If you are looking for a fixer upper for rent I take it your looking to fix it to save some money. Your best source for rentals is http://www.craigslist.com
The Carrabba Group
Keller Williams Hollywood Hills
Pomona has plenty of options to fit the need of those looking for that perfect piece of real estate, be it a purchase, lease or rental. I've been a resident here for almost two decades, so I've seen first-hand what's available for purchase and rent. We can provide you with more information to make your search easier.
Good luck in your search!