According to CoStar, there are 4 Class A buildings under construction that can accommodate users of 50,000 square feet or more. They are located in the Seaport and Back Bay and have combined number of 1,610,202 square feet.
|Building Address||Submarket Name||Number Of Stories||Rentable Building Area||Typical Floor Size||Max Floor Contiguous Space||Total Available Space (SF)|
|888 Boylston||Back Bay||17||425,000||25,000||26,170||89,173|
|100 Northern Ave||Seaport||17||395,202||23,247||32,006||154,931|
|140 Northern Ave||Seaport||13||375,000||30,769||28,846||374,998|
|121 Seaport Blvd||Seaport||17||415,000||24,412||34,400||414,202|