[7] The greenfield airport is being built by the City and Industrial Development Corporation (CIDCO) through a public–private partnership (PPP) model on a Design, Build, Finance, Operate, and Transfer (DBFOT) basis in three phases.
[11] CIDCO appointed Rail India Technical and Economic Service (RITES) to prepare the masterplan of the airport.
[16] The foundation stone for the project was laid by Prime Minister Narendra Modi on 18 February 2018, and construction was started in August 2021, after more than three years of land acquisition.
The Ministry of Civil Aviation (MoCA) constituted a committee to examine various sites for an extension to Chhatrapati Shivaji Maharaj International Airport.
That September, CIDCO revised the original proposal to provide for a pair of parallel runways and submitted its feasibility report to the MoCA.
The TEFS was submitted to the State Government in September 2001,[18] following which the International Civil Aviation Organization (ICAO) conducted a simulation study that confirmed that simultaneous operation of two airports was possible with appropriate procedures in place.
In July 2008, the Government of Maharashtra granted approval for development of the project on a Public-Private Partnership (PPP) basis and appointed CIDCO as the nodal agency for its implementation.
[clarification needed] The Ministry of Environment, Forest and Climate Change (MoEFCC) gave its clearance for the airport on 14 May 2008.
[21] CIDCO appointed Pune-based Central Water and Power Research Station (CWPRS) in 2011, to study the hydrological impact of the airport on the surrounding waterbodies.
[26] GVK was the only bidder in the final two rounds of bidding, causing CIDCO to extend the deadline for the tender twice.
The project required the relocation of 2,786 households located across 10 villages—Chinchpada, Kopar, Kolhi, Ulwe, Varcha (Upper) Owle, Waghivalivada, Vaghivali, Ganeshpuri, Targhar, and Kombadbhuje.
[37] Prime Minister Narendra Modi unveiled the foundation plaque at the ground breaking ceremony for the airport in Mumbai on 18 February 2018.
Zaha Hadid Architects was selected on completion of a 12-week fast track design competition amongst the international architecture firms that were shortlisted by GVK.
[42] Land acquisition for the airport had officially been completed in 2019,[43] but the project faced rehabilitation and resettlement challenges due to opposition from project-affected-persons.
[44] CIDCO was able to hand over the entire 2,866 acres of land to Adani only in July 2022 after evicting all 3,070 structures in the project area.
[51] After the completion of Phase 1, the NMIA will be able to handle 20 million passengers annually, which is 40% of the existing Mumbai Airport’s total capacity.
[53] Once the airport is opened, most of the business jets, turboprops and charter aircraft using CSMIA will be moved to the general aviation bays and hangars of NMIA by the end of 2025.