Honestly, it is still Craigslist. Although, you may want to also try the small local market on San Geronimo Valley Road in Woodacre. I think I have seen postings on a public bulletin board there.. The store is located behind the Horse Stables that is on Sir Francis Drake. San Geronimo is the first left just as you are coming down Whites Hill from Fairfax. Also, there is a Melissa Bradley Real Estate Office not far from the grocery store, you might want to try there as well. Sometimes local offices will know of rentals coming on the market soon.