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Amazon is spending $1.4 billion to expand offices in six hub locations around the country to make space for 3,500 more employees, but Boston won’t be catching any growth in this round of the company’s expansion.

The company said Tuesday it will expand its “tech hub” offices in Dallas, Detroit, Denver, Manhattan, Phoenix and San Diego. The expansions are not connected to any single line of business, the company said, instead supporting ones “across the company” including AWS, Alexa, Amazon Advertising, Amazon Fashion, OpsTech and Amazon Fresh.

In total, Amazon said it would be adding 840,000 square feet of office space, including a new, 630,000-square-foot office in Lord & Taylor’s Fifth Avenue building in New York City.

Amazon already has several expansions underway around Greater Boston, from the Seaport to Medford’s One Cabot Road business park to a Westborough robotics hub.

The move comes as the local commercial real estate industry is trying to forecast the future of downtown office space as occupancy of leased office space remains low weeks into the state’s reopening and major local tech tenants like Google and Facebook have announced plans to let employees work remotely