As far as websites for looking for rentals in Ingleside Heights, San Francisco I personally like StreetAdvisor.com--its got a lot of good information about what's going on in the city written by locals who actually know what they're talking about and have often done a bit of research to back themselves up too. You might have heard of it.
Other than that though, I like Padmapper for looking up rental prices; because it is a website aggregator it gives you a pretty comprehensive sense of what is out there at any given time.
For home prices, I like Trulia--another agregator with lots of extra goodies.
Hope that helps.