Methodology
To determine the cities where green homes sell at a premium, 24/7 Wall St. reviewed the report “The solar effect” from customer review company ConsumerAffairs. The company reviewed Redfin data on home sales to rank cities by the percentage difference in average home sale price of green homes — homes with LEED or Energy Star certification, solar panels, or other green features and appliances — and the average home sale price for all homes.
ConsumerAffairs’ sale price data is based on a survey of 1,000 homeowners conducted by real estate brokerage Redfin in 2022. Supplemental data on the average daily hours of full sun — defined as periods in which the intensity of sunlight exceeds 1,000 watts per square meter — is based on data from the Centers for Disease Control and Prevention’s North America Land Data Assimilation System and are for the years 1979 to 2011.
