Harvard Joint Center for Housing Studies

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Concentration in the Homebuilding Industry: Trends, Strategies, and Prospects

Although still fragmented, the homebuilding industry has undergone changes in recent years that have increased the share of production by larger builders. The top 100 builders nationally now account for about half of all new single-family home sales, up from just over a third two decades ago. However, most of these gains reflect the growing market share of just two home construction companies – D.R. Horton and Lennar.

“The Rent Eats First”: Rental Housing Unaffordability in the United States

The United States is in a housing affordability crisis, with nearly half of all renter households spending more than 30% of their incomes on rent and utilities each month. Whereas housing policy has relied on percentage-of-income measures to indicate whether housing is affordable, researchers over the last three decades have called for a residual income approach that uses spending estimates to calculate what a household can actually afford. This article examines the extent of the affordability crisis by comparing standard cost burden rates for working-age renter households with residual-income cost burdens.


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