Boston has a ton of colleges and using their facilities for an Olympics makes a lot of sense instead of building facilities that will never be used again.
One thing Boston does not have is an Olympic stadium. The plan for Boston 2024 according to USAToday is, "Boston also is proposing a "modular" Olympic Stadium. Instead of building a massive stadium that gets little use after the games end, as is typical in many Olympic cities, Boston organizers have said theirs can be repurposed, either reduced in size or dismantled and used at a different site."
There is talk of turning the stadium into a soccer stadium for the MLS team owned by the Krafts. A 60,000-80,000 seat stadium isn't cheap and I'm wondering if anyone has more details on the proposed stadium.
This article in the Globe says the stadium is one of 4 things that need to be built, "The exploratory committee determined that the Boston area . . . would need to add four major pieces of infrastructure: an 80,000-person Olympic Stadium, a 100-acre Olympic village to house 16,500 athletes, and special venues for cycling and aquatics.’’
If they really wanted to do it on the cheap they could have multiple Olympic villages and just use the existing colleges in town. There are more than 16,000 student dorms in Boston and nothing new would need to be built but that probably won't happen.