Oxford inks nearly 160,000 SF lease at 125 Summer Street to local email marketing company, Klaviyo

October 9, 2019


Oxford Properties Group ('Oxford'), the global real estate arm of OMERS, today announced a 159,860-square-foot lease to Klaviyo at 125 Summer Street in Boston. Klaviyo, a Boston-based marketing automation and email platform, will become the biggest customer in the building and join other building customers including Asics, Analog Devices, Haemonetics, and the very popular Tatte Bakery & Café. The 495,000-square-foot boutique office tower occupies a full block adjacent to Dewey Square.

Following a surge of growth and investment over the past year, Klaviyo looked to expand its headquarters location by 135,000 square feet. With the addition of the new space, the company will occupy seven consecutive floors, taking the entire fifth through 11thfloors.

"125 Summer Street is the ideal location for growing companies like Klaviyo," said Matt Polhemus, Director of Leasing Boston at Oxford Properties Group. "Klaviyo selected 125 Summer Street as a one-of-a-kind location to solidify their success and rapid growth, and we are happy they chose to grow their footprint with us."

In the fall of 2016, Oxford originally signed a lease with Klaviyo for 25,000 square feet at 225 Franklin Street. There were plans to grow to 75,000 within 225 Franklin; however, as Klaviyo’s space requirement continued to increase, Oxford and Klaviyo pivoted to a 160,000 square foot block of space at 125 Summer Street.

"We could not be more excited to expand our global headquarters right here in the heart of Boston at 125 Summer St. This is our city, it’s our home and Klaviyo is committed to building the next pillar technology company right here in the center of everything.  With this location, we can vastly expand our workforce and make a positive impact on the greater Boston community for years to come," said Steve Wietrecki CRO at Klaviyo.