Evergreen Sustainable Development Standard for Affordable Housing (Washington)

From Open Energy Information


Last modified on December 17, 2014.

Financial Incentive Program

Place Washington

Name Evergreen Sustainable Development Standard for Affordable Housing
Incentive Type Green Building Incentive
Applicable Sector Low-Income Residential
Eligible 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
Active Incentive Yes
Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs, Energy Efficiency Incentive Programs

Program Administrator Washington Department of Commerce
Website http://www.commerce.wa.gov/Programs/housing/TrustFund/Pages/EvergreenSustainableDevelopment.aspx

References DSIREDatabase of State Incentives for Renewables and Efficiency[1]


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 15 points for achieving greater points for energy efficiency under Washington State's Energy Code. 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.

Incentive Contact

Contact Name Dena Harris
Department Housing Trust Fund
Division Washington Department of Commerce
Address P.O. Box 42525
Address 2 1011 Plum St SE
Place Olympia, Washington
Zip/Postal Code 98504-2525
Phone (360) 725-2902

Email Dena.Harris@commerce.wa.gov
Website http://www.commerce.wa.gov

  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency" Cite error: Invalid <ref> tag; name "DSIRE" defined multiple times with different content