in one case three years back structural audit done by society and society arpproved for redevlop the building but what if they have not done can i make complaint, and whome is should make

Yes. If a society got a structural audit done and even approved redevelopment, but then took no action for years despite a serious condition, you can raise a complaint—especially if there are safety concerns. Whom to complain to: 1. Society managing committee/secretary — ask in writing for the audit report, resolution, and action taken. 2. Registrar/Deputy Registrar of Cooperative Societies — for inaction, mismanagement, or failure to share records. 3. Local municipal authority/building department — if the building is unsafe or needs urgent structural action. 4. If there is immediate danger, also inform the ward office/disaster cell/fire department. Keep copies of the audit report, AGM/SGM resolutions, photos, and your letters. Send complaints in writing and take acknowledgment. Professional review recommended.