So for the land registry stuff, like the bank and registrations, we paid about 2000. Then your list is missing the soil survey... costs between 800 and 2000€. Then the connection prices are probably not entirely correct, or the earthworks part is missing here. But varies a lot regionally. What is definitely missing is the disposal of the excavation and the costs for the gravel... Actually, the earthworks are hardly calculable... for us, 5000€ was planned at the beginning, now it's easily 12,000 without a basement. And your carport... you won’t get it that cheap... at least not a decent one, only those standard hardware store ones, and even then you still had to lay paving underneath and pour foundations.