[Urbannizer]

A new look for the North Station office tower being built by Boston Properties

Boston Properties is changing the design of its office tower at The Hub on Causeway, a $1.2 billion mixed-use development going up now above North Station, as it tries to “respond to a new generation of office companies and their workforces,” the developer wrote in a recent notice of project change filing to the city of Boston.

The Hub on Causeway’s office tower was originally approved to rise 420 feet and span 668,000 square feet. Boston Properties is seeking approval now to build a 24-story tower rising 495 feet at its highest occupiable point, spanning 651,500 square feet.

The office tower’s new design aims to “create an indelible mark on the city skyline,” Boston Properties wrote in its notice of project change.

“The design team has made an effort to move away from a conventional glass clad tower,” the notice of project change filing states. “The overall massing of the building has been reshaped to respond not only to internal tenant needs but also to better integrate the structure with the scale and texture of its immediate surroundings.”

The office tower will sit above “The Hub,” a low-rise retail and entertainment space that will function as the new entrance to North Station and was formerly identified as Champions Row. The project is up for discussion at the Boston Civic Design Commission on Tuesday.