Did you use a buyer's rep on this deal? You are right, it is not fair. When dealing with a builder, they hold the power over pricing. Are the upgrades reflected in the sales price? In other words, has the sales price changed, or do you have to pay for the upgrades out of pocket. If the sales price has changed, you may have some leverage with the builder if your contract includes the house having to appraise. If you have to pay out of pocket and you walk away from the deal, you will lose the downpayment, any upgrades you paid for up front, and possibly a lawsuit from the builder (not likely but possible). If it was me, I would close on the house. Enjoy living in it and learn from this experience.