As members of the HERS Rating community, we are very excited about the recent study conducted by Freddie Mac determining that homes rated under RESNET’s Home Energy Rating System (HERS) between 2013 and 2017 sold for an average of 2.7% more than comparable unrated homes.
Using a national random sample, the property value analysis found that better-rated homes are sold for 3 – 5% more than lesser-rated homes. In this case the “better” rating means a higher energy efficiency rating. It’s unclear from the study if this means a home with an average HERS rating, such as HERS 55 in the Northeast, could be valued at 2.7% more than the unrated home. And perhaps one approaching Zero Energy, such as HERS 10, could be valued at 5% more than the lower-rated home. I could be doing some very creative math here, but doesn’t that imply that the better rated home might just be valued about 7.7% more than the unrated home?