Top-rated basement remodelers.

Get matched with top basement remodelers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Basement remodelers in Portsmouth

Brunson Construction
213 Locust Street
5.00(
2
)
Approved Pro
Brunson Construction
213 Locust Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Dana Brunson is not only a craftsman at his trade but he stays on top of new technologies people need in their homes."

Bill R on January 2020

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Dana Brunson is not only a craftsman at his trade but he stays on top of new technologies people need in their homes."

Bill R on January 2020


JDL Building & Remodeling of New England, LLC
33 Palm Drive
4.89(
11
)
Approved Pro
JDL Building & Remodeling of New England, LLC
33 Palm Drive
4.89(
11
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 years of experience

We are a full service General Contracting Company who can manage your project from conception to completion. This includes design, permitting and construction. Athough we specialize in providing turn-key services, we can also be contracted to perform any trade service or scope or work. Jason Lajeunesse, owner of JDL Building & Remodeling of New England, LLC, is a second generation building contactor with over 10 years of general contracting and trade experience. This experience and our strong Estimating and Project Planning Skills allow us to deliver our projects on budget and schedule.

"If you are looking for someone who is really going to work with you then JDL is for you. Jason tries extremely hard to listen to all requests and plans you might have. I would call him again if we had another project going on."

James C w on August 2011

We are a full service General Contracting Company who can manage your project from conception to completion. This includes design, permitting and construction. Athough we specialize in providing turn-key services, we can also be contracted to perform any trade service or scope or work. Jason Lajeunesse, owner of JDL Building & Remodeling of New England, LLC, is a second generation building contactor with over 10 years of general contracting and trade experience. This experience and our strong Estimating and Project Planning Skills allow us to deliver our projects on budget and schedule.

"If you are looking for someone who is really going to work with you then JDL is for you. Jason tries extremely hard to listen to all requests and plans you might have. I would call him again if we had another project going on."

James C w on August 2011


Avatar for Jesse Wright Electrical and Solar, LLC
Jesse Wright Electrical and Solar, LLC
331 Main Street
4.83(
30
)
Approved Pro
Jesse Wright Electrical and Solar, LLC
331 Main Street
4.83(
30
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

At Jesse Wright Electrical and Solar, our priories are customer service and quality work. We pride ourselves on building lasting relationships with our clients. Call us for an estimate. We look forward to working with you!

"Very responsive and efficient"

Doug T on October 2023

At Jesse Wright Electrical and Solar, our priories are customer service and quality work. We pride ourselves on building lasting relationships with our clients. Call us for an estimate. We look forward to working with you!

"Very responsive and efficient"

Doug T on October 2023


Avatar for ACQ Home Improvement
ACQ Home Improvement
129 Edgewood Ave
4.94(
8
)
Approved Pro
ACQ Home Improvement
129 Edgewood Ave
4.94(
8
)
Approved Pro
Customers say: Quick response
25 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


Avatar for Envy Homes, LLC
Envy Homes, LLC
134 Dowboro Rd
4.75(
2
)
Approved Pro
Envy Homes, LLC
134 Dowboro Rd
4.75(
2
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 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 Innovative Renovations
Innovative Renovations
2 Gove Street
5.00(
2
)
Approved Pro
Innovative Renovations
2 Gove Street
5.00(
2
)
Approved Pro
25 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


Avatar for Lux Renovations, LLC
Lux Renovations, LLC
60 Shawmut Road
4.82(
323
)
Approved Pro
Lux Renovations, LLC
60 Shawmut Road
4.82(
323
)
Approved Pro
Super Service Award
Customers say: True professional
146 local quotes requested
35 years of experience

Lux Renovations, LLC 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 16 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.

"From start to finish the Lux / Owens Corning team was always very professional and caring. Their system is well tested, the install process efficient, quiet and clean. They handled all the inspections and kept everything moving along smoothly. I feel like I got the best refinished basement and I’m very happy with the results. MN"

Mint N on July 2025

Lux Renovations, LLC 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 16 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.

"From start to finish the Lux / Owens Corning team was always very professional and caring. Their system is well tested, the install process efficient, quiet and clean. They handled all the inspections and kept everything moving along smoothly. I feel like I got the best refinished basement and I’m very happy with the results. MN"

Mint N on July 2025


Aubrey & Son Home Improvement
35 Upham St Unit A
5.00(
15
)
Approved Pro
Aubrey & Son Home Improvement
35 Upham St Unit A
5.00(
15
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

We are committed to excellence in 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.

"Absolutely amazing workers. Fast, efficient, clean. They did an amazing job on my basement. Definitely 10 out of 10. Highly recommended. "

STEVE C on August 2025

We are committed to excellence in 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.

"Absolutely amazing workers. Fast, efficient, clean. They did an amazing job on my basement. Definitely 10 out of 10. Highly recommended. "

STEVE C on August 2025


Avatar for Remodel or Renew Home Improvement
Remodel or Renew Home Improvement
Based In
4.81(
255
)
Approved Pro
Remodel or Renew Home Improvement
Based In
4.81(
255
)
Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
1192 local quotes requested

Welcome to Remodel or Renew Home Improvement. We are committed to exceeding your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority.

"Signed contract on May 8 for deck build.On May 12 rep came to my office to collect deposit of apprx $13,000. He said project team meeting on Wed & would update me then on start date etc. On Fri May 16 I had to reach out to him. He wrote the team had met & materials were ordered. An hour later he wrote back that he was misinformed & that his boss was going to call me next week. Despite this, dep check cashed. On Mon 5. 20 rep wrote back that they had forgotten certain costs & to proceed it would be $8,000 more. Not a typo. $8,000 more. No apology. Ridiculous, contract rescinded. I wrote that he could return my deposit at my office just as he had collected it. On Wednesday the 21st I got a text from "Tom," presumably the owner/boss, saying he would "drop a check in the mail" to my address. Today is May 30th, Friday, and still no check. Check at a minimum should have been overnighted. They owe me interest not to mention the deposit to hire a contractor who will honor contract. Bad."

Jennifer M on May 2025

Welcome to Remodel or Renew Home Improvement. We are committed to exceeding your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority.

"Signed contract on May 8 for deck build.On May 12 rep came to my office to collect deposit of apprx $13,000. He said project team meeting on Wed & would update me then on start date etc. On Fri May 16 I had to reach out to him. He wrote the team had met & materials were ordered. An hour later he wrote back that he was misinformed & that his boss was going to call me next week. Despite this, dep check cashed. On Mon 5. 20 rep wrote back that they had forgotten certain costs & to proceed it would be $8,000 more. Not a typo. $8,000 more. No apology. Ridiculous, contract rescinded. I wrote that he could return my deposit at my office just as he had collected it. On Wednesday the 21st I got a text from "Tom," presumably the owner/boss, saying he would "drop a check in the mail" to my address. Today is May 30th, Friday, and still no check. Check at a minimum should have been overnighted. They owe me interest not to mention the deposit to hire a contractor who will honor contract. Bad."

Jennifer M on May 2025


Avatar for Total Basement Finishing
Total Basement Finishing
7 Red Roof Lane, Unit 5
4.00(
5
)
Approved Pro
Total Basement Finishing
7 Red Roof Lane, Unit 5
4.00(
5
)
Approved Pro
Customers say: Quick response
14 local quotes requested
36 years of experience

Finishing your basement with Total Basement Finishing, A Blackdog Affiliate adds value and comfort to your home. We have over 30 years of remodeling experience through our parent company, Blackdog Builders, a full-service remodeling company serving Lowell, Nashua, Lynn, and nearby. Total Basement Finishing, A Blackdog Affiliate implements the Total Basement Finishing system, comprised of proven, patented basement products guaranteed to last, and fully customizable to suit your vision. If you have basement- finishing needs, Total Basement Finishing, A Blackdog Affiliate has the tools, contractors, and customer service expertise to help!

"The company (Black Dog) was hired to expand the bathroom and part of the basement renovation. The project started in October 2020 and it is still going through May 2021 with an unclear restart date after 2 no shows. It was promised to finish by Christmas. The company used 2 different colors of grout in the same room. They are planning to come back and redo it, waiting for 2 months now. They do not want to spend time on fixes. Leakage around the shower was noted, they promised to contact the subcontractor, but I have not heard from them yet. There are minor things missing, would pay attention to their contract as they may not do things like shelves installation as originally discussed. They seemed professional on initial evaluation and at the beginning, but now I am regretting that I hired them."

A T on May 2021

Finishing your basement with Total Basement Finishing, A Blackdog Affiliate adds value and comfort to your home. We have over 30 years of remodeling experience through our parent company, Blackdog Builders, a full-service remodeling company serving Lowell, Nashua, Lynn, and nearby. Total Basement Finishing, A Blackdog Affiliate implements the Total Basement Finishing system, comprised of proven, patented basement products guaranteed to last, and fully customizable to suit your vision. If you have basement- finishing needs, Total Basement Finishing, A Blackdog Affiliate has the tools, contractors, and customer service expertise to help!

"The company (Black Dog) was hired to expand the bathroom and part of the basement renovation. The project started in October 2020 and it is still going through May 2021 with an unclear restart date after 2 no shows. It was promised to finish by Christmas. The company used 2 different colors of grout in the same room. They are planning to come back and redo it, waiting for 2 months now. They do not want to spend time on fixes. Leakage around the shower was noted, they promised to contact the subcontractor, but I have not heard from them yet. There are minor things missing, would pay attention to their contract as they may not do things like shelves installation as originally discussed. They seemed professional on initial evaluation and at the beginning, but now I am regretting that I hired them."

A T on May 2021

...
Showing 1-10 of 687
The Portsmouth, NH homeowners’ guide to basement remodelings
From average costs to expert advice, get all the answers you need to get your job done.
WOMAN EXERCISING IN HOME GYM
Jul 31, 2025
Jul 31, 2025
Budget for the cost to build a home gym based on factors such as project complexity, labor, gym type, flooring, electrical work, and more.
A view of a bathroom
Jul 29, 2025
Jul 29, 2025
Learn how much you’ll pay for a heated bathroom floor by exploring cost factors like the system type, labor rates, and permit fees.
A fancy black sink in a modern kitchen
Jul 29, 2025
Jul 29, 2025
Discover how much it costs to install limestone countertops, exploring how square footage, labor rates, and countertop design affect your total costs.
GAME ROOM IN BASEMENT
Jul 27, 2025
Jul 27, 2025
Learn about game room cost factors such as gaming consoles, sound systems, furnishings, installation labor, and remodeling vs. renovating.
A girl playing with teddy bear while smiling mother and grandmother at kitchen island
Mar 31, 2025
Mar 31, 2025
Explore how much quartzite countertops cost based on factors such as their size, location, design, finish, and labor rates.
Interior view of sunroom
Jul 9, 2025
Jul 9, 2025
Budget for sunroom addition costs based on factors such as room type, site prep, professional labor, features, permits, prefab vs. custom designs, and more.
Share project details to get started.