Hello,
what is not stated in the contract must be provided by you. If no surveyor is mentioned there, it is your responsibility to have this carried out before the building application is submitted.
Did you just blindly forward the building applications to the district office or did you look at and check them beforehand? As the builder, you probably have any existing slopes, embankments, trees, or other features best in mind. Even laypeople must notice that no terrain profile is visible. Hopefully, you will not face any unpleasant surprises during the earthworks because the entire property needs to be filled or something similar. I’m keeping my fingers crossed for you!
Thus, the construction company can turn this against you, as their approved plans at this stage, with missing elevation data, were approved by you or accepted with all now arising supplements, schedule delays, and changes by sending/giving them to the district office!
Maybe I am just a bit more precise and picky in my profession as a designer/draftsman. :confused: