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Published Reports

Codes Analysis Study Image

Energy Code Cost Analysis Study

December 2, 2016

Cost Analysis of Potential
Energy Code Improvements

Download the full report (PDF - 9.5 MB) »

Home Valuation Study

October 2015

The Market Valuation of Energy Efficient and
Green Certified Northwest Homes.​ With support from the Northwest Energy Efficiency Alliance.

Download the full report (PDF - 30.5 MB) »
Download the Appraiser Reference Sheet (PDF - 11.6 MB) >>

Northwest Building Best Practices Guides

July 2015

Three printable posters that provide builders with detailed information on mini-split technology, thermal enclosures, and HRV system best practices. Download the individual posters using the links below:

HRV Best Practices for NW >>
Thermal Enclosure: Efficient Walls & Airtightness >>
Mini-split Technology in New Construction >>

High Performance Appraisal Addendum

November 2014

A high performance home data cost addendum for builders and contractors to provide detailed high performance improvements to professional appraisers and real estate professionals.

 Download PDF (245 KB) »

Residential Development & Green Certification: A Case Study

October 2014

A case study highlighting the financial benefits to green and high performance fully certified communities.

Download PDF (200 KB) »

Accessory Dwelling Unit Financing Guide

October 2014

A snapshot of the ADU financing options available in the Portland, Oregon metro area during the fall of 2014.

Download PDF (200 KB) »

Home Energy Labels
A Policy Playbook

July 2014

As part of a Bullitt Foundation-initiated project aimed at developing technical, administrative, and marketing best practices in residential energy labeling and disclosure, a project team led by Earth Advantage conducted dozens of interviews and roundtable sessions with key industry stakeholders in the home building, real estate, lending and appraising, home performance contracting, and remodeling industries in Oregon and Washington.

Download PDF (300 KB) »

A Practitioner's Guide to Appraising ADUs

May 2014

Additional Dwelling Units (ADUs) are an emerging type of residential development with unique legal uses. This short guide outlines the best practices to follow when valuing a property with an ADU.

Download PDF (300 KB) »

Energy Ratings on Property Tax Records
A Policy Analysis

Februrary 2014

One pathway for making home energy ratings more visible to the real estate market is to include them as part of official government property records, such as on property tax records. Washington State University Energy Program and Earth Advantage sought to investigate the process, means, and barriers to recording energy ratings in property tax records. Research focused on Kitsap County, WA, but drew information from a wide array of jurisdictions. Therefore the general principles drawn from this inquiry can be applied broadly.

Download PDF (188 KB) »

Cost Premiums for Select High Performance
Building Components

Februrary 2014

Between August 1 and September 6, 2013, Earth Advantage contacted 53 builders in Oregon and SW Washington by email and phone to request the confidential access to cost data for select high performance buildings features.

Download PDF (245 KB) »

Regional Energy Rating & Disclosure
for Pacific Northwest Homes

April 2013

The assessment is an introduction to this policy topic and the first step in a multi-stage project to support a regional framework for residential energy ratings and disclosure policies. As part of a broader project funded by the Bullitt Foundation, Northwest Energy Efficiency Alliance, and Washington State University Energy Program, EA is working to support the widespread adoption of residential energy benchmarking and disclosure policies and programs. 

Download PDF (5.9 MB) »

Behavioral Perspectives on Home Energy Audits

July 2012

In this report, we present the results of a study for the U.S. Department of Energy, applied to an existing home energy audit program and pilot offered by Seattle City Light, the electric utility for the City of Seattle. Portland State University, Research Into Action, and Earth Advantage Institute worked together with Seattle City Light and the Lawrence Berkeley National Laboratory to complete the research project.

Download PDF (10.8 MB) »

A Life Cycle Approach to Prioritizing Methods of
Preventing Waste from the Residential Construction
Sector in the State of Oregon

September 2010

The purpose of this project was to evaluate the environmental benefits of potential actions aimed at reducing material use and preventing waste during the design, construction, maintenance, and demolition of residential buildings within the state of Oregon.

Download PDF (4.5 MB) »

Framework for Residential Energy Labeling

May 2010

This white paper was the product of an exercise to reach consensus amongst a wide group of stakeholders on an approach to energy modeling, rating, and labeling of residential buildings. It is our hope that using this as a starting point, there will be an open and ongoing discussion leading to specific actions to move rapidly to a national system that will deliver a harmonized approach to how we measure and communicate energy use in residential buildings.

Download PDF (100 KB) »

Energy Performance Score 2008 Pilot
Findings & Recommendations Report

August 2009

The goal of the Energy Performance Score (EPS) 2008 Pilot was to find an effective, accurate, and cost effective method and set of tools to calculate and report on a home’s energy performance.

Download PDF (1.5 MB) »

Certified Home Performance
Assessing the Market Impacts of Third-Party Certification on Residential Properties

May 2009

The report presents an analysis of the market performance of third-party certified sustainable residential properties in the Portland and Seattle metropolitan areas.

Download PDF (246 KB) »
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