Finding acreage in Los Angeles County is easy. Finding something that has road access, power and the potential for well water is a whole different issue.
Here are some resources to find raw land for sale
Searching for Property on eBay
I know what you are thinking. eBay to buy a property? YES! You can buy property on eBay. Here is the deal though. Be sure to still do the same investigations on the property as you would if you were buying it elsewhere
Vacant Land Search on Zillow
I like Zillow a lot for a few reasons
* Easy to use interface
* You can sign up for alerts based on your search preferences
* It has an acreage filter
Searching for Property using LandWatch
Landwatch is another good tool. I like to start out with an initial basic search but what is great with them is that you can easily narrow by city, price, etc.
Finding Land For Sale By Owner On Craigslist
The great thing about Craigslist is that you can often find land for sale by owner. Craigslist is a great place to advertise.