Some Massachusetts legislators are calling for Seaport Square, which will fill the final 12.5 acres of the Seaport District, to have a Boston Public Library branch. The development is already stacked, with 3.2 million square feet of residential space; 2.8 million square feet of office space; a 476,800-square-foot hotel; 1.12 million square feet of retail, restaurant and entertainment space; and two 5,000-square-foot spaces for “civic, education and cultural” use, according to The Boston Globe. If approved, a library could potentially fill one or both of those spaces.

Elsewhere in Boston real estate news:

• After 20 years of buildup, Fenway Center could break ground before the end of the year, according to the Globe. The massive $600 million development is set to have have 1.1 million square feet in five buildings built above a portion of the Massachusetts Turnpike. Upon completion, Fenway Center will have 650 residential spaces.
• Over in Quincy Center Station, a proposed development would add 602 apartment and office and retail space to the neighborhood’s landscape, Curbed reported.  The proposal also includes upgrading the adjacent Red Line stop and adding a new bus terminal.
• Changes keep coming to Allston-Brighton, with Harvard University revealing a plan to build at least four buildings — two office/lab buildings, a hotel and conference center, and an apartment building — on 14 acres along Western Avenue. The university said it’s aim is to create “an urban living space,” Curbed reported.