Our Process
Our Process
What you can expect when you work with Evergreen.
Our Team
Our Team
Meet the experts dedicated to improving your home.
Service Area
Service Area
Learn more about the areas we serve in Southern and Coastal Maine.
Since 2006, Evergreen Home Performance has helped Maine homeowners create healthier, more comfortable, and more energy-efficient homes through home energy audits, insulation, and basement waterproofing services. With offices in Portland and Rockland, we’ve improved thousands of homes using a science-based approach tailored to Maine’s unique climate and housing stock.
We know Maine homes—whether it’s a drafty Victorian, a mid-century Cape, or a newer build that still struggles with comfort issues. No matter your home’s age or design, we listen to you to understand your goals and craft solutions that make a real difference.
Beyond individual homes, we lead the way in helping Mainers access Efficiency Maine rebates and financing, making upgrades more affordable. In 2024, we once again completed more rebate-supported projects than any other contractor in the state.
From York to Belfast and across the Midcoast, our mission is simple: help homeowners create a home that is comfortable, efficient, and built to last.
4,500+ homes improved in nearly 190 Maine towns and cities
15,000+ energy audits conducted
Nearly 20 years in business
25% of our team has been with Evergreen for 12+ years
Our Values
At Evergreen, our values guide everything we do – how we work, how we lead, and how we serve homeowners like you.
- Do the Right Thing – We put people and the planet first, always choosing solutions that create healthier homes and a better future.
- Strive for Excellence – We set high standards, work hard, and continuously improve to deliver the best results for your home.
- Prioritize Relationships – We invest in our team, our customers, and our communities – listening, communicating openly, and treating everyone with respect.
Our goal is to earn your trust by being the partner you can count on to guide you toward a better home. But don’t just take our word for it – visit our testimonials page to hear from real Mainers about their experiences working with our team.
View TestimonialsCertificates and Accreditations
We hold ourselves to the highest standards. These credentials hold us accountable in our commitment to excellence and ensure you receive the best results possible for your home.
- Efficiency Maine – Helping homeowners access rebates and incentives for energy upgrades.
- Building Performance Association (BPA) – Recognized leaders in home performance and energy efficiency.
- Building Performance Institute (BPI) – Evergreen has more BPI-certified employees than any other company in the state!
- Environmental Protection Agency (EPA) – Our lead-safe certification is required for working in and improving homes built before 1978.
- COVID-19 Protection Standards – Prioritizing health and safety in every project.
- Maine Indoor Air Quality Council – Evergreen is a member of this non-profit organization committed to creating healthier homes and indoor environments.
- Better Business Bureau – We are proud to be a BBB Accredited Business!
