Need? No. Highly encouraged? Definitely.
It’s always a great idea to be there, but it’s not critical. You can always discuss findings over the phone and your inspector will always be available for any questions later.
If you can’t be there for the whole thing, try to make it at the end. That’s the most important time because your inspector will go over the findings and have the answers to your questions. This should only take about 15 minutes.
