You know I sometimes ask this question as well, because I am very worried about it during the creation of the project :- ).
Sometimes it's almost accident. Esp. for this project, it's 50perc. accident, 50 by design. Few notes:
-This particular project has strong color palette that is across every single room, medium tone beige paints, and dark warm woods. It's actually hard to work with it because these architects use beige and warm tones a lot and in order for them to stand out some cold contrast has to be introduced, otherwise you couldn't even tell it's beige as it would look flat.
-Thus I used a very simple lighting, in fact, for most of these spaces it's not even Sun&Sky, it's pure white color ! Well, little bit color white color ( 7000+ K Celvin, or even more?) to contrast with the warm artificial light (traditional 3600K fixtures). The white light doesn't need to be strongly white-balanced against, so it preserves the natural tones of the materials, saturating them in blacks, and desaturating them in highlights (where those warm paints end up looking almost white). Superbright highlights in windows can then be lightly painted blue.
-If some space has lot more windows, that would cause the room to look different (less directional light, so overall brighter) I add light blockers, like black wall behind the camera to stop the light from bouncing too much. This can keep different rooms (Bedroom with big windows and bathroom with single small window) looking more similar.
-Most important, post-production. I always check them back-to-back to make sure I didn't make one of them look wildly different, adding a lot more contrast or vibrance that others don't have.
But in the end, a little bit of luck perhaps helps :- )
Oh man, those images are from mid March, the project was finished in April. It sat on my hardrive for so long...
If anyone wonders why that kitchen image ended up flipped, is because the room arangement changed, but there wasn't time to do much about it, so we just moved the walls a bit and mirrored the image :- ) Client's suggestion !