Instruction: Architects' Fee Structure