The classic one was Tenant leaving huge amounts of grease in kitchen, inspector requires landlord to clean it up.2) Tenant vacates the unit without notice early in the month.

FYI I did my due diligence and got a home inspector that was relatively OK.

The U.S. market can indeed be complex, especially when considering international factors like taxation and financing.While I'm not based in Germany, I do work with a number of out-of-state and international investors who are interested in the Indianapolis market, which offers strong returns and more approachable entry points compared to coastal U.S. cities.

Often times inspectors overlooked them as they are very small and minor but as you can probably already tell, they are extremely important and prevent water intrusion.Your best bet would be to contact a very reputable Siding/roofing contractor and have them go through the entire property and put in the proper drippage flashings seals and caulking necessary and have them insure the work. 

I'm a realtor in the Indianapolis market and work with new investors who look for duplexes and single-family homes with ADUs.

I specialize in BTR duplexes in Indianapolis, and I’ve found that local connections are invaluable when assessing markets, especially for long-term strategies.Learn from Real Deals: As you move forward, it’s helpful to analyze real deals, even if you’re not ready to buy yet.

The current owner wanted to do some work on the house and inspectors realized that an additional room had been added and he had to deal with it.

Most times, the due diligence period is used for you to bring out your inspector to physically test the property (environmental, structural, roof, etc.) 

I'm 24 and work primarily in the Indianapolis market, focusing on new build duplexes that offer great cash flow and low maintenance—perfect for someone looking to build a steady income stream and leave a legacy.Given your situation, investing in rental units could be a solid choice.

In places like Indianapolis, for example, we’re seeing significant interest in build-to-rent (BTR) projects that offer consistent cash flow and long-term appreciation.