He was very nice, and even did some research on the topic.  

In most cases, neither is warranted.Warning: I am not an attorney, and this can be a complicated topic.

Are there any resources (books, etc) you recommend to learn more in depth about this topic?

I recognize this is far from the typical topic posted within BP circles and forgive me if I am barking up the wrong tree here.

Did a podcast interview with Highlands Mortgage about this very topic recently, contact info for the lender is below.

https://www.biggerpockets.com/forums/51/topics/1113749-cost-segregation-faq

It's refreshing to have an expert on a certain topic come on here and share how to do things. 

Here are a few:https://www.biggerpockets.com/forums/92/topics/189151-norada-real-estate https://www.biggerpockets.com/forums/311/topics/322300-norada-real-estate https://www.biggerpockets.com/forums/311/topics/433367-first-time-buying-turn-key-property-out-of-state-norada https://www.biggerpockets.com/forums/92/topics/496083-norada-real-estate-investments Also, feel free to contact our team of Investment Counselors for more specific recommendations.Continued success!

It's great to have you here.Here are some recommendations for you:Find and connect with other BP members that are in your area: http://www.biggerpockets.com/m...Set up keyword alerts to be notified of the topics that interest you: http://www.biggerpockets.com/a...Read Beginner’s Guide: http://www.biggerpockets.com/r...Check out BP Money Podcast: https://www.biggerpockets.com/..

., back to the original topic: what would your next step be?