3) If I want to renovate my house, do you only take care of the plans or do you also take care of the purchase of materials and labour?

I take care of all the graphic documentation (plans, 3D images, etc). I give you all the necessary information so that the construction company you choose can carry out the project. I advise you on what materials to buy, quantities, etc. I also communicate with the person in charge of the project in case there are any unforeseen events or something is not entirely clear.