If the fence is directly on the boundary, then it’s a shared fence. You set it in a foot to establish in good faith that it’s strictly yours. Shared fences have a bunch of legal issues just because sharing property with other people often sucks. If you’ve lived in a development with shared fences you should look at your HOA’s CC&Rs. There’s always a lengthy chapter on how the walls should be handled. Just to cut out the legal nonsense that always comes with shared fences/walls.
If the fence is directly on the boundary, then it’s a shared fence. You set it in a foot to establish in good faith that it’s strictly yours. Shared fences have a bunch of legal issues just because sharing property with other people often sucks. If you’ve lived in a development with shared fences you should look at your HOA’s CC&Rs. There’s always a lengthy chapter on how the walls should be handled. Just to cut out the legal nonsense that always comes with shared fences/walls.