I'm sorry that your question hasn't received any answers yet. Unfortunately, West Covina doesn't have a lot of activity at the moment, but I can still help connect you with the right people.
I recommend that you get in touch with Adrian, a property manager at AMG Management based in West Covina. You can call him directly on (909) 685-4871 and tell him that you found him through Trulia Voices. He should be able to point you in the right direction.
Good luck with your search!
Community Manager, Trulia Voices