system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't I do what I want to my own property (shed, pool, etc) without the townships permission and permits?
gpt
In general, just because it's on your property doesn't mean it won't affect other people. As a trivial example, you can't start a toxic waste factory in your backyard because it will not be pleasant for your neighbors.

When you moved to the city/town/county you live in, you agreed to follow their rules. The town as a whole thought it was better to put limits on construction (just like zoning laws) for the good of the community, even if it's a pain for you.

For example, if your shed is an eyesore, it can lower everyone nearby's property values, which will suck when they try to sell their house. If your pool is super nice, it can raise property values, which can suck when it's property tax time. Not to mention owning a pool is more dangerous than owning a gun.