问一个关于DA有效期的问题

huang003261

最近想要给房子做一点小改建
发现原房东已经把这个modification在10年前申请过了，s.96也已经批准了.
问了council 因为原有的 DA 也就是主建筑已经在17年前开工并完成，所以这个DA 是不会过期的，所以同理这个DA modifcation也不会过期

An application for the modification of a development consent can only be made if a valid development consent has been issued by Council. A development consent is only valid for 5 years. A development consent remains valid once the approved development has commenced in accordance with the conditions of a development consent.

不知道有没有朋友碰到过类似的情况，这种情况应该是可以直接申请cc了吧？