Thats a good question. The bay area has been touted as one of the most expensive places to live. However, there are some areas that are more affordable than others. Depending on where you work specifically, I would consider San Jose areas such as Blossom Valley, Willow Glen, and Midtown or even Downtown San Jose, and the Cambrian area.
Out side of San Jose there is Santa Clara and Cambpell. If you want to search properties in those areas feel free to veiw homes at:
Property Searches | Santa Clara Valley Living
If you have any questions give me a call.
Vinicius Brasil