Register the private new construction of a single-family house at BG Bau

Hello, the construction work for our new house will begin in two months. We will outsource almost everything except for the painting work and laying the floor in some individual rooms. We are currently dealing with the necessary insurance and also with the registration at the professional association. I have a few questions about this. Is it mandatory to submit the application before the start of construction? I read on the website that I must specify what I am doing myself and where I have private helpers. It is just difficult to say in advance how many hours I will need for this. But I also read that I must list all the commercial companies carrying out the various trades, is that correct? Maybe someone can help me with the process with [BG Bau].

Procedure: Don’t do anything at all at first. If they want something, they should get in touch. That is the normal case.

Just ignore BG Bau and stall. They will eventually leave you alone.

I see it differently than the previous speakers....

If you forgive most things, you can calmly provide the companies in the questionnaire. If you don't have any yet, just leave it blank.

You don't have to estimate your hours, but state them afterwards; quarterly you will have to provide a number of hours. If that is plausible, they will leave you alone. If the hours are not plausible, they will ask or set the hours higher themselves.

If you forgive most of it, you can calmly provide the companies in the questionnaire.

You can do that if necessary when the BG gets in touch. But you don't have to do anything proactively.