[2] A fundraising campaign launched to finance the re-construction of the mosque attracted the generous amounts of donations from the Muslim as well as nonmuslim public.

Malabar Mosque was declared open by Yang di-Pertuan Negara Yusof bin Ishak on 24 January 1963.

[6][1][11] As part of the Islamic Religious Council of Singapore's (Muis) Mosque Upgrading Programme, in 2018, the mosque revealed a proposed plan to construct a three-storey annex which might result in the exhumation of around 10-15 unidentified graves and affect another 15 unidentified graves in the neighbouring cemetery.

[12][13] The proposed annex would house a female prayer space, a heritage gallery and classrooms.

[12] The S$ 5.87 million upgrading project which encompassed the proposed annex, and conservation and repairs to the original building began on 1 September 2020.

[16] The ground floor courts the Koran study area, the imam's room, and a visitors' lounge.