Top-rated basement remodelers.

Get matched with top basement remodelers in Alton Bay, NH

Enter your zip and get matched with up to 5 pros

Need a pro for your basement remodel project in Alton Bay, NH?

Select your specific project to find the pro for you.

TRUSTED BY ALTON BAY, NH HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon46
    Verified basement remodels reviews

Find Basement remodelers in Alton Bay

Avatar for MMP Construction Inc

MMP Construction Inc

4.70(
191
)
Approved Pro

MMP Construction Inc

4.70(
191
)
Approved Pro
Customers say: Super punctual
2004 years of experience
Free onsite estimate

At MMP Construction we pride ourselves on delivering great craftsmanship, and providing the best customer experience at competitive prices. From complete remodeling and additions, to snow removal and minor roof repairs we also specialize in 203k and home style loans, MMP Construction will complete the job in a timely and professional manner. We understand the investments our customers are making and we proactively provide updated timelines and information regarding the job, from start to finish.

"We needed a skylight installed in our bathroom, and MMP did an excellent job--we are very happy with it! The team was friendly and worked quickly and efficiently to get it done before it got dark, and the quality of their work was excellent. Matt was very friendly and nice to communicate with as well, and always responded right away. I highly recommend MMP Construction to anyone looking for great quality work and excellent customer service."

Nathan S on November 2022

At MMP Construction we pride ourselves on delivering great craftsmanship, and providing the best customer experience at competitive prices. From complete remodeling and additions, to snow removal and minor roof repairs we also specialize in 203k and home style loans, MMP Construction will complete the job in a timely and professional manner. We understand the investments our customers are making and we proactively provide updated timelines and information regarding the job, from start to finish.

"We needed a skylight installed in our bathroom, and MMP did an excellent job--we are very happy with it! The team was friendly and worked quickly and efficiently to get it done before it got dark, and the quality of their work was excellent. Matt was very friendly and nice to communicate with as well, and always responded right away. I highly recommend MMP Construction to anyone looking for great quality work and excellent customer service."

Nathan S on November 2022


Avatar for NH Projects LLC

NH Projects LLC

4.97(
19
)
Approved Pro

NH Projects LLC

4.97(
19
)
Approved Pro
Customers say: Quick response
2021 years of experience
Free onsite estimate

NH Projects LLC is the place to call for all your basement and bathroom remodeling needs. Our small team brings well over 35 years of construction experience to ensure your project goes smoothly and compliments your space. We pride ourselves on honestly, hard work, and innovate skills to aid our customers in their home improvement endeavors. Give us a call today!

"Because we were going away for an extended time, and insulation work by others had to be completed first, we had to schedule drywall workday NH Projects under a rather tight time frame. Despite uncooperative weather (lots of rain slowing the drying time), they managed to get everything done as needed, working around other scheduled work they had. They were prompt, professional, and a pleasure to interact with, in addition to doing excellent work."

John R on November 2023

NH Projects LLC is the place to call for all your basement and bathroom remodeling needs. Our small team brings well over 35 years of construction experience to ensure your project goes smoothly and compliments your space. We pride ourselves on honestly, hard work, and innovate skills to aid our customers in their home improvement endeavors. Give us a call today!

"Because we were going away for an extended time, and insulation work by others had to be completed first, we had to schedule drywall workday NH Projects under a rather tight time frame. Despite uncooperative weather (lots of rain slowing the drying time), they managed to get everything done as needed, working around other scheduled work they had. They were prompt, professional, and a pleasure to interact with, in addition to doing excellent work."

John R on November 2023


Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

4.83(
334
)
Approved Pro

Owens Corning Basement Finishing System

4.83(
334
)
Approved Pro
Super Service Award
Customers say: True professional
1990 years of experience
Free onsite estimate

Lux Renovations, LLC exclusive provider of the Owens Corning Basement Finishing System, has been serving New England homeowners since 2002. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 17 years in a row. Something like that doesn't happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A free consultation and design is always available.

"Overall, the finishing of my basement went pretty smooth. The Owens Corning product, drop down ceiling, and flooring are all really sharp. In the beginning everything went fast and smooth with the framing and wall/floor/ceiling install being done within 2 weeks. There were some hiccups with minor imperfections, tv mount in wrong spot, etc. Those were fixed promptly. After that is when I ran into issues with other items in my contract that were not taken care of and the project felt forgot about. Just had some minor electric work, stairs to get carpeted, and didn't receive hanging clips yet. I had to constantly ask about these items and every answer would be "I forgot to ask or send the clips". I eventually got the items completed, but am not happiest that it took almost a month and constant reminding to get these items that should've been scheduled for during the project."

Mitchell K on December 2025

Lux Renovations, LLC exclusive provider of the Owens Corning Basement Finishing System, has been serving New England homeowners since 2002. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 17 years in a row. Something like that doesn't happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A free consultation and design is always available.

"Overall, the finishing of my basement went pretty smooth. The Owens Corning product, drop down ceiling, and flooring are all really sharp. In the beginning everything went fast and smooth with the framing and wall/floor/ceiling install being done within 2 weeks. There were some hiccups with minor imperfections, tv mount in wrong spot, etc. Those were fixed promptly. After that is when I ran into issues with other items in my contract that were not taken care of and the project felt forgot about. Just had some minor electric work, stairs to get carpeted, and didn't receive hanging clips yet. I had to constantly ask about these items and every answer would be "I forgot to ask or send the clips". I eventually got the items completed, but am not happiest that it took almost a month and constant reminding to get these items that should've been scheduled for during the project."

Mitchell K on December 2025


Avatar for J&J Building and Restoration

J&J Building and Restoration

4.94(
17
)
Approved Pro

J&J Building and Restoration

4.94(
17
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2019 years of experience

With 20 years of experience transform your home with J&J Building and Restoration’s comprehensive additions and remodeling services. Whether you're looking to expand your living space, update outdated features, create a more functional layout, install a new roof, deck, siding, doors, trim or so much more our team is here to bring your vision to fruition. With a focus on superior workmanship and customer satisfaction, we guide clients through every step of the process, delivering stunning results that enhance both the beauty and value of their homes. Senior Citizen and Military Veteran Discounts Available - Inquire Within Deposits May Be Required - Inquire Within Accepts Cash, Check, Major Credit Cards (Service Fee May Apply), Zelle, Venmo, Cash App & PayPal

"J&J did a great job with a difficult task. Not the easiest roofing project to do but they did it with quality and left the job site spotless! Thrilled with the results and would recommend highly!"

Josh H on December 2024

With 20 years of experience transform your home with J&J Building and Restoration’s comprehensive additions and remodeling services. Whether you're looking to expand your living space, update outdated features, create a more functional layout, install a new roof, deck, siding, doors, trim or so much more our team is here to bring your vision to fruition. With a focus on superior workmanship and customer satisfaction, we guide clients through every step of the process, delivering stunning results that enhance both the beauty and value of their homes. Senior Citizen and Military Veteran Discounts Available - Inquire Within Deposits May Be Required - Inquire Within Accepts Cash, Check, Major Credit Cards (Service Fee May Apply), Zelle, Venmo, Cash App & PayPal

"J&J did a great job with a difficult task. Not the easiest roofing project to do but they did it with quality and left the job site spotless! Thrilled with the results and would recommend highly!"

Josh H on December 2024


Avatar for Anything & Everything Home Improvement LLC

Anything & Everything Home Improvement LLC

4.83(
59
)
Approved Pro

Anything & Everything Home Improvement LLC

4.83(
59
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2008 years of experience

Anything & Everything Home Improvement's Mission is to provide customer's great service in every Home Improvement they are looking to have done. We are your Home Improvement specialists! One call to complete every home project! From a small remodel service to building you your dream home! We offer free estimates!

"Jesse and his veteran crew of subs built a large log home for us. These are tricky homes to build. Any unexpected events were handled professionally. We plan to hire him again to renovate the unfinished basement."

Jennifer G on May 2022

Anything & Everything Home Improvement's Mission is to provide customer's great service in every Home Improvement they are looking to have done. We are your Home Improvement specialists! One call to complete every home project! From a small remodel service to building you your dream home! We offer free estimates!

"Jesse and his veteran crew of subs built a large log home for us. These are tricky homes to build. Any unexpected events were handled professionally. We plan to hire him again to renovate the unfinished basement."

Jennifer G on May 2022


Avatar for NW Painting & Handyman Service

NW Painting & Handyman Service

5.00(
9
)
Approved Pro

NW Painting & Handyman Service

5.00(
9
)
Approved Pro
Customers say: Quick response
2018 years of experience
Free onsite estimate

NW Painting is a family operated, local business out of Canterbury, NH built on quality workmanship and first-class customer service. With over 10 years of residential and commercial painting experience we aim to excel at quality workmanship and first-class customer service with every job – from the largest exterior painting job to the smallest of water filter installations. No matter the project, NW Painting and Handyman Services will strive for 100% satisfaction by implementing reliable, meticulous, and efficient business practices with every quote. Proud members of the Better Business Bureau & the Painting Contractors Association. Lead Certified Company through the EPA

"We are very happy with the work completed. Very professional and courteous workers. We will, in fact have already, recommend them."

John T on January 2025

NW Painting is a family operated, local business out of Canterbury, NH built on quality workmanship and first-class customer service. With over 10 years of residential and commercial painting experience we aim to excel at quality workmanship and first-class customer service with every job – from the largest exterior painting job to the smallest of water filter installations. No matter the project, NW Painting and Handyman Services will strive for 100% satisfaction by implementing reliable, meticulous, and efficient business practices with every quote. Proud members of the Better Business Bureau & the Painting Contractors Association. Lead Certified Company through the EPA

"We are very happy with the work completed. Very professional and courteous workers. We will, in fact have already, recommend them."

John T on January 2025


Avatar for Longarone Exteriors

Longarone Exteriors

5.00(
7
)
Approved Pro

Longarone Exteriors

5.00(
7
)
Approved Pro
Customers say: Quick response
2019 years of experience
Free onsite estimate

Longarone Exteriors Inc has the distinction of being one of the highest rated construction companies. It is our ability to provide clients with exceptional work, while always developing lasting relationships with our clientele, that sets us apart from the crowd. Behind the high ratings from the Better Business Bureau are our team of highly experienced professionals, completely obsessed with the idea of building projects in the most efficient, time effective, and with the lowest cost methods possible, all while providing our clients with the type of experience that has allowed us to grow in good times and bad, since 2019.

"Longarone in the best company that you can have. They are amazing and my house looks great"

Gustavo M on July 2025

Longarone Exteriors Inc has the distinction of being one of the highest rated construction companies. It is our ability to provide clients with exceptional work, while always developing lasting relationships with our clientele, that sets us apart from the crowd. Behind the high ratings from the Better Business Bureau are our team of highly experienced professionals, completely obsessed with the idea of building projects in the most efficient, time effective, and with the lowest cost methods possible, all while providing our clients with the type of experience that has allowed us to grow in good times and bad, since 2019.

"Longarone in the best company that you can have. They are amazing and my house looks great"

Gustavo M on July 2025


Avatar for Horsman Builders

Horsman Builders

5.00(
19
)
Approved Pro

Horsman Builders

5.00(
19
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1986 years of experience

We are a full service genral contracting company specializing in all aspects of commercial , residential,industrial construction projects from small to large scale.Most work is performed 'in house" as well as utilizing a tight knit group of sub contractors as needed.

"Company was very good to work with. Great with communication. Needed the job done quite fast and they were able to squeeze me in to get it done for when I needed it."

Jennifer G on November 2023

We are a full service genral contracting company specializing in all aspects of commercial , residential,industrial construction projects from small to large scale.Most work is performed 'in house" as well as utilizing a tight knit group of sub contractors as needed.

"Company was very good to work with. Great with communication. Needed the job done quite fast and they were able to squeeze me in to get it done for when I needed it."

Jennifer G on November 2023


Avatar for Magic Frog Carpentry & Woodworks

Magic Frog Carpentry & Woodworks

4.93(
7
)
Approved Pro

Magic Frog Carpentry & Woodworks

4.93(
7
)
Approved Pro
Super Service Award
Customers say: Quick response
2015 years of experience
Free onsite estimate

Meeting somebody, being invited into their house, and listening to their ideas of how they would like to transform their space to better suit their needs excites me. It brings me immense pleasure to be welcomed on an idea based visual journey in creating a customized dwelling in order to improve the quality of function in somebody's daily home life. Bringing ideas to fruition is my specialty. With equal enjoyment in making those popcorn ceilings that you've adored for so long disappear in an array of smoothness, gutting the kitchen where nothing seems to fit anywhere, including the cook, and installing cabinets and lights that transform the "heart of the home" into a space you don't want to step out of, or erecting that garage and mudroom to get your cars out of the weather and the clutter out of your foyer. At Magic Frog Carpentry & Woodworks I live in a solutions based mentality.

"We hired Adam to convert our single-car garage into a bonus room (framing, drywall, electrical, flooring, moved a gas line, rerouted the hose spigot, and replaced the garage door with a slider). The quality is fantastic. I’d recommend him to anyone. What really stood out: Adam cared about the details. I had a rough vision, but when we hit decisions I hadn’t thought through, he’d flag it and, if I didn’t have a strong preference, steer me toward the right choice. He had a real vision for how it should look, not just doing the bare minimum or blindly following directions. The other thing was how clean he and any of his crew kept their workspace. This didn't actually matter since they were in a garage we weren't using, but every day it was immaculate, and all the material scraps were removed. Hire Adam because he delivers excellent workmanship, sweats the details, and helps you make smart decisions along the way. Plus, he runs a clean, organized job site."

Scott F on December 2025

Meeting somebody, being invited into their house, and listening to their ideas of how they would like to transform their space to better suit their needs excites me. It brings me immense pleasure to be welcomed on an idea based visual journey in creating a customized dwelling in order to improve the quality of function in somebody's daily home life. Bringing ideas to fruition is my specialty. With equal enjoyment in making those popcorn ceilings that you've adored for so long disappear in an array of smoothness, gutting the kitchen where nothing seems to fit anywhere, including the cook, and installing cabinets and lights that transform the "heart of the home" into a space you don't want to step out of, or erecting that garage and mudroom to get your cars out of the weather and the clutter out of your foyer. At Magic Frog Carpentry & Woodworks I live in a solutions based mentality.

"We hired Adam to convert our single-car garage into a bonus room (framing, drywall, electrical, flooring, moved a gas line, rerouted the hose spigot, and replaced the garage door with a slider). The quality is fantastic. I’d recommend him to anyone. What really stood out: Adam cared about the details. I had a rough vision, but when we hit decisions I hadn’t thought through, he’d flag it and, if I didn’t have a strong preference, steer me toward the right choice. He had a real vision for how it should look, not just doing the bare minimum or blindly following directions. The other thing was how clean he and any of his crew kept their workspace. This didn't actually matter since they were in a garage we weren't using, but every day it was immaculate, and all the material scraps were removed. Hire Adam because he delivers excellent workmanship, sweats the details, and helps you make smart decisions along the way. Plus, he runs a clean, organized job site."

Scott F on December 2025


Bear Island Builders

5.00(
3
)
Approved Pro

Bear Island Builders

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2008 years of experience

With over 10 years experience in the home maintenance industry, Bear Island Builders is your industry expert in Gilmanton. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Old school and his craftsmanship makes him unique. He listens to the voice of his customers."

Scott H on November 2020

With over 10 years experience in the home maintenance industry, Bear Island Builders is your industry expert in Gilmanton. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Old school and his craftsmanship makes him unique. He listens to the voice of his customers."

Scott H on November 2020

...
Showing 1-10 of 134
Basement Remodel questions, answered by experts

Save money on your basement finishing project by making cost-effective decisions such as minimizing structural changes and avoiding costly construction revisions. DIY simpler tasks such as painting or basic cleanup to reduce labor costs. You can also opt for energy-efficient fixtures and materials that may qualify for rebates or tax incentives.

Physically, the most challenging part of finishing a basement is installing egress windows or doors when the space is below ground level. Mentally, the hardest part may be envisioning the project and planning around load-bearing and mechanical obstacles.

While framing a basement is not as difficult as finishing a basement, it's something you should typically leave to the pros. That’s because if something is installed correctly, it will affect your entire basement. However, you can take care of some of the smaller tasks, like filling holes or putting up some insulation.

Costs are guided by renovation scope, materials chosen, project duration, structural needs, and labor. Prioritizing tasks prevents unforeseen expenses.

Adding an extension or addition to your home costs more than a loft conversion in all but the rarest cases where the home's structural integrity is lacking. Because a home addition requires a new foundation section or significant structural upgrades to handle a cantilevered portion, the cost compared to almost any loft conversion is significantly greater for the same square footage.

The Alton Bay, NH homeowners’ guide to basement remodels

From average costs to expert advice, get all the answers you need to get your job done.