You can also work directly with a REALTOR who can search the MLS for rental listings fitting your criteria. Houses in the areas you are desiring start at an average of $2500 per month and up. As you get closer to the coast the prices will increase.
Marcie Sands, REALTOR
Simply The Best Real Estate Co., Inc.
Craigslist is popular, but beware that there have been reports of a lot of scammers on Craigslist these days. I've received calls from several people who have had bad experiences. One lady gave her deposit to someone and moved into the rental... then the REAL owners came home! So be careful.
You can also contact a San Diego real estate agent to send you the homes that are listed for rent on the San Diego MLS. Only a handful of the rental pool is listed on the MLS, but these homes tend to be in above-average condition.
Raschel A. Kloos, Realtor
Hope this helps,
Dee Marie Fisher