The civic body will also be conducting a survey of all "dangerous" buildings in the area by end of this month to avoid such mishappenings.
Roof of a vacant shop on top of Jain Book Depot in CP's C-Block had collapsed last week raising questions about the structural stability of other buildings in the iconic market.
"It is important to have a policy to regulate rooftop installations as the structures cannot take any additional weight. The occupants will be asked to inform us about all mobile towers and water tanks installed on the rooftops and a survey will be conducted of all the dangerous buildings in the heritage market," said a senior NDMC official.
"A preliminary enquiry has pointed out that the roof collapsed because of additional load being put on the roof as one of the factors contributing to the collapse. The panel has been asked to submit its report within three weeks," the official said.
"We will be asking occupants of Connaught Place to give an undertaking that roofs of their buildings were not being misused because as per the provisions of the health trade licence, no commercial activity is allowed on the terraces, which are supposed to be for fire-fighting and exit purposes," the official added.
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