Office

343 Madison Avenue. Rendering courtesy of Volley STudio.

343 Madison Avenue Secures Long-term Tenant In Midtown, Manhattan

7:30 am on January 10, 2026 By Max Gillespie

Starr Insurance Companies has signed a 20-year lease to occupy approximately 275,000 square feet at 343 Madison Avenue, a 46-story commercial skyscraper under construction in Midtown East, Manhattan. Designed by Kohn Pedersen Fox and developed by BXP, the 844-foot-tall structure will yield 930,000 square feet of office space. Starr will relocate its headquarters to floors 16 through 27 in the tower. The property is located between East 44th and 45th Streets.

5 Times Square Begins 1,250-Unit Office-to-Residential Conversion in Midtown, Manhattan

8:00 am on January 4, 2026 By Michael Young and Matt Pruznick

Work is underway on the office-to-residential conversion of 5 Times Square, a 38-story skyscraper in Midtown, Manhattan. Designed by Gensler and developed by RXR Realty, Apollo Global Management, and SL Green, the project will transform the 575-foot-tall structure’s 917,745 square feet of vacant office space into 1,250 rental units. Of this total, 313 will be permanently affordable for residents earning up to 80 percent of area median income (AMI). The property is located along Seventh Avenue between West 41st and 42nd Streets.

Morgan Stanley Headquarters Continues Renovations at 1585 Broadway in Times Square, Manhattan

7:30 am on January 4, 2026 By Michael Young and Matt Pruznick

Renovations are progressing on 1585 Broadway, a 42-story office skyscraper in Times Square, Manhattan. Designed by Gensler, the project involves the re-cladding of the 685-foot-tall structure’s podium and refurbishments to the tower’s 1.3 million square feet of office space. The building was completed in 1990 and serves as Morgan Stanley’s global headquarters. The property is located between West 47th and 48th Streets.

JPMorgan Tower’s Exterior Nears Completion At 270 Park Avenue in Midtown East, Manhattan

8:00 am on December 31, 2025 By Michael Young and Matt Pruznick

Occupying the number-one spot for the fourth and final time on YIMBY’s annual construction countdown is the JPMorgan Chase Tower, the financial institution’s 1,389-foot supertall headquarters at 270 Park Avenue in Midtown East. Designed by Lord Norman Foster of Foster + Partners and developed by Tishman Speyer, the 60-story skyscraper yields 2.5 million square feet of office space with a capacity of 14,000 employees, and is the tallest structure in New York completely powered by upstate hydroelectric energy.

520 Fifth Avenue’s Exterior Nears Completion in Midtown, Manhattan

8:00 am on December 24, 2025 By Michael Young and Matt Pruznick

The eighth-tallest building on our year-end construction countdown is 520 Fifth Avenue, a 1,002-foot mixed-use supertall skyscraper in Midtown, Manhattan. Designed by Kohn Pedersen Fox and developed by Rabina, the 88-story structure will span 415,000 square feet and yield 100 condominium units and 25 floors of boutique office space. The project will also include ground-floor retail and an extensive collection of amenities. The property is located at the corner of Fifth Avenue and West 43rd Street, one block north of Bryant Park.

Excavation Underway for 844-Foot Skyscraper at 343 Madison Avenue in Midtown East, Manhattan

8:00 am on December 22, 2025 By Michael Young and Matt Pruznick

At number ten on our year-end construction countdown of the tallest projects in New York is 343 Madison Avenue, an 844-foot-tall commercial skyscraper in Midtown East, Manhattan. Designed by Kohn Pedersen Fox and developed by BXP, the 49-story structure will yield 950,000 square feet of office space and a collection of tenant amenities. The property is located between East 44th and 45th Streets.

Lumen LIC Nears Completion at 23–15 44th Road in Long Island City, Queens

8:00 am on December 17, 2025 By Michael Young and Matt Pruznick

The 15th-tallest building on our year-end construction countdown is Lumen LIC, a 754-foot-tall residential skyscraper nearing completion at 23-15 44th Road in Long Island City, Queens. Designed by Hill West Architects and developed by FSA Capital, the 66-story structure spans 855,400 square feet and yields 938 rental units with an average scope of 910 square feet. The project will also include lower-level office space and 17,400 square feet of ground-floor retail. The residential inventory is planned to include 282 affordable housing units. The property is alternately addressed as 43-30 24th Street and located along 44th Road between 23rd and 24th Streets.

Foundations Underway for Alloy Block’s Second Phase at One Third Avenue in Downtown Brooklyn

8:00 am on December 16, 2025 By Michael Young and Matt Pruznick

At number 16 on our year-end countdown of the tallest construction projects in New York is One Third Avenue, a 725-foot-tall mixed-use skyscraper in Downtown Brooklyn‘s Alloy Block complex. Designed and developed by Alloy Development, the 63-story structure will yield 583 residential units, with 153 designated as permanently affordable. The project will also include 60,000 square feet of Class A office space and 30,000 square feet of retail. The structure is aiming for the title of tallest Passive House-engineered building in the world and will rise between State Street and Lafayette Avenue.

70 Hudson Yards. Photo by Michael Young.

Foundations Underway for 717-Foot Skyscraper at 70 Hudson Yards in Hudson Yards, Manhattan

8:00 am on December 15, 2025 By Michael Young and Matt Pruznick

At number 17 on our year-end construction countdown is 70 Hudson Yards, a 717-foot-tall commercial skyscraper in Hudson Yards, Manhattan. Designed by Roger Ferris + Partners and Gensler and developed by Related Companies and Oxford Properties, the 47-story structure is planned to become New York’s first zero-carbon emission skyscraper and will yield 1.1 million square feet of office space. The property is bounded by West 36th to the north, West 35th Street to the south, and Hudson Boulevard East to the west.

570 Fifth Avenue, Designed by Kohn Pedersen Fox.

Excavation Continues for KPF-Designed Skyscraper at 570 Fifth Avenue in Midtown, Manhattan

8:00 am on December 8, 2025 By Michael Young and Matt Pruznick

The 24th-tallest project on our year-end construction countdown is 570 Fifth Avenue, a 567-foot-tall commercial skyscraper set to rise on the eastern edge of the Diamond District in Midtown, Manhattan. Designed by Kohn Pedersen Fox and developed by Extell, the 32-story structure will yield nearly 1.1 million square feet, with the majority devoted to Class A office space. The project will also contain retail space on floors one and two, an 80,000-square-foot flagship store for IKEA on the first two cellar levels, as well as a gym, swimming pool, basketball court, and juice bar on the third and fourth below-grade stories. The property is located between West 46th and 47th Streets.

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