There are several properties for sale in these communities that might work, priced between $450,000 and $700,000. some are very cute, some need a lot of work. There are MANY buyers looking for the same kind of property so the best ones will have a lot of offers... one in Walnut Creek that still shows active had 24 offers in the one week it has been on the market... and they are reviewing the offers now. If purchasing is your preference you need to work with an agent that knows the market very well and more importantly knows how to counsel you for this kind of "auction style" negotiations.
Contact me if I can be of further help.
DRE # 350257