Construction and opening The 77th Street station was constructed as part of the Fourth Avenue Line. The plan for the line was initially adopted on June 1, 1905, before being approved by the
Appellate Division of the Supreme Court of New York on June 18, 1906, after the Rapid Transit Commission was unable to get the necessary consents of property owners along the planned route. The Rapid Transit Commission was succeeded by the
New York State Public Service Commission (PSC) on July 1, 1907, and the PSC approved the plan for the line in October and November 1907. As part of negotiations between New York City and the
Brooklyn Rapid Transit Company (BRT), and the
Interborough Rapid Transit Company for the expansion of the city's transit network, the line was leased to a subsidiary of the BRT. The agreement, known as Contract 4 of the
Dual Contracts, was signed on March 19, 1913.
Station renovations 1920s On June 27, 1922, the New York State Transit Commission commissioned its engineers to examine platform-lengthening plans for 23 stations on the lines of the
Brooklyn–Manhattan Transit Corporation (BMT), the successor to the BRT, to accommodate eight-car trains. As part of the project, 77th Street's platforms would have been lengthened from to . Progress on the extensions did not occur until February 16, 1925, when the
New York City Board of Transportation (NYCBOT) commissioned its engineers to examine platform-lengthening plans for this and eleven other stations along the Fourth Avenue Line. It estimated the project would cost $633,000 () (). The BMT had been ordered by the Transit Commission to lengthen these platforms since September 1923. The NYCBOT received bids for the project on February 25, 1926. The contract was awarded to the Corson Construction Company for $345,021 () (). The extensions opened on August 1, 1927.
1960s The city government took over the BMT's operations on June 1, 1940. In the 1960s, the New York City Transit Authority (NYCTA) started a project to lengthen station platforms on its lines in Southern Brooklyn to to accommodate 10-car trains. On July 14, 1967, the NYCTA awarded a contract to conduct test borings at eleven stations on the Fourth Avenue Line, including 77th Street, to the W. M. Walsh Corporation for $6,585 () in preparation of the construction of platform extensions (). The NYCTA issued an invitation for bids on the project to extend the platforms at stations along the Fourth Avenue Line between
45th Street station and
Bay Ridge–95th Street, including this station, on May 3, 1968. However, work had already started on the platform extension project in February. As part of the renovation project, the station's platforms were extended at its northern and southern ends, for a total of , and the station's elaborate mosaic tile walls were covered over with white cinderblock tiles. The latter change, which was also made to 15 other stations on the
BMT Broadway and Fourth Avenue Line, was criticized for being dehumanizing. The NYCTA spokesman stated that the old tiles were in poor condition and that the change was made to improve the appearance of stations and provide uniformity. Furthermore, it did not consider the old mosaics to have "any great artistic merit". In 2017, as part of an initiative to increase the
accessibility of the New York City Subway system, the MTA indicated that it was considering installing elevators at the 77th Street and
95th Street stations. ==Station layout==