Want to start Spec Build before closing??

[Account Closed]

I have a lot under contract that the seller can not sell until July 10. Seller bought the lot last summer before things picked up, and now realizes he can make a small gain by selling on long term capital gains. He currently has no mortgage on the property. Is there a legal way to structure this so that all three parties (buyer, seller, and lender) all are safe? I would like to start the build asap. Thanks.