New Construction Contract

[Drew Dim]

So I have a spec house under contract, in order for the buyer to qualify for the construction loan, he says the lender requires that he own the land. How can I draft it to where I'll sell the land but guarantee that he won't back out in regards to the build??? Can I add a contingency clause that I get the land back and he gets any $ back should for what ever reason he wants to back out? I don't feel as if he'll back out but want to legally cover all of my bases. Any advice would be greatly appreciated!