UPDATE:

A Simpsons fanatic made a real house which looks exactly like the house from the cartoon. Located in Henderson, Nevada.Apparently, the house wasn't built by a Simpsons fan. The $120,000 house was constructed for use as the grand prize in a contest sponsored by Pepsi, Fox, and the homebuilder. The contest was known as "The Simpsons House Give Away".Thanx for the heads up Andy!