It is just a safety net, mainly.

Recently, my tenants have expressed concerns of people hanging out in the front of their units, creating some uneasiness - to the point where they want to exit their lease for safety reasons.

They look for basic health and safety issues, and the Section 8 office has a phamphlet with their requirements. 

I tried calling the 311 # for the environmental hazard but nothing has been done yet.  

Hi Paul,Charlotte is considered a good market for house hacking due to its demographics, safety, and quality of life.

There are many buildings with systems reaching the end of their life - Galvanized hot water risers, leaking vent stacks, aging window systems, outdated elevator and fire safety equipment.

The tenant threatens to get lawyers, my concern is their safety, but I can’t get any justification to make improvements to the property for security.

Your Natural Hazards Disclosure should have some of this but it is tricky.I think if the equity is there and you can move the money to a better producing asset, I think I would sell.

A promissory note and deed of trust are important but there are also other disclosures and documents you should collect to help protect the loan - Lender's Title Policy in 2nd position behind the bank loan, Loss Payee on the hazard insurance policy binder behind the mortgage lender so your parents get reassurance they'd be paid back if there were any claims that need to be made.

Home inspectors look for safety.