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Improving Homes Across Southern and Coastal Maine

From Portland to Rockland and Beyond

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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

Lincoln County

Sagadahoc County

Waldo County

York County

More Counties We Serve

Androscoggin

  • Durham
  • Lisbon

Cumberland

  • Brunswick
  • Cape Elizabeth
  • Falmouth
  • Freeport
  • Gorham
  • Portland
  • Scarborough
  • South Portland
  • Westbrook
  • Yarmouth

Hancock

  • Bar Harbor
  • Blue Hill
  • Deer Isle
  • Ellsworth
  • Mount Desert
  • Trenton

Kennebec

  • Farmingdale
  • Gardiner
  • Hallowell
  • Pittston

Knox

  • Camden
  • Owls Head
  • Rockland
  • Rockport
  • Thomaston
  • Warren

Lincoln

  • Boothbay
  • Boothbay Harbor
  • Bristol
  • Damariscotta
  • Newcastle
  • Nobleboro
  • Waldoboro
  • Wiscasset

Penobscot

  • Bangor
  • Hampden
  • Hermon

Sagadahoc

  • Arrowsic
  • Bath
  • Bowdoinham
  • Georgetown
  • Phippsburg
  • Richmond
  • Topsham
  • Woolwich

Waldo

  • Belfast
  • Lincolnville
  • Northport
  • Searsport
  • Stockton Springs

York

  • Berwick
  • Biddeford
  • Kennebunk
  • Kennebunkport
  • Kittery
  • Ogunquit
  • Saco
  • Sanford
  • South Berwick
  • Wells
  • York
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.

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Improving Homes Across Southern and Coastal Maine

From Portland to Rockland and Beyond

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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 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

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

First we have Evergreen do a BIG project worth about $20K (windows, basement, insulate & rebuild an entire wall, a door, attics, and air sealing). They were so great we had them come back later when we decided we did want to do our other door. They are professional and do great work. They take care of your home and are trustworthy, and on top of all that friendly! I highly recommend you call them!

Garreth C Debiegun

My husband and I bought a home on the water in Owls Head and decided to make the investment in Evergreen's recommendations for insulation. Brian Robinson spent 3 hours examining every nook and cranny before he made practical suggestions and explained them thoroughly to us.

Marie McNeely

Owls Head

This team of individuals was professional at all times. They set up barriers that kept the dust at a minimum. They conducted an air flow audit and cut the draft circulation from the outside in half by sealing cracks. They hauled out the old insulation and replaced it with blown in insulation with an R - 60 Value. They also did the rebate paperwork so that I could get my $1500.00 rebate from the state of Maine. I highly recommend Evergreen Home Performance!

Daniel B.

Rockland

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

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

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

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

We absolutely loved our experience with Evergreen. The team was incredibly kind, professional and great to work with. We're very impressed with the quality of work of the Evergreen team and how easy they made everything! Our house had barely any insulation ahead of this project and the results are amazing. Insulating the attic, walls and basement with Evergreen allowed us to tear a 50-year-old furnace, ductwork and oil tank out of the basement and now heat the home with new heat pumps. Evergreen also added 100 sq ft of clean, new storage space to the attic!

Nick S.

South Portland

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

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 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

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

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

190 Riverside St, #2A,
Portland, ME 04103

315 Main Street, #205,
Rockland, ME 04841

207-358-3706

info@evergreenyourhome.com