Can I refuse to close after a bad walkthrough?

Refusing to close after a bad walkthrough is possible, but only if the contract gives you that right, typically tied to the seller failing to deliver the home in the agreed condition. Acting on that right without legal advice is risky, since walking away improperly can put your earnest money at stake. Brian Beatty loops in the closing attorney immediately when a walkthrough turns up a serious problem so the buyer's options are clear before any decision is made.