I purchased two last year that simultaneously had water explosions in the same month.

My rentals have policies that have one premium for "Fire and Lightning" then another for "Sudden and accidental damage from smoke, windstorm, hurricane, hail, explosion aircraft and vehicles, riot and civil commotion."

@Kyle Sutton,With the way phone numbers have gone since the cellphone explosion and telco breakups, area codes aren't very meaningful anymore as a locator.Even landlines in Puerto Rico can, for example, have a "Seattle" area code.I wouldn't be too concerned.

I will post the building explosion episode here too because there is alot to learn about being an organized Landlord before something goes wrong. https://www.straightupchicagoinvestor.com/podcast/episode-26...

Following this advice will help you to avoid explosions in your real estate investment aspirations.One final point, Ford Motor Company knew about the exploding gas tanks, but decided not to fix them because they wanted to save the $11.

An investigation revealed that the application of math without understanding how this extrapolated in the control system, significant errors were produced, that these errors were received and transmitted to the trigger creating an early explosion before reaching target.

Some markets appear to be over heated:Home-Flippers Reliance On Leverage Rises To Highest Level In 9 Years Jun 8, 2017 11:15 PM“Home flippers financed an estimated $3.5 billion in purchases for homes flipped during the quarter, up from $3.3 billion in the previous quarter and up from $2.4 billion a year ago to the highest level since the fourth quarter of 2007 — a more than nine-year high.”The explosion in home valuations in urban markets like Brooklyn, Washington D.C. and San Francisco has inspired real-estate speculators to search for the next big score, with the highest percentage of home flips completed with the aid of outside financing occurring in Colorado Springs, Colorado (69.3 percent); Denver, Colorado (54.8 percent); Seattle, Washington (51.6 percent); Boston, Massachusetts (51.3 percent); and Providence, Rhode Island (47.3 percent).Matthew Gardner, chief economist at Windermere Real Estate noted that escalating home prices in Seattle forced flippers to rely on financing their purchases.

I operate out of Nashville, TN and I'm able to provide clarity to my clients due to our continued explosive growth, job increases, and built in residence due to the large number of varied and successful businesses here. 

When you layer that with more demand than supply you see the price explosion  we have had for the past 3-4 years.

What areas have you found in the last 2 years that are having an explosion of rents do to growth and lack of supply ?