If you can identify a subdivision that you want to look at we could crusie through and identify models sold during both time frames for comparison.
This is easier to do for homes that were not initially sold in 2004/2005 as new from a developer because those weren’t exposed through the MLS. MLS listings provide comments about extra features and conditions that the public record sources don’t have.
San Diego County doesn’t have a lot of areas that are comprised mostly of large subdivision projects, so areas like Mira Mesa, Rancho Penasquitos and east Chula Vista are good areas to analyze. They’re large enough to generate sufficient data for comparison, almost regardless of whether the economy is up or down, and they’re new enough that there haven’t been a lot of complete remodels or uber-additions.