As part of the development of the 2012 edition of the National Green Building Standard (NGBS), and in accordance with the ANSI consensus process, a 45-day public comment period for the second draft of the standard will conclude June 11, 2012. The NAHB Research Center, an ANSI accredited standards developer, is serving as secretariat of the NGBS development process.

A PDF version of the second draft is available for download from Only those changes to the first draft that were approved by the Consensus Committee during its February 2012 meeting, shown in legislative format in the second draft, are open for public comment. All public comments are required to be submitted by the June 11th deadline on a Web-based form, also available at  

The Pre-Public Comments Report (PCR), which details all of the tentative committee actions on the comments on the first draft and other work of the committee, was released in late April. The final committee actions related to the second draft will be reported in the final PCR, which is scheduled to be released on June 29th, after the committee balloting process is complete.

Below are other key dates remaining in development of the 2012 NGBS:

Public comment period on second draft of the standard closes—June 11, 2012.

Circulation of ballot and public comments on second draft begins—June 15, 2012.

Circulation of ballot and public comments closes—June 25, 2012.

Public comments report released; appeals period begins—June 29, 2012.

Appeals period closes— July 28, 2012.

Appeals hearings held at the NAHB Research Center— Aug. 8–10, 2012.

Note that these dates are tentative and subject to change. Visit for the most recent information on the development process.

Initiated originally in 2007 by the International Code Council and the NAHB, the 2008 National Green Building Standard was developed by a 42-member Consensus Committee and approved by the ANSI in January 2009, making it the first point-based rating system for green residential construction, remodeling, and land development to be approved by the ANSI. As an ANSI-approved standard, the document is subject to periodic updates as a way to ensure that advances in building codes, technology, and other developments can be considered for incorporation.

For additional information and all future updates on the 2012 NGBS development process, visit Any questions regarding the public comment period or any part of the standards development process should be directed to