Housing construction was depressed to such a low level for so long that it wasn’t going to take much to show gains.  What it needed was for demand to recover. Now, with consumer confidence rising and mortgage rates falling to their lowest levels on record, buyers are coming back.

 

It began earlier this year as investors scooped up properties at big discounts that they could rent at a profit—often buying homes out of foreclosure before they were taken back by banks.

 

Now, builders are benefitting from sharp declines in the share of foreclosed properties. Just 14% of local home sales in September were foreclosures, the lowest in more than five years and down from nearly 50% as recently as February 2011.

Many traditional sellers are underwater—they owe more than their homes are worth—or aren’t willing to list their homes at prices that are down sharply from five years ago.

 

That’s putting home buyers in a bind. “People are running out of options,” says Veronica Roberson, vice president of sales and marketing at home builder Taylor Morrison. “We’re down to less than a month of supply, so buyers are coming to new homes pretty urgently.”

 

At Taylor Morrison’s Sorrento East community in Dublin, Calif., where homes are priced from the mid-$600,000 range, sales have been running at a rate of five to six homes a month—more than double what was selling one year ago.

Even if sellers dither, builders won’t. Nationally, builders started construction on more units during September than any time in the past four years, after adjusting for seasonal factors, the Commerce Department said Wednesday. Single-family construction was up by 43% from last year’s anemic levels.

 

Gains in construction should lift the economy. Glenn Kelman, chief executive of real-estate brokerage Redfin, writes in an op-ed at quartz that builders have been completing “half-built projects” with “skeleton crews” for much of the past year. That hasn’t done too much for job growth. “It takes fewer cooks to prepare leftovers for dinner,” he writes.

But as more new projects get underway, that will change. Perhaps 2013 will be the year that housing really helps the economy accelerate.