Looking at inflation adjusted prices, the IE is about the same level it was in the late 80's. However, the crazy low interest rates make payments actually less, even when not adjusted for inflation. For example I own a rental that sold new in 1988 for $110k. Payments on that home back in 1988 were $1200/mo (PITI). Today that home is worth approx $150k. Buying that home today would result in a payment (PITI) of approx $900/mo. Adjusted for inflation today's payment is MUCH lower than the 1988 payment for the same home.
Obviously there are still loads of distressed properties. This will hold prices low for until those are worked through the system. But can prices go lower? It's hard to imagine that will happen. With the rental values and the home prices at these levels, investors can make more money buying and renting properties than they can in the markets or the banks. This alone should keep the prices from falling. I now have two rentals and would pick up a few more if I had the cash. I'm under no illusion of making money on appreciation of these properties but the rental income is a welcome addition to the monthly bottom line.
Here's a few of those charts

This one is the median sales price for Riverside. As you can see it's been relatively flat for a few years now.


And finally the long term chart with the inflation adjusted prices.