Why do you need to walk through your soon to be new home right before closing? You think you have been inside this home enough already? You have made the offer and negotiated a deal. The lender is ready and all you need to do is go sign a bunch of papers, right? Wrong.
Walk throughs are very important. They are supposed to be done right before your closing so that you can make sure the home is in the same condition as when you made your offer. I can't tell you how many horror stories I have heard concerning walk throughs.
When I bought my first home I did not do a walk through. If I had, I would have known the Sellers had taken every light switch cover in the home with them. I have heard of broken water pipes pumping gallons of water into a home, only to be found when the new owners arrive fresh from a closing to their new waterlogged home.
Make sure you walk through your new home to be right before your closing. This is your last chance to catch a problem with the home before it becomes "Your" problem.