Homebuyers educated in green are tuned into a few key words, such as LEED and Energy Star, but until now, they haven't had many options to use those words to search for third party-rated homes.

Portland, Ore.-based Realty Trust Group has filled this gap with an online database of all homes in the Regional Multiple Listing Service System (RMLS) with the ability to narrow searches down to properties certified under LEED, Earth Advantage, or Energy Star.

"Builders are very supportive of our initiative because it allows their homes to be differentiated as it relates to their green building practices," says Realty Trust Group partner Todd Prendergast. "Likewise, Portland is recognized as one of the greenest cities in the country, and as we see sustainability evolving more into the mainstream, we know this is a tool that the consumer will find beneficial."

Committed to simplifying sustainability for their clients, Realty Trust Group says it looks forward to providing a listing of existing remodeled single-family homes as the certification entities tailor specific programs.

For a green home search in the Portland area, visit www.realtytrust.com.