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Find Basement remodelers in Portland

First Chair Carpentry, LLC

52 Weymouth St
4.83(
3
)
Approved Pro

First Chair Carpentry, LLC

52 Weymouth St
4.83(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

As a skilled, licensed, and insured general contractor in AREA, First Chair Carpentry, LLC is at your service for projects large and small. From quick household fixes to major property renovations, BUSINESS provides thorough, efficient service every step of the way. All you have to do is sit back, relax, and enjoy the end results.

"I love how communicative they are. It has been a great experience. Good value."

Mitch F on December 2017

As a skilled, licensed, and insured general contractor in AREA, First Chair Carpentry, LLC is at your service for projects large and small. From quick household fixes to major property renovations, BUSINESS provides thorough, efficient service every step of the way. All you have to do is sit back, relax, and enjoy the end results.

"I love how communicative they are. It has been a great experience. Good value."

Mitch F on December 2017


Williams Construction, New Construction & Remodeling, Inc.

266 Carding Machine Rd.
3.50(
3
)
Approved Pro

Williams Construction, New Construction & Remodeling, Inc.

266 Carding Machine Rd.
3.50(
3
)
Approved Pro
20 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 start to 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.

"They don?t answer messages through Angi and they don?t answer the phone. No voicemail either."

Christine F on March 2022

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 start to 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.

"They don?t answer messages through Angi and they don?t answer the phone. No voicemail either."

Christine F on March 2022


Avatar for G.A. Doughty Construction

G.A. Doughty Construction

178 Augusta Rd
3.77(
13
)
Approved Pro

G.A. Doughty Construction

178 Augusta Rd
3.77(
13
)
Approved Pro
65 local quotes requested
22 years of experience

G.A. Doughty Construction, we are without a doubt the best at what we do, and it always shows in our work. We take pride in our professionalism; our employees are always timely and dressed professionally. With over 19 years of experience in our trades, you can be confident that you are hiring the best company to provide all of your construction needs. We look forward to earning your business! Call us today for a quote! References available per request.

"We had a great experience working with G.A. Doughty Construction. From the start, their team was communicative, responsive, and collaborative—making sure we were involved and informed at every step. They helped us navigate and recover from a difficult prior experience, stepping in with professionalism and integrity to get the work done right. Their commitment to quality and transparency gave us real peace of mind, and we’re grateful for their expertise and support throughout the project."

Jared A on June 2025

G.A. Doughty Construction, we are without a doubt the best at what we do, and it always shows in our work. We take pride in our professionalism; our employees are always timely and dressed professionally. With over 19 years of experience in our trades, you can be confident that you are hiring the best company to provide all of your construction needs. We look forward to earning your business! Call us today for a quote! References available per request.

"We had a great experience working with G.A. Doughty Construction. From the start, their team was communicative, responsive, and collaborative—making sure we were involved and informed at every step. They helped us navigate and recover from a difficult prior experience, stepping in with professionalism and integrity to get the work done right. Their commitment to quality and transparency gave us real peace of mind, and we’re grateful for their expertise and support throughout the project."

Jared A on June 2025


Knoth Construction

P.O. Box 10685
5.00(
2
)
Approved Pro

Knoth Construction

P.O. Box 10685
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

At Knoth Construction we make dreams come true. With over 20 years of experience, this phrase has become more than a catchy slogan. It's simply the way we do business. Knoth Construction does everything from additions, remodels to tile and painting to small commercial build outs. We offer quality, professionalism and competitive pricing for every job, regardless of project size. Customer satisfaction is our primary goal. Knoth Construction looks forward to making your dream a reality.

"He does fantastic work all around. -Elaine"

Elaine . on December 2019

At Knoth Construction we make dreams come true. With over 20 years of experience, this phrase has become more than a catchy slogan. It's simply the way we do business. Knoth Construction does everything from additions, remodels to tile and painting to small commercial build outs. We offer quality, professionalism and competitive pricing for every job, regardless of project size. Customer satisfaction is our primary goal. Knoth Construction looks forward to making your dream a reality.

"He does fantastic work all around. -Elaine"

Elaine . on December 2019


Merry and Son Construction

39 Pioneer St
5.00(
1
)
Approved Pro

Merry and Son Construction

39 Pioneer St
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

With over 12 years of experience in General Construction, Merry and Son Construction, is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"No comments."

Alyssa x on May 2021

With over 12 years of experience in General Construction, Merry and Son Construction, is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"No comments."

Alyssa x on May 2021


Avatar for Bavineau Enterprises

Bavineau Enterprises

8 Alder Street Apt. 2
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Bavineau Enterprises

8 Alder Street Apt. 2
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
20 years of experience
Free onsite estimate

Here at Bavineau Enterprises we have a main focus of quality over quantity. We are driven by integrity, good communication, and professionalism. With over 15 years of experience there is no job that we shy away from when it comes to your home project needs. Please call today for a free estimate we look forward to earning your life long business

Here at Bavineau Enterprises we have a main focus of quality over quantity. We are driven by integrity, good communication, and professionalism. With over 15 years of experience there is no job that we shy away from when it comes to your home project needs. Please call today for a free estimate we look forward to earning your life long business


Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

60 Shawmut Road
4.83(
331
)
Approved Pro

Owens Corning Basement Finishing System

60 Shawmut Road
4.83(
331
)
Approved Pro
Super Service Award
Customers say: True professional
139 local quotes requested
35 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.

"Very happy with the basement. Work actually started 2-3 weeks earlier than expected. We were told the job would last about 4-5 weeks. Basement work was completed in about 4 weeks. Very professional. No worries about whether the plumber or electrician would be available. We discussed small changes to the layout (e.g., where the sink in the bathroom would be located) and everyone was very accommodating."

Thomas H on November 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.

"Very happy with the basement. Work actually started 2-3 weeks earlier than expected. We were told the job would last about 4-5 weeks. Basement work was completed in about 4 weeks. Very professional. No worries about whether the plumber or electrician would be available. We discussed small changes to the layout (e.g., where the sink in the bathroom would be located) and everyone was very accommodating."

Thomas H on November 2025


Avatar for East Coast Vinyl LLC

East Coast Vinyl LLC

18 Prospect St
4.67(
6
)
Approved Pro

East Coast Vinyl LLC

18 Prospect St
4.67(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 local quotes requested

we are exterior remodeling specialist!! we focus on home restorations and Updates we specialize in VINYL SIDING with Azec trim. we Install NEW WINDOWS and REPLACEMENT WINDOWS. ASK US ABOUT?? FREE GUTTERS I have 30+ yrs experience in home remodeling and repair. I build decks kitchens bathrooms ceramic tile work and so on.

"David was wonderful, he was great at explaining his process and the overall time for the project. I would/will be hiring him again in the future."

Andrew L on March 2025

we are exterior remodeling specialist!! we focus on home restorations and Updates we specialize in VINYL SIDING with Azec trim. we Install NEW WINDOWS and REPLACEMENT WINDOWS. ASK US ABOUT?? FREE GUTTERS I have 30+ yrs experience in home remodeling and repair. I build decks kitchens bathrooms ceramic tile work and so on.

"David was wonderful, he was great at explaining his process and the overall time for the project. I would/will be hiring him again in the future."

Andrew L on March 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
12 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


Pleasantdale Construction, LLC

175 Elm Street
5.00(
2
)
Approved Pro

Pleasantdale Construction, LLC

175 Elm Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

With over 35 years of experience, Pleasantdale Construction, LLC, is 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. We are watchful of our customers' interests and make their concerns the basis of our business.

"Bob is the best contractors I have ever worked with."

Steve H on August 2018

With over 35 years of experience, Pleasantdale Construction, LLC, is 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. We are watchful of our customers' interests and make their concerns the basis of our business.

"Bob is the best contractors I have ever worked with."

Steve H on August 2018

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FAQs for basement remodeling projects in Portland, ME

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 Portland, ME homeowners’ guide to basement remodelings

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