Six Sigma


Excavation and Foundation Work Underway at 519 West 29th Street in Chelsea

Construction activity is underway at 519 West 29th Street in Chelsea, where a ten-story residential building is set to rise. Developed by Churchill Real Estate and Six Sigma with Rand Engineering and Architecture as the architect of record, the 135-foot-tall structure will yield 56,160 square feet divided among 60 condominiums. The site is located between Tenth and Eleventh Avenues on the western side of the High Line.

Read More

519 West 29 Street, rendering courtesy Six Sigma

Renderings Revealed, Demolition Permits Filed for 517, 519, 523 West 29th Street, Chelsea, Manhattan

Demolition Permits have been filed for 517, 519, and 523 West 29 Street, in West Chelsea, Manhattan. The site is just blocks away from Hudson Yards. This comes over a year after reports broke that developer Six Sigma paid a pricey $800 per buildable foot for 4,900 square feet of air rights to add to the project. The $3.92 million purchase allows the developer to add another floor to the top of the structure, which can be expected to sell for quite a sum. Six Sigma purchased the actual property for $54.75 million.

Read More

517 West 29th Street

Air Rights Acquired for 10-Story, 61-Unit Mixed-Use Project Planned at 517 West 29th Street, West Chelsea

Developer Six Sigma has acquired, for $3.92 million, 4,900 square feet of High Line Transfer Corridor air rights for its planned 10-story, 61-unit condominium project at 517 West 29th Street, in West Chelsea. The development rights will be used to build larger and taller, the New York Post reported. Not including the recently-acquired air rights, the 9,875-square-foot site can accommodate up to 74,260 square feet of residential space, plus an additional 24,490 square feet of commercial or community space. Plans have not been filed with the Buildings Department, although demolition permits were filed in August for the existing six-story warehouse. A construction timeline has not been disclosed.


517 West 29th Street

61-Unit Condominium Project Could Be Coming To 517 West 29th Street, West Chelsea

Back in October of 2015, Six Sigma was in contract to buy the six-story, 55,000-square-foot commercial building at 517-523 West 29th Street, in West Chelsea, for $54 million. The developer has since closed on the purchase and has now filed exploratory applications with the Attorney General’s office to gauge the demand for a potential condominium project, The Real Deal reports. Although details are sparse, the project would include 61 condominium units and ground-floor retail space. It’s not clear if the existing building would be demolished for a new one, although the site can accommodate up to 74,000 square feet of development potential (which means it currently has 19,000 square feet of air rights). Nothing has been filed yet with the Department of Buildings.


Fetching more...