NOTICE FROM PAGDI LANDLORD FOR STRUCTURAL CHANGE & ALTERATION

My landlord has given me a written notice. Sir, I, the above-mentioned named the land road of the premises situated at XXXXXXX, Borivali (W) Mumbai - 400092. I Hereby Would like to bring to your notice that it has come to our Knowledge that you have made alteration structural changes and have covered the area in the premises as per your needs and requirement without my consent and premises and also put out hoarding which also affects the structure of my building. I would like to point out that the above changes are not as per the BMC rules and regulations and are bad in laws. I hereby request you to re instate the premises and as per the rules and regulations of the concerned authority to avoid any inconvenience to me the near future, failing which I would be forced to intimate the concerned authority, for which you shall be solely held responsible. What can be done in this case do we have any option to deal with this? Can we provide architect plan and structural auditor report.