Educating and empowering builders, women and youth through construction trade skill development.


diy workshops

We offer youth and adult DIY Building Workshops in partnership with Tum-A-Lum Lumber in Hood River & Pendleton, OR as well as Gorge MakerSpace in White Salmon, WA. We are also available for private workshops at your location. Contact us to learn more.


EPS, Blower Door Testing & energy modeling

We provide Energy Performance Scores for new homes as an Energy Trust of Oregon Trade Ally Contractor. We offer blower door testing as required for new homes in Washington as well as energy modeling for new and existing homes.

Home energy scores

We are licensed and authorized to provide City of Portland Home Energy Scores. We specialize in pre-construction assessments.

Empowering the Community through Building Workshops

Enerstructa offers DIY building workshops for kids in partnership with Tum-A-Lum Lumber in Hood River & Pendleton, OR. The workshops are held on the last weekend of the month and topics have ranged from tool boxes to bird houses to block lamps. Look for our latest workshop events and recaps on our blog. We offer women's DIY building workshops though Hood River Community Ed and in partnership with Gorge MakerSpace in White Salmon, WA. We also offer private workshop parties for birthdays, workgroups and events at your location which you can schedule by contacting us.

Tum-A-Lum Lumber Workshop

Use EPS to find a home that’s built to perform

Brought to you by Energy Trust of Oregon, EPS is an energy performance score that helps smart homebuyers find homes that offer superior efficiency, comfort and savings. EPS lets you look behind the walls to see the true energy impact of a home. It reveals the estimated energy costs, the environmental impact, and it highlights specific energy-efficient features.

To earn a score, homes are third-party tested to be at least 10 percent above code with energy-saving solutions such as high-performance insulation, tight construction and efficient heating and cooling. EPS is compatible with other widely recognized energy ratings, and stands as a true symbol of top-quality construction. 

Enerstructa is a third-party verifier for EPS homes in the Columbia River Gorge. EPS is similar to a Home Energy Score but includes a deeper analysis of a home's energy consumption, utility costs and carbon footprint through energy modeling. As part of EPS, we perform blower door testing which measures air tightness. We also test duct systems in unconditioned spaces to ensure they are well sealed and insulated. We work with contractors throughout the design and construction process to support new cost effective ways to increase the efficiency of the homes they build. Contractors receive utility funded incentives based on the tier of increased energy efficiency. We are certified by the Building Performance Institute as a Building Analyst and Envelope Professional, a certified RESNET HERS Rater and an Energy Trust of Oregon Trade Ally Contractor.

Talk to us about our EPS home verifications, or visit to learn more.

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

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

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