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 was so helpful in securing us Efficiency Maine funding for a big attic insulation project early this winter. They did all of the paperwork, and totally guided us through a vermiculite removal process that included a payment from a trust for the procedure. I could instantly feel the second floor being so much warmer than before. The boiler does not kick on nearly as frequently since they completed the job. It was worth every penny! Brian Robinson was so thorough throughout the whole process including a full walk through after the job had been completed.

Todd W.

Camden

From start to finish, our experience was incredible. Justin was extremely helpful. The crew was fast, friendly, and efficient. And most importantly, our home is WAY warmer and our heating is less costly. I'd highly recommend evergreen to anyone looking to upgrade their home!

John S.

South Portland

We just finished a large project air sealing and reinsulating our 1890s basement and attic. It had been completely renovated 8 years ago, but still felt cold, and lacked proper energy assessment and corrections. We met with Justin in December and were very impressed with his knowledge, professionalism and communication skills and knew Evergreen was who we wanted to work with. Dave was our on hands project manager and was excellent. The office staff has been quick to respond and helpful as well when needed.

E Gallant

Kennebunk

Evergreen is a terrific company to deal with. Polite and efficient crews, meeting deadlines and major reduction in our heat bills. They corrected a lot of issues we suffered from doing work with a shoddy building contractor. We would recommend them to anyone.

Mary Carey

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

A thorough inspection of our (older) house and its energy needs. Competent and personable work crew.

Jacob Watson

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

Jennifer A

I never leave reviews, but had a great experience with Evergreen and wanted to spread the word! In short, we worked with them to insulate our roof this winter and have noticed surprising immediate results. The constant ice dams I have wrestled with are completely gone, and the home is noticeably more comfortable. It's a little too early to tell if our oil bill is going to reduce, but I imagine we will see an impact there as well.

Joel W.

Portland

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 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

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

I have always been impressed by the high level of service, quality of work, and excellent follow-through provided by Evergreen Home Performance in the three projects that they completed at the Wells Reserve at Laudholm over the past several years.

Paul D.

Wells

Evergreen has just completed Phase 2 of 2 at my home. They are professional, hard-working and courteous. They communicate well..no surprises. They've gone above and beyond to make my home comfortable and were very respectful of my home.I recommend them unequivocally!!!Many thanks to Brian, Brian, Rick, Eddie, Dawson and the rest of the Evergreen crew!!

David Henry Feldman

I had gotten estimates from several other companies, but Evergreen was in another league entirely with their professionalism. If you want the job done correctly, I couldn't recommend this company enough.

Rayna Mayo

Freeport

We initially contacted Evergreen through Efficiency Maine for an energy audit, which was conducted promptly and professionally by Justin McEdward, one of their Energy Advisors who is BPI-certified. After a thorough inspection of our newly purchased home, Justin explained in great detail what we needed and did not need. It was agreed that Evergreen would remove all of the existing attic insulation, which was not adequate, and replace it with blown in cellulose, to a rating of R-60.

Thomas W.

Scarborough

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