A map via wikipedia which maps College and Universities. From what I can tell, it is a slightly strange amalgum of buildings occupied by a college’s facilities in some respect. I suspect it doesn’t make a distinction between buildings or land owned by instiutions and that which is just leased by it. It fails to do so in at least one case I can confirm. There is a small bar in dark red beneath Bay State College, suggesting that that plot is occupied by the College. As a former employee who worked for the College in that dark red square, I can attest that it lease the second floor of the red rectangle and as recently as 2010, leased only part of that area.
The BU holdings appear to be accurate, though I’m not sure it gives the correct amount of holdings in the wedge between the pike and Beacon Street, since I thought it owned more buildings along Beacon on the north side of the street.
I worked for a company that rented a the red square set off by itself on the north side of Beacon, though the part of the larger business which occupied it, the Boston Book Annex is now gone, though the store I worked at, the Boston Book Company, a rare book dealer, is alive and well. It’s a bit funny how much of my life I can see in this map: the two colleges I attended and the places I worked while I lived there. I moved away last August and haven’t made it back since. I keep telling myself I should get back, especially as my sister works somewhere in that harvard Crimson blob, but it doesn’t seem I’ve been gone so very long, so it doesn’t pull much at me yet.