Service Area

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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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

Very easy process, start to finish.  Friendly, professional, and really know their stuff.  They made some improvements to our condo and we were very happy with how it played out.  Would definitely recommend them.

Clayton Eames

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

Professional, friendly and hard-working staff. The product/approach they use for insulation is top notch. We felt the difference immediately, both from added warmth and eliminating drafts. The team and management were easily available to answer our questions or coordinate meeting times. Highly recommended.

Kevin J.

Yarmouth

Greetings one and all! I am writing to express my gratitude to all involved in my insulation project.  From start to finish, I appreciate the universal theme which was maintained by each and every one of you, to ensure that my home was insulated and protected from freezing pipes as if it was your home. Andrea, thanks for helping me navigate my way to the project. Nate, thanks for the thorough initial assessment and the time you took to explain this project to me, step by step. Brian, thanks for setting up my project - so happy

Michele

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

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

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

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

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

We just finished a large project of air sealing and reinsulating our 1890s basement and attic which 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.

Emily Gallant

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

Evergreen did an amazing job insulating our historic home. Their professional staff worked hard to ensure the tough areas in the attic were covered, and clearly communicated their progress. We are seeing the results with our discounted heating bills. Thank you, Evergreen!

Melissa Knoll

Portland

Thanks Evergreen Home Performance for helping to make our home more efficient. Many thanks as well to Bryan for the initial walk through and recommendations to make our home more efficient and to Dave, Roland, and Jacob for a job that was done professionally and courteous.  We were amazed at the level of efficiency and everyday they made sure to protect our floors, carpets, and furniture. We had daily discussions with Dave about progress and what was being done and where they were at in the project.

Carol Fink

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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