Small courtyard maintenance property management?

I don't know how to make a suggestion: if I buy this garden property when I buy a house, I can't do it because it is for my own use now. He should get the owner's permission to dig, and he is changing the original design of the pipeline.

Moreover, the sedimentation tank is built on a large scale, and it is not allowed to break ground casually. If there are design standards and construction standards for municipal pipelines, you have to apply to them for a report to prove that the construction can be carried out without damaging the building foundation and affecting the living environment.

If you don't do this, don't let the construction go on, or you will have to sue them.