This is specifically related to the SF Bay Area and there is a link to the source which has a easy-to-use Excel sheet of the data, so feel free to make an awesome geo-mashup:<p><a href="http:&#x2F;&#x2F;www.lao.ca.gov&#x2F;Publications&#x2F;Report&#x2F;3345#Technical_Appendix" rel="nofollow">http:&#x2F;&#x2F;www.lao.ca.gov&#x2F;Publications&#x2F;Report&#x2F;3345#Technical_App...</a><p>Also, the measure is not whether available housing is getting more expensive, but whether low-income households are being displaced.