Municipal Corporation Of Delhi — converting open terrace into rooms for their use

Address: New Delhi, Delhi, 110063

Owner of bg-5/74d, paschim vihar, delhi 63 keeps the open terrace locked from past 2 years where water tanks for ground, first, second floor are present. They have not shared keys with other flat owners living on ground, first and second floor. Now they are converting open terrace into rooms for their use without discussing with other owners. This has to be stopped.