A builder would need an NOC from the AAI to go ahead with the construction of high-rise buildings. The AAI has a zone map denoting areas where high rise buildings should not be constructed
credits: https://realty.economictimes.indiatimes.com/tag/chennai
According to the new advisory that will be effective from August 16, a photograph of the land with geo-coordinates should be attached with relevant documents.
Even if a building has been constructed, they register it as a vacant plot. This is causing revenue loss for the government, said an official. To avoid this, a photograph of the vacant plot to be registered should be taken along with geo-coordinates. This should be part of the documents being submitted for registration.
credits: https://realty.economictimes.indiatimes.com/tag/chennai