Unauthorized Construction — Unauthorized construastion and without noc

This is to bring to your notice that i am a resident of guru nanak nager and wish to inform you that there is serious unauthorized construction going on the wz-36 gali no-7 guru nanak nagar near sharma sweets, delhi -110018, the owner of 3th floor has been unauthorized construction a fourth and fiveth floor without parmishion taken by mcd and that house base ground floor and first floor floor construction about 25 years old and there is no pillar in that building which could bad to serious ciroum stand in future and that owner do not have noc to do construction .
Wehad requested the local administion bady to come into action to stop the unauthorized constrution but all such request has been fail on deaf ears