Some of the stuff that would help-
-more details - for example the glass banister doesn’t have any hardware in terms of bolts or things for how it’s installed. Also, the glass material there doesn’t look good, I don’t know if there’s another material setup out there for that kind of glass that would work better
-more imperfections
-it’s missing stuff like power outlets and air conditioning vents
-add round corners on some of the walls and edges, since nothing in real life has 90-degree corners
-add more variation to the grass, there won’t be as much grass under trees and in corners where there’s less sunlight
-look into using tesselation/displacement in some materials, especially for things like stone this makes it so that the stones stick out further than the grout.