Basically what Luke said If you're land claimed is more than the amount of power you have, then they can claim your land and take stuff. Type /f show to see the amount of land you have and amount of power you have If all you want to do is build, you can buy a perk from l4g which turns your faction into a peaceful faction, which turns off PVP for everyone in your faction (you cant attack / be attacked) but obviously this doesnt stop people from claiming your land if you keep dying or something like that. Just a suggestion if that is what you're wanting to do,