>>216568351
Depends. Underground parking is expensive and dependent on the geology, so its only doable if its high land value and favorable geology. A lot of these have structured parking, either they'll make the first 1 or 2 floors a parking garage or they'll have a parking garage in the middle and the apartments wrap around it (Texas donut). Texas donut is pretty much the default style apartment building in southern cities. Or if the apartment building is central enough, transit is passable and zoning allows, you can just have no parking at all.
In low land value locations, they'll often just have surface parking.