What you are describing is called a "fee tail" where there are restrictions placed on the deed e.g.,  only selling property to your family members.  Fee tails are unenforceable in California because it restricts the marketability and transferabilty of property.  You should not have any problems selling the property to a non-family member because  a fee-tail is uneforceable and your family members don't want the property either. I hope I answered your question.