Hello! I am a personal trainer in my secondary occupation and would like to carry out my activity on my private property (at home). We could ‘build’ an extension (max. 40 m²) in our garden, exclusively for professional use. Now I was wondering whether I can claim the full cost of this as expenses?
I would also take out a loan for part of here. I can’t find a clear answer to this question anywhere…
Thank you in advance for your help!