Since its inception in 2005, the NGBS has steadily increased in popularity with home builders and buyers, alike. The 2008 edition was co-produced with the International Code Council (ICC), providing immediate recognition by the building code community. This valuable connection to the International Codes, provides consistency in terminology and fundamental requirements, so that builders can confidentially use the standard and not be concerned with non-compliance to the codes.
For the 2015 edition of the NGBS, NAHB has partnered with the energy expertise of ASHRAE. This new partnership will provide the rating system with a high-degree of specificity and rigor related to building energy performance. The NGBS is well positioned to retain its leadership position in residential green building standards. A strong partnership with organizations that can provide a complementary vision for content will continue to grow demand for dwellings that are NGBS compliant.
Four levels of achievement are available: bronze, silver, gold, and emerald.