Well, it's pretty rare for a building to look nothing like its renderings actually.
There are instances where we pounce on a project because it's experienced some value engineering, something we call The Cheapening™, where some details may have been omitted in the end. That seems to happen more often to canted elements than anything else: Vü condos and Limelight both lost angled columns.
The most frequent difference between renderings and finished buildings would be spandrel. Spandrel sections are frequently left out of renderings, and simply shown as windows. One of the reasons why is that sometimes the exterior is designed and the renderings created before the suite layouts have been finalized. Without them settled, it's not known where some of the interior walls and spandrel panels will be. That said, I believe that developers should do what they can to minimize the difference between vision glass and spandrel if they aren't going to render them.
Okay, I'm blathering. Yes, there are occasional differences. No, buildings are rarely "nothing like" the renderings. I'd be surprised if this one turns out significantly different from it's renderings.
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