There's been plenty of renovations without removing private offices, but it's mainly paint and carpeting with redone common spaces (kitchen, copy/mail rooms and

There's been plenty of renovations without removing private offices, but it's mainly paint and carpeting with redone common spaces (kitchen, copy/mail rooms and bathrooms). See 8/9/10/26/27/28 which all were done fairly recently. It doesn't make sense to gut the interior just to make a slightly different private office configuration, so it probably isn't considered a "significant" renovation.