This story was originally published in Builder.

43% of new homes built between 1990 and 2010 occupy Wildland-Urban Interface (WUI) areas
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Providence, Rhode Island, Detroit, Michigan and Hartford, Connecticut are the least disaster-prone metro areas in the country, according to Redfin. In a new report, Redfin rated the 50 biggest metro areas according to their relative frequency of five major types of natural disasters—earthquakes, fires, floods, tornadoes, and hurricanes—using a new metric called the "Natural Disaster Hazard Score."

Each of the five components is measured on a scale of one to 100, where 100 is the most hazardous metro area for the category and one is the least hazardous. The overall Natural Disaster Hazard Score is an average of the five components' frequencies.

Metros with low Natural Disaster Hazard Score ratings tend to have relatively affordable housing markets. Nine of the 10 least hazardous metro areas have median home prices below the $287,400 national median. Salt Lake City is the exception, ranking as the eighth-least hazard-prone metro area with a Natural Disaster Hazard Score of 16 and a median home price of $320,000.

Many of the most disaster-prone metros, including Washington, D.C. (52), Los Angeles (52) and New York (41), have home prices well above the national median. These three areas also tend to be near the top of Redfin's list of origins common among online home-searchers looking to relocate to more affordable, inland housing markets, like Las Vegas, which ranks fourth among the safest-rated metros.

"When you buy a home you are paying for more than just the house," said Redfin chief economist Daryl Fairweather. "There could be hidden costs associated with natural disasters. If a natural disaster strikes, you may have to pay for damage to your home or for the cost of evacuating your family. And even during times of calm, you may still need to pay for insurance against floods, fire, or earthquakes. Some homes in more hazardous areas might seem more affordable if you are just looking at the sticker price, but they may end up costing more when risks related to natural disasters are factored in."

In addition to high home prices in cities like Washington, D.C., Los Angeles and New York, the likelihood of natural disasters may be another factor driving home buyers away from the coasts. When hurricanes, fires, earthquakes and floods are factored into the equation, the affordable inland metros are even more attractive destinations.

This story was originally published in Builder.