Actually, that is law in Germany. For every amount of building space (residential, business, ...) you are required to provide a number of parking space (dependi

Actually, that is law in Germany. For every amount of building space (residential, business, ...) you are required to provide a number of parking space (depending on the type of building). If you can not provide the required amount of parking space, then you have to pay a fee to the city. All the numbers like required parking space and amount for the fee is decided by the city. So in high density cities the fee is more expansive than in the country side.