Is another big office building is coming to Cambridge?

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A view looking west along Broadway.Pickard Chilton

Another big office building is coming soon to Kendall Square.

The Cambridge Planning Board next month will consider Boston Properties' designs for a 454,000 square-foot, 19-story, office building at 145 Broadway. It's the first phase of nearly 1 million square feet of new development that Boston Properties is planning on land it owns along Broadway and Binney Street in the booming biotech district. Later phases include more office space and a large apartment and condo building that would reach as high as 34 stories.

Executives with the big developer said last month that they're in "advanced discussions" with a tenant for the office building. Signing a major tenant would enable them to start construction. Despite a flurry of new construction, Kendall Square's office market remains one of the tightest, and most expensive, on the East Coast.