She has, in fact, proposed two options for the alternative site -- one within the Parliament complex itself and another across the Rajpath, a place where some defence and Delhi Police security barracks are situated.
Mahajan has written a letter to Urban Development Minister M Venkaiah Naidu asking him to consider initiating action for construction of a new Parliament building.
"On account of ageing of the Parliament House building and expansion in activities, staff etc, the building has shown signs of distress and over utilization," she has said in her letter to Naidu, while noting that the present structure is already 88 years old.
The Speaker has said that initially the building was intended only for the Members of Parliament and the Secretariat staff.
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Grade-I' structure, there are several limitations on the structural repairs, additions, alterations and modifications to it, the Speaker has said.
Mahajan has said the number of seats in the Lok Sabha is likely to go up after 2026 "in accordance with the provisions of the explanation to clause (3) Article 81 of the Constitution" while the present seating capacity of the House is 550 without any scope for increasing it any further.
"Even if the Central Hall of the Parliament House, which presently has seating capacity of 398, were to be converted into the Lok Sabha Chamber, it would not be in a position to accommodate more than 550 members," she wrote.
"This would also require re-designing and refurbishing of the sitting arrangements in the Lok Sabha Chamber. Whereas there are limitations to this in the present sitting arrangements in the Chamber, a new building will offer better scope for a modern Parliament building equipped qith latest technological tools," she said.
"Under the circumstances, there is an imperative need for the construction of a new state-of-art Parliament building," the Speaker wrote.
The second option could be the other side of Rajpath, which is "suitably large area and would enable a free design of a new Parliament House building", Mahajan said.
She suggested that an underground link beneath the Rajpath the two complexes may be constructed to provide connectivity between the existing building and the proposed new complex.