WeWork keeps on growing in Boston

Co-working company WeWork continues to expand at a brisk clip.MANDEL NGAN/AFP/Getty Images

WeWork is taking over another large chunk of space in downtown Boston.

The co-working giant is leasing 100,000 square feet at 33 Arch Street, an office tower in Downtown Crossing. It’s the sixth Boston location — along with one in Cambridge — for the fast-growing firm, which is quickly becoming a major player in Boston’s office market. It offers flexible, monthly leases on a small office or single desk, an arrangement becoming increasingly popular with both individuals and businesses.

While WeWork initially opened here in older brick-and-beam buildings near South Station, this is the second recent example of the co-working firm taking the sort of high-rise office space more typically associated with blue-chip tenants such as law firms and major banks.

At 33 Arch, WeWork will occupy about half of the space being vacated by ad firm Digitas, which is moving to a newly renovated building at 40 Water St. that is scheduled to open by year’s end.

For the landlord, the coming and going associated with a bustling co-working space can enliven a lobby and create a different mix of tenants than the typical corporate offices.

“They are sure to bring a vibrant and dynamic presence that will both add energy to the building and enhance the overall experience for all of our tenants,” William Abramowitz, director at TH Real Estate, which owns 33 Arch, said in a statement.

And for WeWork, adding a site in accessible — and increasingly tech-focused — Downtown Crossing, made a lot of sense, said Dave McLaughlin, the firm’s general manager for the Northeast.

“Downtown Crossing’s proximity to transportation, plus the shops, parks, and lunch spots nearby, make it the perfect spot to open our newest WeWork location in Boston,” he said in a statement.

WeWork expects the space, which will open later this year, will be large enough to accommodate about 300 companies, a spokeswoman said.

It also may not be WeWork’s last move in Boston this year.

The company reportedly is in talks to lease more offices in and around downtown, and a recent report from Cushman & Wakefield said it expects WeWork’s local footprint will “grow significantly in 2018.”