The Mumbai Metro Rail Corporation (MMRC) has directed all landlords and housing societies located within a 50-metre influence zone on either side of the 33 km underground Mumbai Metro Line-3 (Aqua Line) to seek its approval before undertaking any redevelopment, construction, demolition, excavation or related activity. The measure aims to prevent any structural impact on the metro tunnels running from Cuffe Parade to Aarey Colony. In a public notice issued on 30 November 2025, the MMRC instructed all structures within this zone to obtain clearance from its Director (Planning and Real Estate). The corporation emphasised that redevelopment near metro infrastructure must incorporate special safety measures to avoid accidents beyond the construction site. The notice stated that safeguarding pedestrians and commuters is paramount, particularly from hazards such as falling construction equipment, toppling pile rigs or collapsing scaffolding and shuttering. Developers are required to comply with operational safety standards, conduct regular equipment inspections and mitigate risks associated with construction activity. According to a Hindustan Times report, the MMRC has received 31 queries from 13 developers in the past 18 months seeking higher Floor Space Index (FSI) through the Transit-Oriented Development (TOD) scheme. Major interested developers include K Raheja Corp, Prestige Group, Suraj Estate Developers and Valor Estate (formerly D B Realty). In 2024, the Maharashtra Urban Development Department amended the Development Plan to permit TOD along the underground Aqua Line, which links Cuffe Parade with Aarey near the Sanjay Gandhi National Park. The revised policy allows developers to access additional FSI of up to five for projects within a 500-metre radius of 10 Aqua Line stations, along with 35 per cent fungible FSI for rehabilitation projects. Eligible developments may also secure direct subway access to metro stations.