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We’re Portland’s Home Remodeling Experts

Along Maine’s rugged coastline, Portland homeowners balance historic character with modern efficiency. Great Day Improvements proudly serves the area with expert renovation services, delivering high-performance solutions designed for salty air, snow, and shifting seasons.
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Two-story home with upgraded siding and energy-efficient windows, renovated by Great Day Improvements to deliver lasting protection and a polished exterior.

Expert Home Renovation Services in Portland, ME

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Portland Home Remodels, Designed Around You

Accountability

We stand by what we do because we own every step—no handoffs and no wasted time. High quality comes standard with our skilled employees carefully handcrafting our products in the USA. 

Expertise

Our specialized experts live where you live and understand local factors that affect your home. We design and manufacture what we install to ensure a perfect fit every time. 

Value

Your next project is possible with a variety of plan options to fit your budget. We build and install our products to last—for you and the next homeowner.

WHY CHOOSE US
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Explore Your Options, Risk Free

Have questions? Still deciding who to work with? No problem. You can schedule a free, no obligation, in-home consultation. Our team will walk you through all your options and provide you with a detailed project quote so you can choose your remodeler with confidence. 

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The Great Day Improvements Experts in Portland, ME

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Homeowners Love Working With Great Day

We have no complaints. There were a couple of communication issues just before the actual installation bu…
Bob Sartin View Review

We have no complaints. There were a couple of communication issues just before the actual installation but nothing big. The windows look great and the installer did a good job installing and cleaning up afterwards

Install crew were great. Ty and Kevin left the job clean and wanted everything right. They came back to a…
Joel LaFrange View Review

Install crew were great. Ty and Kevin left the job clean and wanted everything right. They came back to adjust a couple of doors and wanted to be sure they delivered a first class product. 5 out of 5. The only issue was on the original sale the foundation needed to be torn out and replaced with footers. The sales rep should have been able to make that determination. This very well may have changed the size and scope of the project.

The installers at a great job very punctual, cleaned up after themselves well and educated us on how the…
doctorboynton View Review

The installers at a great job very punctual, cleaned up after themselves well and educated us on how the windows work.

Had several windows replaced. Great customer service with regards to the initial Champion sales rep meeti…
Robert Eaton View Review

Had several windows replaced. Great customer service with regards to the initial Champion sales rep meeting. The whole process and communications with Champion were seamless. Installation team did a great job.

Jason was great! Took his time to explain everything to me and make sure I am comfortable with a full und…
Jamie Bragg View Review

Jason was great! Took his time to explain everything to me and make sure I am comfortable with a full understanding.

Tranice was very knowledgeable and helpful. She was not too pushy which is important for me.
Janice Hill View Review

Tranice was very knowledgeable and helpful. She was not too pushy which is important for me.

Replaced a storm door and front door, excellent work.
Dane Emmel View Review

Replaced a storm door and front door, excellent work.

I had the pleasure of meeting with Rich today to explain Champion window options. He was very knowledgeab…
Barbara Colby View Review

I had the pleasure of meeting with Rich today to explain Champion window options. He was very knowledgeable and well prepared to answer questions and concerns.

First of all, I want to say that it was a great, if not exceptional presentation by Payne. He gave me all…
William Stoner View Review

First of all, I want to say that it was a great, if not exceptional presentation by Payne. He gave me all of the options that I had available to me. He gave me a look at all of the samples that were available and he discussed all of these with me and my wife. He is a very commendable, individual, with great attention to detail. And was very thorough in assessing our needs and your product to meet those needs. Why we did not sign an agreement today, I am highly considering your options but waiting for another quote from a competitor. This was a quote or presentation that was pre-rescheduled and I’m obligated to attend.

Great job on the installation!!!
Dexter Lindsey View Review

Great job on the installation!!!

Homeowners Love Working with Great Day

Image
We have no complaints. There were a couple of communication issues just before the actual installation bu…
Bob Sartin View Review

We have no complaints. There were a couple of communication issues just before the actual installation but nothing big. The windows look great and the installer did a good job installing and cleaning up afterwards

Install crew were great. Ty and Kevin left the job clean and wanted everything right. They came back to a…
Joel LaFrange View Review

Install crew were great. Ty and Kevin left the job clean and wanted everything right. They came back to adjust a couple of doors and wanted to be sure they delivered a first class product. 5 out of 5. The only issue was on the original sale the foundation needed to be torn out and replaced with footers. The sales rep should have been able to make that determination. This very well may have changed the size and scope of the project.

The installers at a great job very punctual, cleaned up after themselves well and educated us on how the…
doctorboynton View Review

The installers at a great job very punctual, cleaned up after themselves well and educated us on how the windows work.

Had several windows replaced. Great customer service with regards to the initial Champion sales rep meeti…
Robert Eaton View Review

Had several windows replaced. Great customer service with regards to the initial Champion sales rep meeting. The whole process and communications with Champion were seamless. Installation team did a great job.

Jason was great! Took his time to explain everything to me and make sure I am comfortable with a full und…
Jamie Bragg View Review

Jason was great! Took his time to explain everything to me and make sure I am comfortable with a full understanding.

Tranice was very knowledgeable and helpful. She was not too pushy which is important for me.
Janice Hill View Review

Tranice was very knowledgeable and helpful. She was not too pushy which is important for me.

Replaced a storm door and front door, excellent work.
Dane Emmel View Review

Replaced a storm door and front door, excellent work.

I had the pleasure of meeting with Rich today to explain Champion window options. He was very knowledgeab…
Barbara Colby View Review

I had the pleasure of meeting with Rich today to explain Champion window options. He was very knowledgeable and well prepared to answer questions and concerns.

First of all, I want to say that it was a great, if not exceptional presentation by Payne. He gave me all…
William Stoner View Review

First of all, I want to say that it was a great, if not exceptional presentation by Payne. He gave me all of the options that I had available to me. He gave me a look at all of the samples that were available and he discussed all of these with me and my wife. He is a very commendable, individual, with great attention to detail. And was very thorough in assessing our needs and your product to meet those needs. Why we did not sign an agreement today, I am highly considering your options but waiting for another quote from a competitor. This was a quote or presentation that was pre-rescheduled and I’m obligated to attend.

Great job on the installation!!!
Dexter Lindsey View Review

Great job on the installation!!!

Browse Additional Home Remodelers Near Portland, ME

You can find Great Day services all across the country – including these places nearby.

Questions About Our Home Remodeling in Portland, ME

What types of home remodeling projects does Great Day offer in Portland?

We specialize in a wide range of remodeling services, including gutters, sunrooms, doors, and more. Every project is managed from design to installation by our in-house experts—no handoffs or subcontractors.

Do you offer financing options for Portland homeowners?

Absolutely. We offer several flexible financing options to make your home improvement project more affordable. We can work with you to find a plan that fits your budget, including 0% interest plans and extended payment terms. During your consultation, we’ll walk you through the best options for your project goals.

Do your remodeling projects in Portland come with a warranty?

Yes—all of our products and installations are backed by industry-leading lifetime warranties. We stand confidently behind our work—giving Portland homeowners peace of mind that their investment is protected for years to come.

What makes Great Day Improvements different from other Portland contractors?

We’re not general contractors—we’re home remodeling experts who take full responsibility for every phase of your project. Our local knowledge, start-to-finish ownership of the process, and national reputation mean you get personalized service backed by proven brands.

Can I see examples of your work in the Portland area?

We’re proud to serve the Portland area and have completed projects across Maine. View our online gallery or schedule a free consultation to see all of your design and style options.

How do I get started with Great Day Improvements?

It starts with a free consultation where we listen to your needs, assess your space, and provide expert recommendations. From there, we create a custom plan that works for your home, your budget, and your timeline. Give us a call at (800) 4-GREAT-DAY or fill out our contact form and we’ll schedule your free, in-home consultation at your convenience.

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