NAHB Rolls Out National Green Building Standard

NAHB Rolls Out National Green Building Standard

The National Association of Home Builders has established a National Green Building Standard covering single- and multifamily dwellings, residential developments and remodeling.

The NAHB developed the standard with the International Code Council.

The standard, which evolved from the NAHB guidelines for eco-friendly, single-family home construction, recently received approval from the American National Standards Institute and became the first assessment system of its kind for green homes to be ratified by the institute.

The standard will be used by the NAHB National Green Building Program, or NAHBGreen, and its certifying body, the NAHB Research Center. NAHBGreen also allows builders to have their projects scored based on the organization's NAHB Model Green Home Building Guidelines. However, the new ANSI-approved standard includes more mandatory elements and sets higher thresholds for achievement in several categories.

The new third-party rating and assessment system for environmentally friendly residential building provides certification at four levels based on a point system — like some of its rating counterparts for green commercial buildings.

The tiers for the National Green Building Standard are bronze, silver, gold and emerald. Within each rating level are minimum point thresholds for six green building categories: lot design, preparation and development; resource efficiency; energy efficiency; water efficiency; indoor environmental quality; and operation, maintenance and building owner education.