"No," Chief Secretary Sanjay Mitra said today when asked whether it would lead to change in the facade or destroy or radically alter the look of the complex.
He also replied in the negative when asked whether any foreign agency would be entrusted with the job.
"However, changes that may have eroded the heritage character may have to be reversed. This will depend on the recommendation of the experts," he told reporters here.
"All statutory bodies relevant to the heritage issue will be consulted and their inputs taken," he said, adding that every effort would be made to make Writers' Buildings as environmental friendly and green as possible.
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The building acquired complete shape by the end of 19th century with the present Greco-Roman look.
"However, from the second half of the 20th century in particular, due to reasons of lack of space in an age of expansion of government, there have been many unplanned (and architecturally asymmetrical) additions and alterations.
"The complex is most vulnerable to fire hazards today, and there have already been a few fire incidents in recent years," the chief secretary said.