By 1982, the entrances in the southern portion of Union Square were to be renovated as part of a refurbishment of Union Square Park. This work was performed over the latter half of that decade, with the entrances having been renovated by 1985. In the late 1980s, the 14th Street–Union Square station was renovated as part of the construction of the Zeckendorf Towers immediately east of the Lexington Avenue Line platforms. The towers' developers agreed to build and maintain subway entrances within the Zeckendorf Towers as "a public benefit", and in exchange, were allowed to develop the site. This was because of zoning rules that required many developers in Lower Manhattan, Midtown Manhattan, and Downtown Brooklyn to relocate and maintain subway entrances that were formerly on the street. The New York City Department of City Planning prepared zoning guidelines for the Union Square area, which would allow a greater maximum floor area ratio in exchange for subway improvements, particularly benefiting the Zeckendorf project.