OFHEO's oversight responsibilities include:
Conducting broad based examinations of Fannie Mae and Freddie Mac; Developing a risk-based capital standard, using a "stress test" that simulates stressful interest rate and credit risk scenarios; Making quarterly findings of capital adequacy based on minimum capital standards and a risk-based standard; Prohibiting excessive executive compensation; Issuing regulations concerning capital and enforcement standards; and Taking necessary enforcement actions.
OFHEO also produces the House Price Index (HPI) at the national and state level. The HPI measures the appreciation rates by fiscal quarter:
Figure one shows California's HPI since 1991 and it ain't pretty: (http://www.ofheo.gov/media/pdf/statepdfs/CA.pdf)
The website also allows you to track HPI by three local areas (http://www.ofheo.gov/hpi_city.aspx) so check it out.