Image courtesy of MC Real Estate Partners and Sasaki

The new owner of a downtown Boston office building will partner with anchor tenant Sasaki Associ. on redesigns of the 1899 structure.

New York-based MC Real Estate Partners acquired the 76,000-square-foot boutique office building at 110 Chauncy St., where Watertown-based Sasaki has signed a 16-year lease for the upper seven floors.

Sasaki will design its own space including plans for a private roof deck, and work with the new owners on updates to the lobby and retail space. Renovations will begin this spring to prepare for Sasaki’s 250 employees’ arrival in early 2022. The new owners also plan HVAC upgrades and addition of bike storage and showers, and are looking for tenants for approximately 12,000 square feet of office and retail space on the ground floor and basement.

MCRE’s local portfolio includes 485 Massachusetts Ave. in Cambridge and 201-207 South St. in Boston’s Leather District.

“MCRE shares Sasaki’s belief in the enduring appeal of workplaces set within energized urban environments,” Managing Principal Steve Grant said in a statement.

In February, Boston-based Berkeley Investments acquired Sasaki’s longtime headquarters in a former mill complex at 64 Pleasant St. in Watertown with plans for an office-lab redevelopment.