The National Green Building Standard is the only green rating system for homes and apartments developed by the American National Standards Institute (ANSI). To achieve this certification, third party verifiers ensure that the following six components are in place at every site and for each home.
- Site design, lot preparation and development
- Resource efficiency
- Energy efficiency
- Water efficiency
- Indoor air quality
- Operation, maintenance & home owner education
The NGBS certification can be achieved at the Bronze, Silver, Gold and Emerald levels
LEED is an internationally recognized certification program that requires third party verification for buildings or neighborhoods. While LEED can be applied to homes, it is more often applied to commercial buildings. LEED has three certification levels: Silver, Gold and Platinum.
Energy Star is a series of checklists and inspections, testing and verifications developed by the U.S. Environmental Protection Agency (EPA). Homes with the energy star label deliver better quality, comfort and durability compared to a typical, code-built, home.
ecoSelect is a national program whereby the standards can be measured to show improved energy efficiency. The ecoSelect program provides a basis for reducing a home’s energy use while incorporating indoor air quality and water efficiency requirements.
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HERS Index (Home Energy Rating System) is the Nationally recognized system for showing a home’s energy performance. The third-party certification programs listed above look beyond energy efficiency while the HERS Index is solely focused on being able to compare the energy efficiency of one home to another. The rating system is based on a rigorous inspection and testing by a certified home energy rater. Having a HERS Score for a green home does help you to put its energy efficiency in context.