May 11--In 2003, seven national and regional homebuilders constructed a little less than half of all single-family homes in the Colorado Springs area.

Last year, the same companies' share of the Springs market slipped to less than a quarter of the area's new homes.

Today, one of those companies is building mostly townhomes. Another hasn't pulled any single-family building permits this year. A third apparently has halted local homebuilding.

As the Pikes Peak region's single-family-housing slump deepens, some national and regional builders have scaled back, shifted direction or closed up shop.