Hello Roberta. That's a very good question. The answer to your question depends on which foreclosure procedure the banks have to follow. In CA, we see mostly non-judicial foreclosures which are faster than the judicial foreclosures because the banks don't have to file a lawsuit. I have heard that the cost can run anywhere from $30,000 - $50,000 in CA. The reality is probably closer to the higher #. That # does not take any post-foreclosure cost into consideration. Repairing damages to the house and cost of evictions is extra.