You probably won't get caught are famous last words for many people with red cards on their properties before listing it, closing it to flip and sell, or to turn into rentals.

So welcome to the "New-Norm"; NEO-Stagflation: Throttled HIGHER price, throttle higher inflation always on cusp of breaking out to run red-hot and verge of cooling but never going either, lower volume, tight labor.... 

In fact, the only time we ever had an animal do more damage than the deposit was on a set of tenants that had red flags but we accepted them anyway against our better judgement.

Too many red flags?  

I sent an email, but it came back as undeliverable.Is this a red flag, and should I move on to other applicants?

If total, then you'll be in the red.

Now, of course, every city and state is different, but that is a red flag that it may not even be a real notice?

Start by learning the real estate basics, study the market, set your goals, get a team of experts, make friends in the field, look into how to pay for it, begin small then grow, do deep checks, and go for it.

Foundation issues, fire damage, leaning walls, collapsed roofs, are massive red flags. 

(Yes I know there are other restrictions/conditions.)In the past, I have toyed with the idea of a vacation/rental property in Ocean City, MD, Rehoboth/Bethany/Dewy, DE, and/or the Deep Creek Lake, MD area (I like the idea of being within 3 hours of the rental property in case something goes horrible wrong and I need to travel to the property).