You might start at this site for hazards in your area
http://www.consrv.ca.gov/dmg/eq-index.htm -

another thing to consider is the depth and soil type beneath you - for southern california area/la basin see this site:
http://www.scec.org/phase3/basinmap.html

Usually what you are asking for is a job for a geologist - and even if one were to come to your house/building and tell you what to expect - some earthquake may just happen in such a fashion as to focus more energy (or less) right where your building is and the report is then no good.

I guess you might find something to give you a better idea about hazards in your area and building style but I'm sure there will be lots of caveats.

There are many things you can do to help yourself prepare - common sense things like don't hang bookshelves or a nice large picture over the head of your bed... see this link for more hazard reduction info:
http://www.scecdc.scec.org/eqcountry.html

Canie

• Putting down roots in earthquake country