I’m a professional civil engineer with years of experience in construction and entrepreneurship.

Engage architect/civil engineering - If you are buying land to start development and not just land-banking, I'd engage with an architect immediately.

At this point regardless of price point a cost segregation should be a full engineered study through a reputable firm. 

Starting with an engineer firm will speed up the process.  

Hey Drew, get yourself an engineer to provide you with a report on the current conditions and the repairs needed.

I did get a licensed engineer's evaluation, he suggested that polyurethane foam injections would be a great solution and that failed miserably.  

I have moonlighted for several Architects and through hard work and good fortune stumbled on an opportunity to become an apprentice electrical engineer. 10 years later I am a senior engineer, together with my wife, have a decent portfolio of Real Estate.

However, I’m pretty sure obtaining a degree in engineering is pretty useful for someone who is an engineer and having a degree in accounting and passing the CPA exam would be useful for someone in a career in public accounting. 

An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provide support for the property tax appeals process.

I reached out to Stessa, and they told me the engineers are looking at it but have no timeline for resolving it.