I really like the interior scenes! I think you should lower the reflectivity on the fridge though...it's like a mirror almost..maybe give it some bumpy/grainyness...or...you could make it look more like steel and the high reflectivity would work better.
The windows also look a bit opaque...maybe increase the transparency on those...a good way to make glass is to make the color nearly black, not quite...and then increase the transparency...You might also think about adding some "dirt" to the scene...everything looks very new and shiny and unlived in.

Looking really good though...it's already got the look of realism...just a few things that stand out.

Its a nice design as well...are you modeling this after your own house or are you using some references?