Why do backyard tool houses need property management permits?

To be a yard, you must go to the property for the record.

Because the bottom owners of some buildings can't build private courtyards, and those normal courtyards are the space that developers promise to give to owners for private use when they sell. Although the owners of this area have no property rights, they have the right to use them. If it is not such a small courtyard, it is illegal for the owner to occupy the public space of the community privately, so the property management company will take care of it.