Zillow Says Rising Sea Levels Threaten to Put 2 Million Homes Underwater

Sea level expected to rise six feet by 2100 endangering 2% of housing stock 

By Jeff Sorg, OnlineEd Blog

canstockphoto14640424 house floating(August 3, 2016) – Nearly 2 million U.S. homes would be lost if the oceans rise by six feet as scientists expect by the year 2100, according to a new Zillow® analysis. The endangered homes represent just under two percent of the national housing stock, and are worth a cumulative $882 billion.

New research published in the scientific journal Nature found that sea levels could rise six feet by the year 2100, mostly due to melting Antarctic ice sheets. This new estimate nearly doubles previous expectations for rising oceans.

Using data from the National Oceanic and Atmospheric Administration, Zillow identified which homes would be affected by the predicted six-foot rise in ocean levels.

More than half of all homes that would be lost are in Florida, and they account for nearly half of the lost housing value as well. In all, one in eight Florida homes would be lost. More than 9 percent of homes in Hawaii would be underwater; 81 percent of those are in the capital city of Honolulu. Thirty-six coastal cities would be entirely underwater, and nearly 300 cities would lose at least half their homes.

The at-risk homes along the waterfront are 58 percent more valuable than the average U.S. home. The biggest difference in home values is in Maine, where homes at the water’s edge are worth $436,798, more than three times the statewide median home value of $138,900. By contrast, homes at risk of rising oceans are less valuable than the typical home in Hawaii, Maryland, Washington, and Oregon.

“As we move through this century, homeowners will have to consider another factor when it comes to their homes – whether rising sea levels have any impact on them,” said Zillow Chief Economist Dr. Svenja Gudell. “It’s easy to think about how the ocean levels can affect the coasts in an abstract sense, but this analysis shows the real impact it will have on nearly two million homeowners – and most likely more by the time we reach 2100 – who could lose their homes.”

Among coastal states, Pennsylvania, Oregon and California have the lowest share of homes at risk of being underwater. Just 0.1 percent of homes in Pennsylvania would be lost if the ocean level rises six feet.

State  Number of Homes at Risk of Being Underwater Percent of Homes at Risk of Being Underwater  Total Value of Homes at Risk of Being Underwater  Median Value of Home at Risk of Being Underwater
United States 1,867,801 1.9%  $882 billion $296,296
California 42,353 0.4%  $49.2 billion $891,269
Texas 46,804 0.6%  $12 billion $195,029
New York 96,708 2.1%  $71 billion $495,712
Florida 934,411 12.6%  $412.6 billion $262,626
Pennsylvania 2,661 0.1%  $730 million $188,505
Georgia 24,379 0.7%  $10.2 billion $291,409
North Carolina 57,259 1.6%  $20.6 billion $266,693
New Jersey 190,429 7.3%  $93.1 billion $365,233
Virginia 46,287 1.8%  $14.4 billion $252,985
Washington 31,235 1.3%  $13.8 billion $291,965
Massachusetts 62,069 3.1%  $51.2 billion $551,866
Maryland 64,299 3.1%  $19.6 billion $233,937
Alabama 12,735 0.8%  $3.8 billion $234,987
South Carolina 83,833 4.4%  $45 billion $369,047
Louisiana 80,080 5.9%  $13.2 billion $139,042
Oregon 4,959 0.4%  $1 billion $179,424
Connecticut 18,173 1.6%  $13.2 billion $414,616
Mississippi 5,572 0.7%  $1 billion $148,161
Hawaii 37,556 9.1%  $25.3 billion $475,345
Maine 5,412 1.0%  $3.1 billion $436,798
New Hampshire 4,064 0.7%  $1.7 billion $337,320
Rhode Island 4,853 1.5%  $2.9 billion $454,559
Delaware 11,670 3.1%  $3.6 billion $261,802

Source: Zillow



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About Jeff Sorg

Jeff Sorg is a co-founder of OnlineEd®, an online real estate, mortgage broker, and vocational school founded in 1997, where he also serves as Chief Executive Officer, and School Director. Sorg holds vocational and post-secondary school instructor licenses in several states and has authored numerous real estate continuing education and pre-licensing courses and has been awarded the International Distance Education Certification Center's CDEi Designation for distance education. Memberships include ARELLO (Association of Real Estate License Law Officials), the National Association of REALTORS®, Oregon Association of REALTORS®, and Portland Metro Association of REALTORS®. Awards and service include REALTOR® Emeritus in the National Association, Life Member award in Portland Metro Association and Chairperson of the Oregon Real Estate Forms Committee. OnlineEd® provides real estate, mortgage broker, insurance, and contractor pre-license, post-license, continuing education, career enhancement, and professional development and designation courses over the Internet.