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Evergreen Sustainable Development Standard for Affordable Housing

Last Review: 2012-06-28
Incentive Type: Green Building Incentive
Eligible Efficiency Technologies: Clothes Washers/Dryers, Dishwasher, Refrigerators, Water Heaters, Lighting, Furnaces, Boilers, Heat pumps, Central Air conditioners, Caulking/Weather-stripping, Duct/Air sealing, Building Insulation, Comprehensive Measures/Whole Building, Solar Water Heat, Photovoltaics
Applicable Sectors: Low-Income Residential
Website: http://www.commerce.wa.gov/Programs/housing/TrustFund/Pages/EvergreenSustainableDevelopment.aspx


The Washington State Department of Commerce created the Evergreen Sustainable Development Standard, a set of green building criteria that is required for any affordable housing project applying for state funds through the Washington State Housing Trust Fund (HTF) beginning in July 2008. The standard is based on a point system which awards points for a variety of sustainable building practices including:

  • Site location and neighborhood planning;
  • Water conservation;
  • Energy efficiency and the incorporation of renewable energy technologies; and
  • Environmentally-conscious construction practices, building materials and improved indoor-air quality.

New construction projects must comply with all mandatory measures and earn a minimum of 50 points from the optional measures and rehabilitation projects must earn 40 points from the optional measures. Most optional measures are worth 5 points, but can range from 1 point for designing a building solar-ready to 17 points for reducing the energy used for space conditioning by 50% when compared to the 2009 IECC building standard. Installing a solar photovoltaic system can earn up to 5 points. Solar water heaters that meet certain design criteria and provide 50% of the total water heating needs of a house can earn 10 points.

In addition to these optional measures, there are a variety of mandatory measures and equipment requirements which have to be met. The mandatory elements span the range of sustainable building categories and the program guidelines provide full details. Affordable housing projects constructed without state funds do not need to comply with this code, but any project that receives funding must comply with the Evergreen Standard as of July 1, 2008.

Dena Harris
Housing Trust Fund
P.O. Box 42525
1011 Plum St SE
Olympia, WA 98504-2525
Phone:(360) 725-2902 Ext.
Phone 2:()
Email: Dena.Harris@commerce.wa.gov
Web site: http://www.commerce.wa.gov


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