The issue is that auditors will doubt it because of the rehab work and the short-term hold. 

Was this a federal IRS audit or state of Illinois?

Auditors fully depreciate our work trucks on a 7 year schedule, yet the trucks can easily be sold for $10-15k at the end of 7 years.

They do have to reveal the true sales price to the county auditor and tax assessor.

Contact the local auditor's office and get a list of properties that are behind on taxes.

Is it audited, who is the auditor (if the auditor is working on crypto project too, run away LOL). 

Then when we sell, we are getting a commercial property auditor to evaluate the property and sell it as a business.

Most auditors prefer it (except if you get a real oldie).

I am also interested in a property and am told by the "owner" on the auditor's website [which is US BANK TRUST NA (AS TRUSTEE FOR LSF9 MASTER PARTICIPATION TRUST)] that the account is owned by Caliber Home Loans.

Somewhere on their web site I ran across guidelines for auditors looking at real estate investors.