Everyone once in a while the city inspectors nail someone and stop the jobs until an asbestos abatement company gives a clearance certification.

There is no training required and no certification process. 

Hello, I recently went to a rich dad poor dad conference and learned about tax lien certificates.

IMO, the NAHB (home builders) has been successful at blocking the advancement of modular techniques, it's political, many building regs offices won't allow them or require additional certifications and tougher inspections.

"Loans Secured by Financial AssetsWhen a borrower uses his or her financial assets—life insurance policies, 401(k) accounts, individual retirement accounts, certificates of deposit, stocks, bonds, etc.

Have your lawyer examine the lease, and if possible ask for an estoppel certificate to confirm that everything is actually at it appears.Frank

Do you have lien certificates in IL?

At the end of the one day class, they give a certificate of completion and a big take-home binder filled with a lot of great information. 

I have a certificate in real estate management, so if you could use me on the team let me know.

It sounds like you need to find out from the building department what the inspector actually meant, but if it's an issue critical to issuing a certificate of occupancy I don't see how you could get a renter in first.