Someone comes in and uses lead roof materials, electrical conduits, a tank lining, soft solder, orparts from China all which have lead in remodeling after the certification...I know lead is dangerous for children.

Mitigating and planning for that risk is important, both to protect yourself and your personal assets, and to protect your business assets.

Then a few blocks away, you could be in a quite dangerous area.Utilizing a hyper local and knowledgeable Realtor is key (one that TRULY knows rental property real estate and not one who will just keep pushing their "product" just to make sales).I have been investing in the Cincinnati market for well over a decade now and also own/operate one of the bigger property management companies in the area with 170+ clients across nearly 400 units. 

I do have some thoughts about how we can mitigate this problem.

Calculate your downside risk and understand or mitigate it. 

The benefits for an arbitrager are significant mitigation of performance risk, and significant empowerment to scale. 

Assuming a standard lease agreement, and no particular tenant friendly legislative dictation, you can legally enforce the lease, but you need to make an effort to “mitigate” the loss by trying to release (in most jurisdictions). 

He's Still Paying the Mortgage on His Ex-Girlfriend's $350K House—And Has Zero Legal RightsA viral financial horror story exposes the dangerous pitfalls of buying property with an unmarried partner—and why legal protections matter more than romantic trust.A recent YouTube short from financial content creator Caleb Hammer has sparked widespread discussion about one of the most costly mistakes young couples can make: buying a home together without proper legal protections.The story, which has resonated with thousands of viewers, centers on an unmarried man who contributed to purchasing a $350,000 house with his girlfriend, only to discover he had zero legal ownership when their relationship ended just months later.https://news.yahoo.com/news/finance/news/hes-still-paying-mo...When Reality Hit HardThe relationship deteriorated rapidly after the home purchase, with the couple breaking up after living together for only a couple of months.

. :-) they are crooks and this is he danger of sub to  .. 

Strategies to Mitigate Vacancy Risks:Targeting High-Demand Areas: Focus on submarkets with low vacancy rates and strong rental demand.