Building permit problems due to the nature conservation authority

Hello dear forum,
we are hoping for your collective knowledge here.
We have the following problem:
We submitted a building application for a single-family house in Brandenburg, after having a positive preliminary building permit.
Now the nature conservation authority has intervened and requested an expert report on the biotope and species protection. This has now been done, whereby it was observed that 2 trees in the building area form a "special habitat" and are worth protecting. However, both trees must be felled for the house construction. Now the question arises who has the final say?
To my knowledge, the building authority decides on the felling permit within the framework of the building application. But how much influence does the lower nature conservation authority have? Can the building authority still approve the felling even if the report states that the felling should not take place due to the special habitat?
Have you ever had such a case?
We would be glad to hear about your experiences and how they ended. We hope that our house construction cannot suddenly be stopped because of something like this.
Thanks in advance for the help

Now the question arises who has the last word?

Usually the public interest, not the personal one.

Hopefully our house construction will not suddenly be impossible because of something like this.

It is annoying, but fortunately there are houses that can be planned next to trees. And that you can plan _around_ trees is shown by with his house next to the oak tree that stands in the middle of the property.

We also had to commission a nature conservation survey before the construction. The surveyor discovered nests in a few trees that were planned to be cut down because the house was to be built there, but the nests were not inhabited. The forestry authority approved the felling. We only had to install a few birdhouses and one bat house in the remaining trees. We also had to carry out the felling within the permitted time (I believe it was February - October). Normally, you get a special permit for house construction, but this was not possible.

By the way, we are building in Brandenburg, near Potsdam.

Building by the way also in Brandenburg, near Potsdam.

Maybe you are neighbors? And the tree problem can be solved so easily?!

We also had to fell within the permitted time (I believe it was October - February).

Attention important, exactly reversed: October - February. Otherwise, there will be trouble.

We also had to commission a nature conservation report before construction. The examiner found nests in a few trees that were planned to be felled because that’s where the house was supposed to be, but they were not inhabited. The forestry authority approved the felling. We just had to put up a few birdhouses and a bat house in the remaining trees. We also had to fell within the permitted time (I believe it was February - October). Normally you get a special permit when building a house, but this was not possible. By the way, we are building in Brandenburg too, near Potsdam.

That reassures us a bit that we might be lucky and the decision will be the same for us. Would like to pm you but don't have enough posts yet.