[2] When Napier left in 1847, the house was bought by the Government of British India and used as an official residence by the Commissioners of Sindh up until 1936.

[2][3] The construction of the present Governor House building started in the year 1936 by renowned architect R.T. Russel and was completed in 1939, at a cost of 700,000 rupees.

The new building was built to replace the Government House, which had been in a state of disrepair and was no longer suitable for habitation.

[3] Sir Lancelot Graham, the first Governor of Sindh, laid the foundation stone of the building and started using it as his residence in 1939.

With the dissolution of the One Unit scheme and revival of provinces, Karachi was designated the capital city of Sindh.