The result, nationally as well as in Manhattan, is offices with less space for desks and more square footage for conference rooms or other activity space areas, as some designers call them. Also popular with architects and designers are "refuge rooms" to which employees can retreat when the buzz around them proves distracting — the open-office equivalent of the low-decibel "quiet car" on many trains.
The argument for more communal space is that open offices foster communication and accidental creativity — that serendipity is a plus, if serendipity is defined as bumping into co-workers and chatting about projects they may not necessarily be assigned to.
The comic strip "Dilbert," which has long lampooned office culture, anticipated the personal space squeeze in 2013. The character identified as the Boss was trying to justify declines in productivity to the chief executive. He explained that the engineers had first moved from private offices to cubicles. Then they had been assigned to an open-plan area.
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The chief executive asked, "Have we tried putting all of them in one clown car?"
The Boss replied, "No, but I don't see why that wouldn't work."
Scott Adams, the cartoonist who created "Dilbert," said it was no surprise that individual breathing room in the workplace was being reduced. "But computers have gotten smaller and the need for storage of paper has disappeared," Mr. Adams said. "If you've got a place to hang a coat and a place to sit with a laptop, you've got everything you need."
While space is getting tight in many places, there is every indication that offices are even tighter in the New York area. Justin Mardex, a member of CoreNet's New York City chapter, surveyed 10 recent projects and found that the average came to 120 square feet per employee. The most generous amount set aside was 178 square feet per person. The smallest was 93 square feet per worker.
It is not just underlings who are losing the office space race. "There's a unilateral flattening," said Tom Krizmanic, a principal of Studios, an architecture and design firm. "Even the C.E.O., the C.F.O. used to have more."
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But Louis D'Avanzo, the chairman of CoreNet's New York City chapter and a vice chairman of Cushman & Wakefield, cautioned that if individual space dwindled to less than 100 square feet per person, "it can be a very dense environment."
And, some cubicle-dwellers add, too noisy for sustained concentration. Suzanne Carlson, a partner at Mr. Langlands's firm, recalled a recent conversation in which she found herself saying that the private office needed to make a comeback, but with one important qualification. "It does not need to be owned," she said — meaning that no one person's name is on the door. "This is about the existence of a private space you can go to for refuge," she said. "If you don't have that refuge, it's horrible."
Yodle's move to West 34th Street near Ninth Avenue is being overseen by Arnold F. Madisson, who was deputy executive director of facilities, construction management and operations for the last two years of Michael R. Bloomberg's time as mayor. "The idea was to go around to the last of the offices and tear them down," Mr. Madisson said. "One million square feet. I believe in openness."
Yodle's chief executive, Court Cunningham, so values being close to other employees that he does not want a private office. He even dictated that the desks in Yodle's new quarters be relatively small: No more than 5 feet wide and 2 1/2 feet deep.
"We believe a lot of individuals don't need their own space," Mr. Madisson said, adding, "We talked about what if we eliminated desks." Long tables would have given each person even less space, he said — about 2 feet wide by 1 ½ feet deep.
Ms. Sarnoff, Yodle's head of consumer marketing, spent that first night agonizing. "I remember telling my husband about it," she recalled. "He said, 'Would you not take the job if you didn't have an office?' He actually said that to me, and I said, 'Would that be a bad reason not to take this job?' "
She became a convert. "It's fun," she said. "That's the reason I wouldn't want an office. It's fun — if you like the people you work with."