The slender skyscrapers changing New York's skyline

The Empire State Building, the Art Deco Chrysler Building, the super-tall One World Trade Center. New York City is ho...

Posted: Feb 13, 2018 9:55 AM
Updated: Feb 13, 2018 9:55 AM

The Empire State Building, the Art Deco Chrysler Building, the super-tall One World Trade Center. New York City is home to some of the world's most iconic skyscrapers.

But the buildings entering its famous skyline today are doing something unusual. They're getting skinnier.

Take The Steinway Tower at 111 West 57th Street. Upon completion in 2019, the 1,428-foot-tall (435-meter-tall) building in Midtown Manhattan will not only offer unobstructed views of Central Park, it will also be the slenderest skyscraper in the world, with a width-to-height ratio of 1:24.

Russia, meanwhile, is building its first supertall skinny skyscraper also in Midtown. Moscow-based developer Meganom's "shelves in the air" will top out at 1,001 feet (305 meters) at 262 Fifth Avenue and boast a slenderness ratio of 1:20.

Both buildings are part of a tribe of slender climbers sticking their skinny necks into the city's architectural conversation.

What is a slender skyscraper?

Slenderness is not in the eye of the beholder when it comes to skyscrapers, at least. In this field, it is a technical engineering term. Whether it can be applied to a building is determined by the structure's base width to height ratio, according to Carol Willis, an architectural historian and founder of the Skyscraper Museum in New York City.

"Structural engineers generally consider skyscrapers with a minimum 1:10 or 1:12 ratio to be slender," Willis says.

In 2013/2014, the Skyscraper Museum museum presented its "Sky High & the Logic of Luxury" exhibition, documenting the rise of skinny structures in Manhattan. Slender buildings featured in the show included the 1,396-foot-tall (425.5-meter-tall) 432 Park Avenue; One57 aka "The Billionaire Building;" and the distinctive "stacked homes" 56 Leonard tower.

"New York's slender buildings are unique as a development in skyscraper history -- they're different to simply tall buildings," Willis says, adding that when deciding which skyscrapers to include in the show her team "accepted the slenderness ratios provided by their engineers."

Determining a building's slenderness ratio is often not a precise science, she cautioned: "Exact slenderness ratios are difficult to calculate because the bases and shafts are often very different widths as the buildings rise."

Why slim down?

So when did developers start slimming down their skyscrapers -- and why?

Willis says the "engineering and development strategies of slenderness were first seen in around 2007." She pinpoints luxury residential condominiums One Madison Park, on Broadway and Park Avenue, and Sky House, between Fifth Avenue and Madison Avenue, as the first "slenders" to have cropped up in New York.

Complex zoning laws in the city were a motivating factor, Willis explains. While such regulations restrict the amount of land that can be built on within an area, a loophole allows for the transference of "air rights" from one plot to another. So developers could buy a small parcel of land, then buy air rights from adjacent plots and stack these to gain permission to build a tall tower. For example, if an existing building is shorter than its maximum allowed height then the developer of a new adjacent property could purchase the unused air rights, and stack them to the air rights of their existing plot -- such a transaction is called a "zoning lot merger."

Technological advancements also contributed to the rise of the skinnies.

"Over the past decade, advances in materials and engineering have made building 'supertalls' possible, specifically those with smaller footprints," says Jonathan Miller, president and CEO of New York real estate consultancy Miller Samuel. Towers between 980 feet (300 meters) and 2,000 feet (600 meters) high fall into the "supertall" category.

Standing out from the crowd

While developers typically strive primarily for return on investment, they often also want to create a structure unique enough to get the market's attention, says Miller. Slender designs, which come in all shapes and sizes, tick that box.

Take 111 Murray Street, in Tribeca, which will feature a curved, glass exterior and boast access to luxurious amenities including a concierge private jet service. Or 125 Greenwich Street, designed by award-winning architect Rafael Vi-oly, which will be split into three glass prisms with landscaped gardens separating them. Meanwhile, the 800-foot-tall (244-meter-tall) 130 William tower in lower Manhattan, by architect David Adjaye, will forgo a glass fa-ade altogether in favor of stone and masonry, materials that pay homage to the history of the street it's located on.

"They are competing with other developers to stand out. The stakes are high financially, so design becomes a big part of the effort," says Miller.

Tall, skinny and good looking

Though the slenderness of a building is not defined by its height, slender towers do tend to be tall -- the "runway models" of the real estate world.

"Out of my window I can see one of these slender towers, which is 60 stories tall," Willis says. "The 30 stories at the top have an uninterrupted view of the skyline. So you're just setting the bar higher ... raising someone's neck, head and eyes above a crowd. "It lends a level of prestige that people are willing to pay additional money for."

Miller agrees. "In many cases this new generation are nearly twice as tall as the prior generation, going from 50 stories to nearly 100 stories, yet sitting on a much smaller footprint."

Supertall slenders can increase the desirability of their neighborhoods. "As a new class of building, they are not always in (traditionally) premier locations -- in fact, their tallness is often used to 'blaze a trail' in an untested residential location," says Miller.

He cites "Billionaires' Row", on 57th Street in Manhattan -- home to many slenders -- as an example.

"It is the central business district and (previously) not known for residential luxury buildings. The introduction of supertalls helped this location morph into a new identity as 'Billionaires' Row.'"

Setting an example?

New York is not the only place with a taste for slender skyscrapers.

In 2003, the 828-foot-tall (252-meter-tall), 75-story luxury residential tower Highcliff was opened in Hong Kong -- a city that, along with New York, has one of the most expensive real estate markets in the world, and a distinct lack of space on which to build. Highcliff has a slenderness ratio of 1:20. Upon completion, its developers claimed it was the slenderest residential property in the world.

Meanwhile, the 73-story Elysium Melbourne -- which measures just 12 meters wide at its narrowest point -- is set to become that Australian city's tallest and slimmest building. Its construction has been approved, although the completion date has yet to be confirmed.

In Sao Paulo, Brazil, AIR Madalena is a decidedly skinny residential property -- the 12 story building has a fa-ade that is narrower than the average single-car garage.

It remains to be seen how long skinny stays in style.

Lafayette
Cloudy
32° wxIcon
Hi: 33° Lo: 27°
Feels Like: 26°
Kokomo
Cloudy
28° wxIcon
Hi: 30° Lo: 26°
Feels Like: 18°
Rensselaer
Cloudy
28° wxIcon
Hi: 30° Lo: 26°
Feels Like: 20°
Lafayette
Cloudy
32° wxIcon
Hi: 31° Lo: 25°
Feels Like: 26°
Danville
Cloudy
32° wxIcon
Hi: 33° Lo: 26°
Feels Like: 24°
Frankfort
Cloudy
30° wxIcon
Hi: 33° Lo: 26°
Feels Like: 20°
Frankfort
Cloudy
30° wxIcon
Hi: 31° Lo: 26°
Feels Like: 20°
Monticello
Cloudy
29° wxIcon
Hi: 31° Lo: 27°
Feels Like: 21°
Monticello
Cloudy
29° wxIcon
Hi: 33° Lo: 28°
Feels Like: 21°
Logansport
Cloudy
28° wxIcon
Hi: 30° Lo: 26°
Feels Like: 18°
Cloudy Monday With A Few Flurries
WLFI Radar
WLFI Temps
WLFI Planner

Indiana Coronavirus Cases

Data is updated nightly.

Cases: 590211

Reported Deaths: 9310
CountyCasesDeaths
Marion815581297
Lake44306666
Allen31919541
Hamilton28371304
St. Joseph26766371
Elkhart24098341
Vanderburgh18643213
Tippecanoe17422121
Johnson14496284
Porter14399160
Hendricks13870241
Madison10561212
Vigo10483171
Clark10240130
Monroe9076108
Delaware8836132
LaPorte8771155
Howard7897138
Kosciusko787277
Warrick643890
Hancock638797
Bartholomew626694
Floyd6150105
Wayne5933157
Grant5818110
Dubois544372
Boone534367
Morgan516291
Marshall494184
Henry493664
Cass471760
Noble460557
Dearborn458444
Jackson414745
Shelby402179
Lawrence380575
Clinton364539
Gibson356556
DeKalb337363
Montgomery334851
Harrison328542
Knox327839
Miami309843
Steuben306340
Adams295235
Whitley294125
Wabash293045
Ripley292345
Putnam284847
Huntington283557
Jasper282433
White267538
Daviess261672
Jefferson250738
Fayette242348
Decatur242182
Greene233360
Posey232326
Wells229447
LaGrange224161
Clay217932
Scott216937
Randolph208340
Jennings192535
Sullivan189031
Spencer181917
Fountain179725
Washington177118
Starke171341
Jay162821
Owen159537
Fulton159229
Carroll152115
Orange151433
Rush149918
Perry147227
Vermillion144933
Franklin143433
Parke12908
Tipton128232
Pike113625
Blackford107522
Pulaski95237
Newton89421
Brown85530
Benton84310
Crawford7579
Martin70013
Warren6587
Switzerland6205
Union6113
Ohio4677
Unassigned0374

COVID-19 Important links and resources

As the spread of COVID-19, or as it's more commonly known as the coronavirus continues, this page will serve as your one-stop for the resources you need to stay informed and to keep you and your family safe. CLICK HERE

Closings related to the prevention of the COVID-19 can be found on our Closings page.

Community Events