You can’t. It’s either/or, there’s no fine tuning. So if Funcom starts adding a ton of no-build zones in places that are contested on officials, private servers either have to keep that, or turn off building restrictions entirely which means allowing people to build in the middle of Sepermeru or New Asagarth.
Building in The Crevice in the tundra, or in the Gutter or the Tradeway, is not the same as building/wiping out NPCs in a major location.