Based upon data from the RESNET National Registry and US Census data, RESNET staff has completed an analysis of the penetration of HERS® Index Scores in states’ housing markets. The top ten states in terms of percentage of new completed single-family homes that were HERS® rated in 2018 are: The below map contains the percentage of new single-family homes HERS® rated in 2018: Source: Ryan Meres, RESNET The below map contains the average HERS® Index Score per state in 2018, with the lowest scores being in Maine, Vermont, and Hawaii. Source: Ryan Meres, RESNET
