I'd go to both places and sign up as a potential buyer down the line. Let them know your intentions. It's good to be pro-active, that way if an owner chats with them about wanting to rent, they can have your business card handy. Plus they'll want to email you (they have lists) special offers for when you are ready to buy.
Investment/Schools and Education Specialist
There is Trails Pub on N 1st St. that a lot of nearby residents in downtown walk to and hang out at. I'm not suggesting you go there to drink but just socialize with the folks. San Pedro St. is a block away so you'll probably meet someone there who knows someone.
SJ Downtown Resident
What you need to do is look in rental area of trulia and on craigs list if they have units available to rent you'll be able to find them there. Also google it and see what comes up.
At your service,
I suspect that you could probably buy sooner than you think.
I recommend that you talk to some lenders now about the possibilities of FHA financing with a low down payment now rather than wait a year.
Interest rates and real estate prices could go up over the next year and make your purchase much more expensive for you than your purchase would be now.
Also, the interest on your martgage is tax deductible, but the amount that you pay in rent is not tax deductible.
You will be money ahead if you go ahead with your purchase now rather than wait a year.