[6] The funds to construct the Fulton Street Line east of Broadway Junction, including the Grant Avenue station, were allocated in 1939.

Grant Avenue was built as part of the extension of the IND Fulton Street Line east of Broadway–East New York.

[7] Funding for the station was allocated in the New York City Board of Transportation's 1939 Capital Budget, projected to be completed by 1942.

[9][10] By this time, the Board acquired private property on the east side of Grant Avenue for subway construction.

[18]: 143 [19][20][21] By 1947, the plans were modified so the IND line would instead use the nearby BMT Fulton Street Elevated along Liberty Avenue.

[22][23] Additional trackways were installed in the tunnel just east of Euclid Avenue for a potential connection to the Fulton Street El.

[31][32] In late 1952, the Board of Transportation began construction on a connection between the IND and both the Fulton Elevated and the Rockaway Beach Branch of the Long Island Rail Road, which included a new underground Grant Avenue station.

[6] Inside, there is a token booth, turnstile bank, fluorescent lights, newsstand, and three staircases to the platform.