What is a Home Energy Score?

A Home Energy Score is like a miles-per-gallon rating for homes to compare energy performance. Homes are scored on a scale from 1 through 10 with 10 indicating the most energy efficient homes. A Home Energy Score is an asset based score that helps buyers and sellers understand how a home uses energy based on physical characteristics including size, building envelope and energy systems. The Home Energy Report includes the Home Energy Score, estimated annual energy use and cost, and recommended energy efficiency improvements.

How is a Home Energy Assessment different from a comprehensive home energy audit?

A Home Energy Assessment differs from a comprehensive home energy audit in that it does not include blower door or duct testing, combustion safety testing, infrared camera scanning or a detailed analysis report. A Home Energy Assessment is an affordable method for understanding how a home uses energy and can be included in a comprehensive home energy audit.

What happens during a Home Energy Assessment?

The Home Energy Assessment is conducted by a qualified Home Energy Assessor and takes about an hour to complete. Enerstructa is a qualified assessor and collects information during a home walkthrough or from plans and a builder submission form. The information includes data about the home’s envelope as well as its heating, cooling and hot water systems. The assessor enters the data into an approved software tool to calculate the Home Energy Score. Utility bills and user dependent items like lighting, electronics and appliances are not included in the score calculation. Instead, the tool assumes standard operating conditions and average local weather to allow for an "apples to apples" comparison of homes.

What happens after a Home Energy Assessment?

The Home Energy Assessor generates the Home Energy Report that contains the Home Energy Score (see example below). The Home Energy Report must be included in the RMLS listing and other real-estate listings. Anyone can search for a Home Energy Report on the Green Building Registry and it must be made readily available to prospective buyers who visit the home.

Why is Portland requiring Home Energy Scores?

The City of Portland recognized that requiring Home Energy Scores is the best way to provide consumers with comparable and credible information about a home's energy use to better understand the full cost of owning a home. The requirement is also designed to motivate energy efficiency investments in homes that lower utility bills, reduce carbon emissions and increase comfort, health and safety for homeowners.

What does it cost to get a Home Energy Score?

Enerstructa charges a flat rate of $175 for pre-construction homes and $225 for existing homes. Please contact us to schedule.

*More information is available at www.pdxhes.com

 City of Portland Home Energy Score
 City of Portland Home Energy Score