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

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

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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Contact Us Now

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

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

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

Really great experience from start to finish with Evergreen. They helped us prioritize what needed to be completed first, and has made a significant difference in our hearing costs already. Plus they were really friendly and considerate to work with!

Amy W.

Kennebunk

I cant say enough about this company and the benefits that it created for our family. They are very professional and have effectively re-insulated our home. The heating bill proves the point.

Bob O.

Springvale

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

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

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

Bryan, Dave and the entire Evergreen team are wonderfully professional, prompt and thorough. I enjoyed working with them and look forward to continued work as we upgrade our home! Thank you so much for your professionalism, fairness, time and diligence.

Cait

Yarmouth

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

Evergreen has a professional and reliable team of people who do excellent work. If you want the best of the best in the area, select Evergreen to accomplish your insulation needs.

Mary E.

St. George

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

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

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

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

Jennifer A

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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