This is such buzzword powered horseshit. Absolutely nothing about this problem domain requires Deep Learning. Simple regression models if implemented properly can do just fine. Not to mention that sites like Redfin/Zillow have access to far more data and already have pretty good models for the most part. Just because you can throw a Neural net at a given problem, doesn't make it the right thing to do... I'd be a lot…
As much as I like the phrase "buzzword-powered horseshit," there are always opportunities to apply new technologies in a creative way. In this case, it seems obvious to me that NNs will do a good job in identifying latent features that would otherwise slip past a linear model.
If the OP had actually posted a blog talking through things he did and how the NN helped and why he believes it is actually learning something useful and not just learning the noise, then this would certainly be interesting. But I've seen far too many people take powerful, flexible models with a large number of parameters and throw them at simple problems, with insufficient data and thought.
I'd normally give someone the benefit of the doubt...but taking the sum total of the quality of the linked web page, the complete lack of any meaningful information, as well as op's reply to my comment that added no real useful information regarding the actual benefit of throwing deep learning at this, I'm still inclined to stick to my original feelings regarding this post.