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Find Basement remodelers in Londonderry

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 ACQ Home Improvement

ACQ Home Improvement

4.94(
8
)
•Approved Pro

ACQ Home Improvement

4.94(
8
)
•Approved Pro
Customers say: Quick response
26 years of experience
Free onsite estimate

With over 20 yrs of experience, ACQ Home Improvement is dedicated to providing our customers with the best quality at a great price. In addition, we are here to build relationships with our customers and communities and provide our employees with a great place to work. We look forward to working with you!

"Jeremy and crew are professional, and expert at what they do. Very customer focused and back their work 100 percent. It was a pleasure working with them"

Curt C on March 2023

With over 20 yrs of experience, ACQ Home Improvement is dedicated to providing our customers with the best quality at a great price. In addition, we are here to build relationships with our customers and communities and provide our employees with a great place to work. We look forward to working with you!

"Jeremy and crew are professional, and expert at what they do. Very customer focused and back their work 100 percent. It was a pleasure working with them"

Curt C on March 2023

Manolie Dwelling Services

5.00(
1
)
•Approved Pro

Manolie Dwelling Services

5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

With over 15 years of experience, Manolie Dwelling Services is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!

"They were great."

Jacquelyn N on April 2021

With over 15 years of experience, Manolie Dwelling Services is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!

"They were great."

Jacquelyn N on April 2021

Avatar for Apple Wood Construction

Apple Wood Construction

5.00(
1
)
•Approved Pro

Apple Wood Construction

5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 years of experience

Hard working team who makes sure everything is done completely and exactly how the customer wants. Versatile company who puts the customer first and prioritizes quality.

"It was a pleasure working with them. They are well organized and very professional."

Johanna E on June 2020

Hard working team who makes sure everything is done completely and exactly how the customer wants. Versatile company who puts the customer first and prioritizes quality.

"It was a pleasure working with them. They are well organized and very professional."

Johanna E on June 2020

Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

4.83(
335
)
•Approved Pro

Owens Corning Basement Finishing System

4.83(
335
)
•Approved Pro
Super Service Award
Customers say: True professional
140 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.

"This company is wonderful. They were prompt, the supplies that they used were quality materials, the contractor that worked in our basement was professional, friendly and and so helpful. The work was completed as scheduled and the basement is gorgeous. The family room looks better than I ever thought it could look. We are so happy with work that was done. The family room looks and feels so much better. The insulation that was used has made the room feel warm and pleasant. The family room that we had before was just a room. The family room that Owens Corning created for us is a very special room that we truly enjoy being in. I would recommend using Owens Corning Basement Systems to anyone."

Lyn D on January 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.

"This company is wonderful. They were prompt, the supplies that they used were quality materials, the contractor that worked in our basement was professional, friendly and and so helpful. The work was completed as scheduled and the basement is gorgeous. The family room looks better than I ever thought it could look. We are so happy with work that was done. The family room looks and feels so much better. The insulation that was used has made the room feel warm and pleasant. The family room that we had before was just a room. The family room that Owens Corning created for us is a very special room that we truly enjoy being in. I would recommend using Owens Corning Basement Systems to anyone."

Lyn D on January 2026

Avatar for Tripeak Building & Remodeling, LLC

Tripeak Building & Remodeling, LLC

5.00(
2
)
•Approved Pro

Tripeak Building & Remodeling, LLC

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Here at Tripeak Building & Remodeling, we offer high quality services in Southern NH, our main focus is being able to complete a quality job that will last for many years to come. We use high quality products that will serve their purpose and last, with proper prep and install techniques, we do not take shortcuts. These practices leave for a neat, clean, and professional completed project that you will not have to worry about. Customer satisfaction is very important to us, we will work and coordinate until the customer is content and happy with the finished result of the project, exactly how they imagined it.

"Cody Moniz did excellent work in totally remodeling 2 bedrooms and and a bathroom in a lakeside cabin that was about 70 years old, He rebuilt walls, installed doors and floors. He was always there when he said said and completed everything in the promised timeline, for a very reasonable price. Cody even made some material and design suggestion that greatly improved the project outcome. I would recommend Cody for any project inside or exterior."

James W on May 2023

Here at Tripeak Building & Remodeling, we offer high quality services in Southern NH, our main focus is being able to complete a quality job that will last for many years to come. We use high quality products that will serve their purpose and last, with proper prep and install techniques, we do not take shortcuts. These practices leave for a neat, clean, and professional completed project that you will not have to worry about. Customer satisfaction is very important to us, we will work and coordinate until the customer is content and happy with the finished result of the project, exactly how they imagined it.

"Cody Moniz did excellent work in totally remodeling 2 bedrooms and and a bathroom in a lakeside cabin that was about 70 years old, He rebuilt walls, installed doors and floors. He was always there when he said said and completed everything in the promised timeline, for a very reasonable price. Cody even made some material and design suggestion that greatly improved the project outcome. I would recommend Cody for any project inside or exterior."

James W on May 2023

Avatar for Berube and Son Construction LLC

Berube and Son Construction LLC

5.00(
9
)
•Approved Pro

Berube and Son Construction LLC

5.00(
9
)
•Approved Pro
1 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I hired a local company to do a complete bathroom renovation for me. 3/4 of the way through the job, the workers for that company left my job for an emergency at another job. My renovation came to a stand still. Justin from Berube & Sons was called in last minute to do my drywall work. He arrived the very next day and worked both Friday and Saturday to do the job. He not only “saved the day” and got my bathroom done on schedule, but he was also clean and professional. His work was excellent and he was very pleasant to deal with. I won’t hesitate to to call him directly for any future jobs. "

Lisa S on November 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I hired a local company to do a complete bathroom renovation for me. 3/4 of the way through the job, the workers for that company left my job for an emergency at another job. My renovation came to a stand still. Justin from Berube & Sons was called in last minute to do my drywall work. He arrived the very next day and worked both Friday and Saturday to do the job. He not only “saved the day” and got my bathroom done on schedule, but he was also clean and professional. His work was excellent and he was very pleasant to deal with. I won’t hesitate to to call him directly for any future jobs. "

Lisa S on November 2025

Avatar for KATS Construction & Remodel, LLC

KATS Construction & Remodel, LLC

4.90(
25
)
•Approved Pro

KATS Construction & Remodel, LLC

4.90(
25
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
48 local quotes requested

KATS Construction & Remodel, LLC has been remodeling homes all around New Hampshire for years! From kitchens to baths, our experts know exactly how to create the look you are going for. Whether it needs a new paint job or a full demolition, our crew can do it all! Give us a call today for your free quote!

"Tom and his team rebuilt our whole kitchen they were very timely and were very professional did everything I asked for I would recommend them to do any construction job"

thomas s on September 2022

KATS Construction & Remodel, LLC has been remodeling homes all around New Hampshire for years! From kitchens to baths, our experts know exactly how to create the look you are going for. Whether it needs a new paint job or a full demolition, our crew can do it all! Give us a call today for your free quote!

"Tom and his team rebuilt our whole kitchen they were very timely and were very professional did everything I asked for I would recommend them to do any construction job"

thomas s on September 2022

Ayotte Home Improvements

4.93(
67
)
•Approved Pro

Ayotte Home Improvements

4.93(
67
)
•Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
30 local quotes requested

Ayotte Home Improvements is a fully licensed and insured remodeling/construction company. We offer free estimates and years of experience.Take a look at our website for some of our past projects.

"Bob was great- this was our first renovation as new homeowners and he helped us through the process, answering all of our questions and listening to what we wanted. We absolutely love the end result!"

John A on January 2025

Ayotte Home Improvements is a fully licensed and insured remodeling/construction company. We offer free estimates and years of experience.Take a look at our website for some of our past projects.

"Bob was great- this was our first renovation as new homeowners and he helped us through the process, answering all of our questions and listening to what we wanted. We absolutely love the end result!"

John A on January 2025

Avatar for Innovative Renovations

Innovative Renovations

5.00(
2
)
•Approved Pro

Innovative Renovations

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

At Tim McCusker Innovative Renovations, we take great pride in our experience, expertise, quality and customer service that we provide to meet the needs of all our clients. It is our mission to provide excellent workmanship, jobsite cleanliness, and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our clients, 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. Over 40 years of experience in all phases of construction. Count on us for complete home renovations, kitchen and bath renovations, home additions and dormers, custom built-ins and cabinets, interior and exterior trim, windows, doors and siding.

"I have owned my construction company in the Seacoast for 40 years and Tim is by far one of the more accomplished carpenters I have come across. He does first quality work with framing to finish work and has done custom cabinets for me that I could not be happier with. He is very reliable and always shows up on time and his cost are very competitive with the industry standards."

butch R on April 2025

At Tim McCusker Innovative Renovations, we take great pride in our experience, expertise, quality and customer service that we provide to meet the needs of all our clients. It is our mission to provide excellent workmanship, jobsite cleanliness, and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our clients, 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. Over 40 years of experience in all phases of construction. Count on us for complete home renovations, kitchen and bath renovations, home additions and dormers, custom built-ins and cabinets, interior and exterior trim, windows, doors and siding.

"I have owned my construction company in the Seacoast for 40 years and Tim is by far one of the more accomplished carpenters I have come across. He does first quality work with framing to finish work and has done custom cabinets for me that I could not be happier with. He is very reliable and always shows up on time and his cost are very competitive with the industry standards."

butch R on April 2025

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FAQs for basement remodeling projects in Londonderry, 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 Londonderry, NH homeowners’ guide to basement remodelings

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

See all articles