Getting Graphic is a semi-sort-of-irregular collection of our favorite real estate-related chart(s).
This monthly economic summary by Norther Trust called Oh Magic Eight Ball, Is Economic Growth Slowing Significantly? [pdf]  ponders a number of housing issues in a series of charts. I have provided two of the most relevant here from the report.
National housing affordability is at its lowest level since 1989 (down=lower affordability, gray=recession).
The spread between national sales and inventory levels is widening.