The ninth-tallest building on our December countdown is 520 Fifth Avenue, a 995-foot-tall mixed-use supertall in Midtown, Manhattan. Designed by Kohn Pedersen Fox and developed by Rabina, which took over from Ceruzzi Properties and SMI USA in 2019, the 76-story structure will span 507,608 square feet and yield 98 residential units, commercial space, and four cellar levels. WSP is the structural engineer, DeSimone Consulting Engineers is the facade consultant, and Suffolk Construction is the general contractor for the property, which is located at the northwest corner of Fifth Avenue and West 43rd Street.
Excavation work has wrapped up since our last update in early July, and recent photos show crews in the process of building the reinforced concrete foundation slab and perimeter walls. Only the northwest corner of the foundations is visible through the sidewalk barriers, revealing an array of rebar protruding in preparation for the formation of the inner walls and columns. At the time our visit, workers were in the process of pouring concrete on the eastern end of the foundation slab. Below-grade construction will likely continue throughout the winter months, with the superstructure possibly emerging sometime before the start of spring.
Below are images from the same perspective from earlier this month that show the gradual build up of the foundations.
Renderings by DBOX show the skyscraper rising with a number of stepped setbacks, topped with terraces across the wide southern and slender eastern elevations. The façade appears to be composed of floor-to-ceiling glass framed with a grid of arched white paneling. A stepped crown topped with a mechanical bulkhead will cap the tower.
Below is a construction drawing that shows the setbacks from directly above.
520 Fifth Avenue’s completion date is posted on the construction board for June 1, 2026.