> why is it any of your darned business if I want to build a deck? Hypothetically? Because I live downhill from you, you didn't do any mandated hydrology / run

> why is it any of your darned business if I want to build a deck? Hypothetically? Because I live downhill from you, you didn't do any mandated hydrology / runoff study for new construction, and when you moved earth to make room for your deck you turned my nice backyard into a swamp by changing the drainage layout. This is one of the reasons some new construction requires permitting, for example.