I think the overall layout is nice. Howerver there is a few things that i think you should consider:
It is lacked of small details, and very blocky, like the table, couch and plant inside, or the wall. You can fix by adding texture on walls, and don’t just use one material for the whole thing, use different and appropriate materials for each particle,…
It doesn’t look really hi-tech in my opinion, it’s because of the materials you chose. Wooden and brick aren’t suitable for the style.
I’m not sure about what outside upstairs leading to, but no matter what the purpose, it’s very plain. Maybe you can add railings, a path to the helicopter landing site.
