The U.S. housing market faces a challenge at the start of the spring sales season: higher prices.

It is hard to overstate the benefits of rising prices to the economy broadly and to homeowners, banks and home builders specifically after years of declines. Price gains have pulled more Americans from the brink of foreclosure and given home buyers more confidence that they won’t get stuck with an asset whose value will decline.

But those gains have a painful edge, too, especially because prices have bounced back so strongly. The increases have rekindled concerns about affordability, particularly for first-time buyers, and could damp the gains of a housing rebound still in its early stages.

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