Evergreen Your Home
With Maine’s Comfort & Efficiency Experts

Evergreen Your Home
With Maine’s Comfort & Efficiency Experts

couple playing with dog in backyard of their home

Creating a Comfortable Nest for Baby

How Clare & Tim Upgraded Their Comfort with New Attic…

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Photography by Molly Haley, mollyhaley.com

From Damp to Dry — A Westbrook Basement Transformed

Basement Waterproofing in Westbrook, Maine: Heather’s Project with Evergreen Home…

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couple smiling in front of their white house

From Cold and Leaky to Warm and Efficient

How Jay and Rebecca Prioritized Comfort, Efficiency, and Their Home’s…

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Linda and Sam standing together in their garden, smiling in front of their home after completing an exterior home improvement project

A Warm, Comfortable Home, Ten Years On

How Sam and Linda Transformed Their Maine Home with Upgraded…

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Hidden insulation problems in a newer Belfast home

How a Belfast homeowner uncovered attic insulation issues and saved…

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Our Services

Evergreen Home Performance: Maine’s Energy Audit, Insulation & Basement Waterproofing Experts

  • A local Maine business with almost 2 decades of experience
  • 4,500 Maine homes improved across nearly 200 communities
  • The leading contractor for Efficiency Maine insulation rebates
  • More BPI-certified staff than any other Maine business

Since 2006, we’ve worked with thousands of homeowners from Portland to Rockland and throughout Southern and Coastal Maine to make lasting improvements—using building science and a deep knowledge of how Maine homes work. When you’re ready to make your home more comfortable, healthy, and efficient—we’re here to listen… and guide you on your journey.

LEARN MORE ABOUT EVERGREEN

Available Now: Record-High Incentives

  • Up to $8,000 in Efficiency Maine rebates
  • Financing as low as $50 a month

This is as good as we’ve ever seen it here in Maine, and we can’t guarantee it will be around for long—don’t miss out on this once-in-a-lifetime opportunity!

LEARN MORE ABOUT INCENTIVES

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

service area map - southern and coastal maine

Our Latest Articles

How much does attic insulation cost in Maine?

If you’ve noticed foggy windows, musty closets, or cold rooms …

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What to do if your basement floods after heavy rain

If you found water in your basement after a storm, … Read more

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How much does it cost to fix a wet basement in Maine?

If you’ve noticed foggy windows, musty closets, or cold rooms …

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Don’t wait—book your free consult now and lock in today’s record-high rebates.

Evergreen came out 2 years ago to do an assessment and insulate our roof. This year we had them come back and do the basement as well. They are hands-down the best crew we've ever hired to work on our house. They are experts at what they do, and super meticulous in their work. After working in our house for a week with blown insulation, there was no trace they were ever here. We've seen a huge decrease in our energy bills while at the same time the house has become way more comfortable. Can't recommend them enough.

RC Lations II

Portland

Very Satisfied with the work performed by Evergreen. Professional employees, high quality work done in a timely manner. My sales rep was Justin, and he was phenomenal During the initial walk around my house, he gave me great ideas for how to improve the efficiency of our home. We will consult with Evergreen for our future home projects.

Adam G.

Westbrook

My experience with Evergreen was excellent. From their thorough and thoughtful initial consultation to their detailed post-work visit, the team was professional, knowledgeable, and responsive. Their workmanship was top notch. Our home is now much warmer and more efficient. I highly recommend their services!

Douglas R.

Edgecomb

Evergreen completed the work at my home thoroughly and professionally. An inspector from Efficiency Maine came to inspect afterwards and described it as "state of the art" and "outstanding". The crew was very pleasant and considerate during the project. Their cleanup each day was perfect. Communications with the office were easy and reliable. I am very satisfied.

Catherine H.

South Portland

I highly recommend Evergreen! 1st, I had a home efficiency inspection (that was free) & Bryan P. was great! He took the time needed, asked & listened to what I thought were priorities, explained clearly what he thought were priorities & why, then gave me numerous options. No pressure whatsoever. Then I had my attic sealed & insulated as the 1st step & Bryan came along on day 1 to introduce everyone & make sure we were all on the same page. Bruce's team (inc. Kelsey & Roland) did the work - they were exceptional!!

Melissa M.

Kennebunk

I am very pleased with my experience with Evergreen Home Performance. I met several times with Richard Burbank and he was very detailed in his explanations to all of my questions. He provided me with several options for improving the insulation to our home. The team of installers were very professional and respectful of our home. They did a great job of cleaning up every day after the days work and they were also very responsive to all my questions as well as we collaborated to get our home better insulated. It was a pleasure to work with Richard and…

Brian C.

Falmouth

I was very impressed by the professionalism of this company and the workers. Brian R. was very prompt in replying to my questions; the crew was meticulous in all parts of the work and attentive to the safety aspects concerning Covid; and Brian was extremely thorough in the final inspection. My attic is now snug and warm and I've noticed that the second floor is warmer as well.

Julia S.

Rockland

We are so pleased with the work the team from Evergreen Home Performance did in our home. The project included encapsulation of our basement with a reinforced vapor barrier, installation of a sump pump, spray foam insulation on the walls and insulation of the heating duct work. Everyone at Evergreen was friendly and professional. The project was completed on time and in budget. Our home is much cozier and warmer since the project was completed.

Linda Metzger

Working with Evergreen was a dream! Professional, knowledgeable, and super clean work. Communication was fast and service impeccable. The bedroom floors in our 1960's split ranch will be warm with the new insulation between them and the garage. Bring on the snow! (not really, but sort of)

Jess Dee Proctor

The crew members from Evergreen Home Performance each made sure to greet us every day, while maintaining their distance in this time of the pandemic. Their work took a total of nine days, spread over three weeks. Even though they were working in multiple rooms of our house, as well as the basement and attic, they were unobtrusive and always cleaned up after themselves every day. The on-sight manager kept us informed of their daily schedule so we'd know which parts of the house they'd be working on.

Bob & Sue

Whitefield

We had Evergreen come out to our tiny old (100+ year old) house to see what they would recommend for decreasing our carbon footprint, saving money, and increasing our comfort in the cold season. Richard and Bryan were great to work with, patiently answering our many questions and walking us through multiple options. We could only afford to tackle a few areas this year; we ended up replacing some windows and having them weatherize the entire house.

Alan M.

Falmouth

Evergreen came back this year to finish insulating our house. We have been remodeling and renovating an 1850s cape for several years. Their employees are very professional and pleasant to deal with. Over several years Brian Robinson has been able to schedule us in for several small areas that needed addressing and finally turning a room we used to close off in the winter into a comfortable usable space. We primarily heat with wood and since Evergreens great work our furnace has only come on ONCE this winter. Fantastic. Really satisfied customer in Thomaston.

Chris F.

Thomaston

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

"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.

Evergreen did a fantastic job replacing 28 windows in our house. They were friendly, courteous, and very detail oriented. Brian did a great job planning, estimating and executing the project. Our energy use has dropped significantly since the work was done.

Alex B.

Kittery

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