NAD: You can probably find a reasonable place to rent in SLO county, near the ocean for $1200/month (notice I didn't say beside the ocean). You could even buy a place for around $350,000. It won't be the nicest thing around, but it would still be well worth the money.
JayKeeley: You can't find anything within 100 miles of the ocean for $250,000. I take it you want to live in the city. San Diego would be a little cheaper than SF, but still WAY more than $250,000. Don't get discouraged, though. If you can somehow get into something in CA, the price will only appreciate from there. You just have to continually upgrade, until you find something good enough for you.