Back in August 2013, EB World subscribers received a vague email with reference to apartments in The Sims 4:
The long wait for The Sims is over, and it’s looking better than ever! In the newly announced Sims 4 you can create the stories you’ve always wanted to tell.
Will you make dramatic love triangles or generation long family feuds? Create the mansion of your dreams or make your Sims tough it out in a shabby apartment? You can do all this and so much more in The Sims 4!
But just a few days ago, SimGuruSarah pretty much confirmed that the ability to build apartments will not be a feature in The Sims 4 Base Game:
@Libra_Style Right now you can just build houses and community lots, like in The Sims 3 base game.
— Sarah Holding (@SimGuruSarah) June 14, 2014