Home Energy Score


As of 2018, the City of Portland requires any home within city limits to obtain an official Home Energy Score from a licensed Home Energy Assessor prior to listing. Developed by the National Department of Energy, the report estimates home energy use and associated costs. During a one hour non-invasive assessment, we will analyze the home’s heating & cooling equipment, ductwork, water heater, insulation, windows, & exterior surfaces. The collected data is then compiled to calculate a 1–10 score (10 being the most energy-efficient). We will also recommend improvements that can both raise your score and increase your home's energy efficiency. Once the assessment is complete, a link to your Home Energy Score Report will often be provided within 24 hours. Scores are reported to the Portland Green Building Registry database and are available as public documents of record.

We are your homegrown contractors and assessors who know Portland homes inside and out. Contact us to get your Home Energy Score.


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Assessments take approximately one hour. Weekend or evening appointments available on request.
503 893 5830



Mark is very knowledgable, thorough and easy to work with. Landmark Energy Assessors is my go to for home energy score reports and I highly recommend them to clients or other brokers.
— mike perry, windermere realty trust

Mark does an excellent job - he pays attention to all the details and his many years of experience really shows through in his work.
— Eric, homeowner – se portland



OWNER – Mark allen

As a Portland native, furniture maker and licensed contractor with over 25 years of building experience, I have a thorough understanding of northwest homes as well as the challenges and solutions that our unique climate presents.

CCB# 141914
Certified Home Energy Score Assessor
Certified Lead-Based Paint Renovator