If you've already had a seller inspection, there should be few surprises. But sometimes the seller inspector misses something, or a new problem arises during the interim.
If an inspection turns up problems, the buyer may see this is an opportunity to renegotiate the sales contract. Instead of going back to the drawing board, you can fix the problem or give a cash credit to the buyer at closing.
Depending on your state and municipality, your home may need to pass certain inspections -- smoke detectors, for example -- before you close. Contact your city or village hall before closing.