Assuming this is an earthquake survival question you should be aware of all the research that has been done by the City into construction types and movement in the CAPPS program. Also look into NERT training for further knowledge on how to keep yourself and family safe.
One of the Cityâ€™s experts, Daniel Homsey, went to Christchurch last year and saw the damage done and looked at the recovery underway. One of the stories he told me pertains to your bedrock question. He and I live on Mt. Davidson which is bedrock and we assumed our homes were safe. In Christchurch homes on bedrock were lifted three and four feet straight up and then settled right back down. There are very few structures built that can take that kind of movement.
Still Iâ€™d rather live here than most other places! Even though I work to build earthquake preparation and community resilience â€“ in my free time â€“ I think most San Franciscanâ€™s get up every day saying â€œthe sun is going to shine and there will be no earthquake todayâ€. Is that burying your head in the sand or is just the way it has to be to live in restless terrain?
Here are two sites that are very useful. This one allows you to input an address, zip code etc. http://gis3.abag.ca.gov/Website/Shaking-Maps/viewer.htm