Work with a licensed Realtor.........look up the California Board of Realtors.........or ask around to some friends.......chances are in this market there is someone who knows someone else in your situation and friends might know of a good agent too.......
Please don't post links to companies that we have not had a chance to check out..............if you want to find out about the legitamacy of a company email it to me instead of posting it.......
