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Find Basement remodelers in Alton Bay

Avatar for C Squared Carpentry

C Squared Carpentry

5.00(
1
)
Approved Pro

C Squared Carpentry

5.00(
1
)
Approved Pro
2 years of experience
Free onsite estimate

C Squared Carpentry is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"We became aware of a dangerous issue at our camp in NH and C Squared Carpentry came to the rescue!! On short notice and while working with me on doing the job in pieces in order to allow me to spread payments out, C Squared made room in their schedule to come out quickly and make this repair before the NH winter could cause more damage. We are so happy with the work, the professionalism and the excellent customer service. And we are extremely grateful to C Squared!! Highly recommend!!! "

Beth R on January 2026

C Squared Carpentry is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"We became aware of a dangerous issue at our camp in NH and C Squared Carpentry came to the rescue!! On short notice and while working with me on doing the job in pieces in order to allow me to spread payments out, C Squared made room in their schedule to come out quickly and make this repair before the NH winter could cause more damage. We are so happy with the work, the professionalism and the excellent customer service. And we are extremely grateful to C Squared!! Highly recommend!!! "

Beth R on January 2026


Avatar for Freedom Framing and More, LLC

Freedom Framing and More, LLC

4.54(
13
)
Approved Pro

Freedom Framing and More, LLC

4.54(
13
)
Approved Pro
Customers say: Quick response
12 years of experience
Free onsite estimate

Freedom Framing and More, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 4 years of experience serving New Hampshire, NH and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

"Timely and quality work"

John D on March 2024

Freedom Framing and More, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 4 years of experience serving New Hampshire, NH and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

"Timely and quality work"

John D on March 2024


Avatar for Envy Homes, LLC

Envy Homes, LLC

4.75(
2
)
Approved Pro

Envy Homes, LLC

4.75(
2
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

With over 10 years in the industry, Envy Homes LLC, takes great pride on providing quality service that customers can believe in. We will always see each project through to the customer's satisfaction. Give us a call today for an estimate and to get a General Contractor out to your home or business today!

"They showed up on time each day, were very knowledgeable of the work they performed. Showed up for the quote when we scheduled the first meeting and we were very impressed with the overall experience. The deck they built was spot on and perfect for our needs. They did make some recommendations as to how it would look and work better for us and we went with their decisions and are so happy and impressed. They were very neat about their work and very easy to talk with. I would never use anyone else, and HIGHLY RECOMMEND them for whatever you need. So great to work with."

phyllis p on July 2023

With over 10 years in the industry, Envy Homes LLC, takes great pride on providing quality service that customers can believe in. We will always see each project through to the customer's satisfaction. Give us a call today for an estimate and to get a General Contractor out to your home or business today!

"They showed up on time each day, were very knowledgeable of the work they performed. Showed up for the quote when we scheduled the first meeting and we were very impressed with the overall experience. The deck they built was spot on and perfect for our needs. They did make some recommendations as to how it would look and work better for us and we went with their decisions and are so happy and impressed. They were very neat about their work and very easy to talk with. I would never use anyone else, and HIGHLY RECOMMEND them for whatever you need. So great to work with."

phyllis p on July 2023


Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

4.83(
340
)
Approved Pro

Owens Corning Basement Finishing System

4.83(
340
)
Approved Pro
Super Service Award
Customers say: True professional
131 local quotes requested
36 years of experience

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.

"The basement project was handled well from start to finish. The sales team, project manager and especially the worker himself were amazing. They understood our needs and were able to make it work. I also work from home and the construction did not cause a negative impact. The space is amazing and has already seen some heavy use during the past couple months. Our 4 year in particular loves it as a play spot! I would highly recommend using them"

Steven K on February 2026

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.

"The basement project was handled well from start to finish. The sales team, project manager and especially the worker himself were amazing. They understood our needs and were able to make it work. I also work from home and the construction did not cause a negative impact. The space is amazing and has already seen some heavy use during the past couple months. Our 4 year in particular loves it as a play spot! I would highly recommend using them"

Steven K on February 2026


Avatar for IDEAL SOLUTIONS LLC

IDEAL SOLUTIONS LLC

5.00(
12
)
Approved Pro

IDEAL SOLUTIONS LLC

5.00(
12
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

We have always loved fixing things. Repair knowledge is not enough without experience. From woodworking to electrical installation, we have fostered all of the skills you need for household repairs and improvements. Whether you need a major repair or a renovation, we can deliver professional skills at a fair price. It is our highest priority to get the job done right the first time, every time. We provide a full consultation to explain available options so that you can choose the service that’s right for your home or business. We strive to meet your project's needs and save you the time!

"The work Ideal Solutions did for me was done professionally and on time. They have an unbelievable attention to detail. They never took the easy way out and made sure I was 100% satisfied. In my experience ideal Solutions are not just carpenters they are craftsmen. Their communication was great and the project was done on budget and on time. "

Jay S on February 2026

We have always loved fixing things. Repair knowledge is not enough without experience. From woodworking to electrical installation, we have fostered all of the skills you need for household repairs and improvements. Whether you need a major repair or a renovation, we can deliver professional skills at a fair price. It is our highest priority to get the job done right the first time, every time. We provide a full consultation to explain available options so that you can choose the service that’s right for your home or business. We strive to meet your project's needs and save you the time!

"The work Ideal Solutions did for me was done professionally and on time. They have an unbelievable attention to detail. They never took the easy way out and made sure I was 100% satisfied. In my experience ideal Solutions are not just carpenters they are craftsmen. Their communication was great and the project was done on budget and on time. "

Jay S on February 2026


Avatar for New England Home Improvements

New England Home Improvements

5.00(
5
)
Approved Pro

New England Home Improvements

5.00(
5
)
Approved Pro
Super Service Award
6 years of experience
Free onsite estimate

New England home improvements in locally owned and operated specializing in general remodeling services. We are reliable, easy to work with, and dedicated to customer satisfaction. pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Micah was a joy to work with, on time, reasonably priced."

Steven G on March 2025

New England home improvements in locally owned and operated specializing in general remodeling services. We are reliable, easy to work with, and dedicated to customer satisfaction. pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Micah was a joy to work with, on time, reasonably priced."

Steven G on March 2025


Avatar for Magic Frog Carpentry & Woodworks

Magic Frog Carpentry & Woodworks

4.95(
10
)
Approved Pro

Magic Frog Carpentry & Woodworks

4.95(
10
)
Approved Pro
Super Service Award
Customers say: Quick response
21 local quotes requested
11 years of experience

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.

"Adam, the owner of Magic Frog Carpentry & Woodworks is great to work with. He is responsive via text and phone conversations. He has a lot of skilled people he works with and does a lot of the work as well. When any hiccup comes up he is quick to get it resolved. This past fall I hired him to do a partial remodel of my kitchen (new countertop, new backsplash, new flooring and painting. I was happy with the work and decided to hire Adam again for a tub to shower conversion. I am really happy with the results of both projects. I plan on reaching out to Adam for the next home project. "

Darien T on February 2026

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.

"Adam, the owner of Magic Frog Carpentry & Woodworks is great to work with. He is responsive via text and phone conversations. He has a lot of skilled people he works with and does a lot of the work as well. When any hiccup comes up he is quick to get it resolved. This past fall I hired him to do a partial remodel of my kitchen (new countertop, new backsplash, new flooring and painting. I was happy with the work and decided to hire Adam again for a tub to shower conversion. I am really happy with the results of both projects. I plan on reaching out to Adam for the next home project. "

Darien T on February 2026


Avatar for DALLASTRA CONSTRUCTION LLC

DALLASTRA CONSTRUCTION LLC

5.00(
4
)
Approved Pro

DALLASTRA CONSTRUCTION LLC

5.00(
4
)
Approved Pro
Super Service Award
12 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Pleasant to deal with. Timely estimate provided. Quality work. I will definitely use them again. "

Carol S on December 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Pleasant to deal with. Timely estimate provided. Quality work. I will definitely use them again. "

Carol S on December 2025


Iron Oak Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Iron Oak Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2026 years of experience
Free onsite estimate

Backed by 30 years of residential and commercial building expertise. From excavation to roof installation, we manage every step with precision. Full design‑build services to bring your vision to life

Backed by 30 years of residential and commercial building expertise. From excavation to roof installation, we manage every step with precision. Full design‑build services to bring your vision to life


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
40 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

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FAQs for basement remodeling projects in Alton Bay, NH

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Alton Bay, NH homeowners’ guide to basement remodelings

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