BETHESDA, MD -- An updated ranking of the environmental and sustainable practices of the United States' 10 largest publicly traded homebuilders was released on December 7, in a major new report from the investment firm Calvert, which is involved in sustainable and responsible investments.

In alphabetical order, the 10 homebuilders ranked in Calvert's "2010 green homebuilder" survey are: DR Horton, KB Home, Lennar, MDC Holdings, Meritage Homes, NVR, Pulte Homes, Ryland Group, Standard Pacific, and Toll Brothers.

Among other things, the impact of the recession is gauged in the Calvert report as a factor in showing how the top U.S. homebuilders have held, gained or lost ground in the rankings. The 2010 report updates Calvert's first "green homebuilder" survey, which was issued in 2008.

Read Calvert's press release here.

Have something to say? Share your thoughts with us in the comments below.