Google has been gradually improving real estate search on Maps. It doesn’t have the features and is generally not a substitute for sites like Trulia and Zillow but it’s getting better.
From the LatLong Blog:
First of all, we’ve made it easier to find real estate listings. Now, you can simply select “Real Estate” from the ‘More’ button on the top right of any Google Map to discover listings. From there, it’s a simple matter to refine your search using the left hand panel – price, bedrooms, bathrooms, and so on. Of course, you can still pan the map to search for the perfect neighborhood and it’ll automatically update with more listings.