function factionsmod.can_build(pos, player)
    if pos.y < factionsmod.lower_claimable_height or
       pos.y > factionsmod.higher_claimable_height then
        return true
    else
        local fac = factionsmod.get_chunk_owner(pos)
        if not fac then
            return true
        else
            return fac:has_permission(player, "build")
        end
    end
end