Property owner and building preliminary inquiry

Hello,
I have two questions regarding the informal or formal building preliminary inquiry.
Does the architect need to have a planning permission entitlement for this?
Is a written approval from the property owner required for the building authority?

Hello, I have two questions regarding informal or formal preliminary building inquiries. Does the architect have to have building submission authorization for this? Is a written approval from the property owner required for the building authority?

It depends on which questions are asked. You can also submit an inquiry as a private person regarding property. The difference between informal and formal in Saxony is unknown to me. I only know of a preliminary building inquiry there. And no, written approval is not required. Not even for the building application, but it can be required by the authority.

Thank you very much for the quick response

If I understand correctly, anyone can submit a preliminary building inquiry for any property?

It's clear, he needs a site plan and pays the fees at the office.

And how do I find out if a preliminary building inquiry has already been made for my property?

And how do I find out if a preliminary building inquiry has already been made for my property?

Not at all. You won't get an answer to that.