For an amount of Rs 66 billion, the MMRDA is building the 13.83 km long Mumbai Metro Line 7A and Line 9, which connects Mira-Bhayander to the suburbs of Mumbai. According to the response to an RTI request, a staggering Rs 92.5 million was used to deploy traffic controllers and regulators. The MMRDA has also invested Rs 143.7 million since 2020 to divert a sewer line running parallel to Line 7A's track near the airport, and Rs 490 million to divert power lines.

On the metro corridors being built in the city and the Mumbai Metropolitan Area, there is a newspaper had submitted an RTI to the MMRDA. The proposal asked for details such as the general construction costs for line 9, which includes eight stations, and the amount spent from the date of tender allocation in January 2020 to 20 February 2023. The MMRDA responded, revealing that Rs 19.98 billion has already been spent on civilian work for lines 9 and 7A.

The MMRDA spent Rs 349 million to engage a detail design consultant (DDC) for architecture and civil works construction services, depots, stations, staff quarters and auxiliary structures for line 9 and part of line 5. The amounts spent for the appointment of a General Adviser (GC) for civil work of line 9 and part of line 5 are Rs 2,230 million and Rs 206.4 million respectively.

The answer states that Rs 498.7 million was spent on various tasks related to the 220/110kv M/C Ghodbunder-Versova transmission line between two locations near Silver Park and the 220kv Dahanu-Versova transmission line between two locations near Shahid Bhagat Singh Garden, both are owned by AEML. The MMRDA also spent Rs 861.2 million to establish a new police station in Nagghar, while Rs 143.7 million was paid to divert a 1,800mm diameter sewer pipe that crossed the path of line 7A close to Chhatrapati Shivaji Maharaj International Airport. In a press release earlier, MMRDA reported that the three-tiered Medetia Nagar station on line 9 is 63.63% complete.