Service Area

Trusted by Homeowners in Nearly 200 Maine Cities and Towns

Thousands of Maine homeowners have trusted Evergreen to make their homes more comfortable, efficient, and healthy. From insulation and air sealing to basement waterproofing, we’re improving homes up and down the coast. Curious if we serve your town? Chances are, we do.

Since 2006, Evergreen has improved more than 4,500 homes across nearly 200 Maine communities. We know the housing styles, weather challenges, and energy codes specific to our state—because we live here, too. Whether your home is a 19th-century farmhouse or a newer build with unexpected efficiency or comfort issues, we can help.

Happy Customers, Misty and Jim and their two cute dogs.

Since 2006, We’ve Helped Thousands Of Maine Homeowners With Insulation And Basement Waterproofing

We serve homeowners throughout Southern and Coastal Maine, including:

Androscoggin County

Cumberland County

Energy Audits, Insulation, and Basement Waterproofing Services in Portland, ME

We’re the largest energy efficiency company based right in Portland and we’re here to guide you on your journey to energy-saving and home comfort upgrades.

Knox County

Energy Audits, Insulation, and Basement Waterproofing Services in Rockland, ME

Since 2006, we’ve helped hundreds of Rockland homeowners upgrade insulation, control moisture, and improve indoor comfort with a focus on long-term performance, not short-term patches.

Lincoln County

Sagadahoc County

Waldo County

York County

Evergreen Energy Advisor, Brian Robinson walking through a blower door test with a group of people in a house

Let’s Talk About Your Home

See what your neighbors have to say—visit our testimonials page or explore real customer stories on our case studies page.

No matter where you live in our service area, Evergreen can help you create a more comfortable and energy-efficient home. Schedule your free consult today, and we’ll build a plan that works for your goals, your budget, and your part of Maine.

Call 207-594-2244 or contact us online to get started.

Improving Homes Across Southern and Coastal Maine

From Portland to Rockland and Beyond

Awesome company. It was a few years ago that they did the audit and then we commissioned them to do the work. We subsequently sold our house and moved to South Africa, but their level of service and expertise will live on.

Odette Brown

Evergreen Home Performance shows its expertise from start to finish. Evergreen did three house projects in winter/spring/summer 2020 for me, attic insulation, crawl space under a porch insulation, and basement foam/vapor barrier. From my initial discussion with Bryan, I understood the reasons for choosing different types of insulation, the associated costs, and time estimates. Evergreen scheduled in advance, came when they said they would, and the crews were highly professional in their work and demeanor.

Iris S.

Portland

In the final stages of selling our home, and with a closing date set, an inspection came across an unanticipated issue in our attic. We quickly called in contractors, but nobody was able to identify the source of the problem. Then we thought of Evergreen. Brian Robinson was on site the next morning and immediately identified the source (a faulty roofing job completed three years earlier which had effectively sealed up portions of the ridge vent and restricted air flow - not easily visible with a quick inspection).

Robin McIntosh

Camden

We had Evergreen redo the insulation in our roof. The team handling our project did a great job. They left the house spotless. We've already noticed the difference in how much better our house is retaining heat. I would definitely recommend and will use them for future projects.

Ffej C.

South Portland

The folks at Evergreen did a great job fixing a rather major insulation problem in my house, which they helped identify with a great audit. When the work began, they were thorough, upbeat, and -- dare I say it -- efficient. I strongly recommend them.

Michael Williams

Our house still the most efficient home we’ve ever lived in. And we have you folks to thank for that! A special howdy to Brian Robinson please!

Bruce O’Donal and Eva Butler

We had a fantastic experience working with Evergreen to insulate our roof this winter. Everyone was extremely friendly throughout the process - the crew at our home worked hard, were approachable with questions, and the team leader even showed me around the project to point out specific areas they were working to improve.

Joel Wentz

Great company. Very professional and thorough. They take the time to explain everything and offer options to fit your budget. Wonderful experience from start to finish.

Bonnie Eustace

I cannot say enough great things about working with Evergreen Home Performance. Everything including the initial consultation, the fabulous work crew, the office support and the final resolution was handled in a caring and professional manner. My only regret is that I did not know about them earlier. I enthusiastically recommend Evergreen to anyone with concerns about home energy use.

Darlene R

Bath

Evergreen did everything they said they would and more. I actually don't mind going into the basement now since they sealed it. The air quality in the house is noticeably better and it's warmer in the winter. We can even store clothing down there where before, whatever was in there would mildew. Even the spider population declined! I used to vacuum so many of them from the corners of the ceilings in the house. Not any more!

Loriel Van Dusen

I would recommend Evergreen wholeheartedly because of their professionalism, their follow through, and thoughtful project planning.

Jennifer A

"Working with Evergreen from start to finish was a great experience." See what our customers have to say about their experience with Evergreen Home Performance. 

Jeff L.

Led by Brian Robinson, the Evergreen Home Performance team just completed an insulation refit at my home. It was truly a great experience from start to finish, a period of time that was a fraction of the time that I originally anticipated due to the team's unbelievable work habits and professional knowledge of their tasks. As impressive were the communication skills and friendliness of each and every member of the team.

Anne W.

Rockport

We are thrilled with the job Evergreen did to transform our 213 year old home into a warm, draft-free, cozy space. The entire team led by Bruce was prompt, courteous, knowledgeable, and hard working. If Evergreen could transform our home in this way, we are sure they would make a comparable difference in YOUR home!

Jonathan M.

Bridgton

The team members were very professional, worked very hard, paid very close attention to detail and cleaned up meticulously every day. I really appreciated the care they took knowing the smallest details were going to make a big difference to our heating bills. Thank you!

Pam B.

Brunswick

Portland Buy Local
Efficiency Maine
EPA Lead-Safe Certified
Building Performance Association
BPI Certified