Some in the often-backbiting art world undoubtedly resent his success, particularly since he has managed to draw some artists and estates from other galleries. Among Zwirner’s recent conquests are the artists William Eggleston and Felix Gonzalez-Torres (whom he shares with Andrea Rosen), as well as the Josef and Anni Albers Foundation. Yet even many of Mr. Zwirner’s competitors also concede that they like and respect him.
“He’s managed to do it with quality and style,” the longtime dealer Robert Mnuchin said. “That’s hard to do sometimes when you’re aggressive.”
Mr. Zwirner said he is aware of the pitfalls of overexpansion. As a result, when he opens the new gallery, he is likely to close his West 19th Street location, a rented space. He will keep his other Chelsea gallery, on West 20th Street, but “the center of gravity will move over to 21st Street,” he said. (He will also keep his gallery on the Upper East Side.)
“I feel very acutely that there is a too-much that’s possible,” Mr. Zwirner said. “You water down what you do.”
At the same time, he said he is conscious of trying to achieve that elusive balance of any big dealer these days: being attentive to the artists — with personal contact and regular communication — as well as ambitious for them, placing their work with leading museums and top collectors (who won’t just turn around and try to sell it for profit) and providing international exposure.
“Artists want you to stay small; they hate when stuff changes,” said Mr. Zwirner, who was born in Cologne, Germany, and speaks with a slight accent. “How do you keep it intimate while being able to compete in the increasingly competitive art market?”
“On the other hand, if you don’t move, some artists will feel you’re not doing enough for their careers,” he continued. “They want to have intimacy, but they also want to have the reach.”
Lisa Yuskavage, who joined the gallery in 2006, said that she was at first “surprised and disappointed” when Mr. Zwirner said her primary contact person would be one of his directors — Hanna Schouwink — rather than Mr. Zwirner himself. But she found Ms. Schouwink to be “nurturing and competent.”
“I call him the Wizard of Oz,” Ms. Yuskavage said. “He does have all of these people running Oz.”
For prominent artists and estates like those in Mr. Zwirner’s fold — Dan Flavin, Donald Judd — that means having a presence in the most important art centers, which increasingly includes Asia. And it also means having the most impressive headquarters in New York, which is what Mr. Zwirner seems to be going for with his new building by Mr. Piano — the architect’s first commercial gallery.
“It will upgrade the quality of my spaces, and that is something attractive for all these people that I need in my life — the artists and the people who work here,” Mr. Zwirner said.
The new gallery will be at 540 west 21st Street, part of a project that is being developed by the investor Uri Chaitchik of Casco Development. The gallery will be connected to Casco’s residential tower, but it will be a separate structure, with three floors of galleries.
The precise design has yet to be determined — Mr. Piano is in the early stages of the process. But it is likely to have a similarly spare aesthetic to Mr. Zwirner’s current spaces, by Annabelle Selldorf. Although he loves his Selldorf spaces — and the architect is a friend — he went with Mr. Piano on this project, Mr. Zwirner said, because he was the developer’s choice.
So far, Mr. Zwirner said, he has enjoyed working with Mr. Piano, whom he described as “one of my great heroes,” having admired his designs for museums like the Menil Collection in Houston, the Morgan Library & Museum renovation and the Beyeler Foundation in Basel, Switzerland.
Because this is Mr. Piano’s first commercial gallery, Mr. Zwirner said, “I have to remind him we don’t need coat checks, we don’t need ticket booths and the size of the lobby doesn’t have to be quite that large.”
In a telephone interview, Mr. Piano said he will seek to establish “a visual psychological connection between the building and the street,” as he did with the Whitney Museum of American Art in the meatpacking district.
“There is a porosity,” Mr. Piano said. “In this building, it will be the same thing. Its very important.”
Mr. Piano’s museums have been acclaimed for balancing a focus on the art with architectural distinction. “You kill art by making just white boxes, so you need to integrate emotion in some way,” he said. “You cannot be neutral, because otherwise you disappear.”
Groundbreaking is to take place this spring. Meanwhile, to celebrate its quarter-century, Zwirner Gallery has invited all of its artists to contribute a work for an exhibition that will open on Friday. The show will occupy all the gallery spaces in Chelsea.
The show will include new work by established artists like Richard Serra and On Kawara, as well as work by artists like Gordon Matta-Clark. Some pieces are being lent from museums and much of it will not be for sale.
Mr. Zwirner said his favorite in the show is a diagonal slash of neon by the lighting artist Mr. Flavin, which the dealer described as “an icon of minimalism.”
To watch Mr. Zwirner flip through a binder holding images of the works is to travel through the last 25 years of modern and contemporary art, accompanied by quick bits on their historical importance from Mr. Zwirner, whose father, Rudolf Zwirner, was a prominent European dealer.
To critics who question the corporate nature of Mr. Zwirner’s operation, Mr. Zwirner said they have only to look to the art — namely the acclaimed exhibitions the gallery has presented in just the last year — like the show of Yayoi Kusama’s Infinity Rooms that had people lining up around the block in the cold; the exhibition of Alice Neel’s paintings and drawings; and the quirky installations of Mr. Gonzalez-Torres.
“The reputation is in the quality of the shows that we put up,” Mr. Zwirner said. “You can say a lot of things about the gallery, but what do you say about the shows?”
Mr. Zwirner can’t help but look back fondly on starting out with 1,600 square feet on Greene Street in SoHo, where he opened in 1993, with the sculpture of Franz West, whose heirs recently decided to return to Zwirner. There was a Friedrich air-conditioner in the window and barely any heat.
“There was a simplicity in the early days that was charming,” Mr. Zwirner said. “The transition from what was classically a mom-and-pop operation to a global business — it’s much more complicated.”