We looked at one of the Michael Crews Homes in Escondido and they were willing to take a trade-in. They would give you fair market value minus what it would take them to fix up the property for them to sell. They said it would have to work out for them to take a trade-in.
Shea Homes has a Real Estate Team that can help you sell your home. They would waive the their realtor comission if you were to buy one of their homes.