ltsc1980'X' logo installed atop Twitter building, spurring San Francisco to investigate permit violation
IverCoderWouldn’t this building be Elon’s property, what stops them from changong their own markings as they please? (I’m not familiar with American property stuff.)
In general you are not allowed to make changes to your property in ways that may endanger yourself others. For bigger changes, bigger properties, and properties that are more urban you often need permission from the city on more things. But even when building things for a home out in the suburbs you will often need the correct permits.
This is not exclusive to American law.