The residential purchase agreement by default schedules a final walk through 5 days before the close of escrow. Since a final walk through is not required to complete the sale, it can be waived if the buyer chooses.
After conducting the final walkthrough the buyer will fill out the Verification of Property Condition (VP) form, that will note if the buyer was satisfied with the condition of the property, or will point out anything further that must be done prior to close. Make sure the property is in “Broom Swept” condition. If its dirty, you may ask to have the seller hire a cleaning company to clean it. I recommend doing your final walk through before you receive loan docs, that way if anything is wrong, you can hold off on signing them until its fixed.