Foxrock Granite LLC, a division of Granite Telecommunications, has closed its $13.98 million purchase of 150 Newport Ave., a Quincy office building that’s near Granite’s headquarters, said a broker involved in the transaction.

The broker is Jones Lang LaSalle, which represented Foxrock Granite in the sales negotiations. Granite is a provider of telecom and related communications services. The seller was Normandy Newport Holdings LLC, a real estate operator and investment manager headquartered in Morristown, N.J.

The four-story building at 150 Newport Ave. has 121,329 square feet of space, Jones Lang LaSalle said.

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“The building’s convenient location next to Granite’s existing headquarters made it a natural to buy,” Jones Lang LaSalle executive vice president Tom Kent said in a statement. “This will help them maintain their rapid growth across business lines, continue their strong presence in the community, and draw quality talent by offering great access to public transportation and I-93.”