Affordable housing has become a chronic problem in America's capital, where nearly a third of the homes sold last year cost $500,000 or more, an article in The Washington Post claims.

According to the National Low Income Housing Coalition, a person in the Washington D.C. area has to earn $56,480 a year to afford the average monthly rent of $1,412.

The city's Mayor Vincent Gray set aside $100 million for affordable housing this year. He also set up a task force to create and preserve 10,000 affordable units by 2020.