Consider hiring a home inspector to accompany you, and your agent, to your final new home inspection with the builder. Another set of trained eyes on your home's basic systems and structural integrity might be worth the expense if defects are discovered upfront. An experienced home inspector is trained to notice details that you might not have noticed yourself until later on.

Schedule your walk through for a time when you have a few hours to spend.
Don’t let the builder rush you through, when scheduling be sure you have told
them you will need at least 2 hours. Don’t bring the kids, family, friends, pets,
or other distractions with you. On the other hand you will want to bring:

• a package of bright colored stickers (that you can write on) and marker
• a flashlight and level
• a hair dryer and camera
• the attached Walk-Through Checklist and Deficiency List
• a clipboard and pen
• binoculars (to inspect the roof from the ground)

https://johnmacdonaldarchitect.files.wordpress.com/2011/01/walk-through-package1.pdf

Let me preface this by saying I specialize in buyers who purchase new construction because I was the top rep for several national builders and I know all the tips. The biggest misconception customers have when buying new construction is that you DON'T NEED TO HIRE A HOME INSPECTOR ---FALSE!!! Please hire a home inspector. Humans built your home and they are fallible. This is the biggest investment of your life, most likely, treat it as such. A good home inspection is roughly $500 dollars depending on the size of the home and where you live. It will generate a very thorough report, if you get a great recommendation on a seasoned inspector. Do your due diligence on this. As for the walk through, there are so many rules now when it comes to walk throughs. Bring who is on the contract and your agent. Take your time and inspect everything. READ THIS CAREFULLY. MAKE A LIST AND PUT EVERYTHING ON IT. There are many project managers who will verbally promise to fix things because the less items on a list the better. PUT IT ON THE LIST. Per my blog "If it's not in writing, it didn't happen." You should have two walk throughs. So the first one is for making the list and the second is for ensuring that everything that was put on the first list was corrected. Now according to most builder contracts, you have to settle on the home, unless there is some glaring deficiency that renders the house unable to be occupied or compromises the integrity of the structure. So if they missed a few paint touch ups, your are going to closing, just please make sure it is noted and documented. Good luck. Buying New Home Construction