BETHESDA, MD -- An updated ranking of the environmental and sustainable practices of the United States' 10 largest publicly traded homebuilders will be released at 1:30 p.m. EST on December 7, 2010 in a major new report from the investment firm Calvert, one of the nation's leaders in the field of sustainable and responsible investing.

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.

News event speakers will be:

* Stu Dalheim, director, Shareholder Advocacy, Calvert;

* Report co-author Rebecca Henson, analyst, Sustainability Research, Calvert; and

* Jeffrey T. Mezger, president, CEO and board director, KB Home.

As an investor, Calvert seeks to discern how major U.S. homebuilders compare on policies, programs, and performance relating to the environment and resource efficiency. Calvert's 2010 Green Homebuilders Survey examines the 10 largest publicly traded US homebuilders on the basis of five "green" indicators: land, building materials, energy, water and climate change.

TO PARTICIPATE: You can join this live, phone-based national news conference (with full, two-way Q&A) at 1:30 p.m. EST on Tuesday, December 7, 2010 by dialing 1 (800) 860-2442. Ask for the "Calvert Green Homebuilder Rankings" news event.

CAN'T PARTICIPATE?: A streaming audio replay of this news event will be available on the Web at http://www.calvert.com as of 6 p.m. EST on December 7, 2010.

ABOUT CALVERT

A leader in Sustainable and Responsible Investments (SRI), Calvert Investments offers investors among the widest choice of SRI strategies of any investment management company in the United States. Each SRI strategy employs one of three proprietary approaches. Calvert SignatureTM Strategies integrate two distinct research frameworks: a rigorous review of financial performance plus a thorough assessment of environmental, social, and governance performance. Only when a company meets Calvert standards for both frameworks will we consider investing. Calvert SolutionTM Strategies selectively invest in companies that produce products and services designed to solve some of today's most pressing sustainability challenges. Calvert SAGETM Strategies emphasize strategic engagement to advance environmental, social, and governance performance in companies that may not meet Calvert standards today, but have the potential to improve.

Calvert mutual funds are underwritten and distributed by Calvert Distributors, Inc., member FINRA and a subsidiary of Calvert Group, Ltd.

SOURCE: Calvert

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