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Find Basement remodelers in Portland

First Chair Carpentry, LLC

4.83(
3
)
Approved Pro

First Chair Carpentry, LLC

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.

3.50(
3
)
Approved Pro

Williams Construction, New Construction & Remodeling, Inc.

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


Knoth Construction

5.00(
2
)
Approved Pro

Knoth Construction

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

5.00(
1
)
Approved Pro

Merry and Son Construction

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

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Bavineau Enterprises

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

4.83(
334
)
Approved Pro

Owens Corning Basement Finishing System

4.83(
334
)
Approved Pro
Super Service Award
Customers say: True professional
121 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.

"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 APEX Builders LLC

APEX Builders LLC

5.00(
2
)
Approved Pro

APEX Builders LLC

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

Our mission at APEX Builders LLC is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! APEX Builders LLC stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I hired APEX builders for an additional bathroom at one of my properties and I could not be happier. The bathroom came out beautiful. Billy was super easy to work with and his communication was the best part. I always knew what was going on, where we were in the process and what was next. Highly recommended for any project. I will be using them again."

Bill S on January 2025

Our mission at APEX Builders LLC is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! APEX Builders LLC stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I hired APEX builders for an additional bathroom at one of my properties and I could not be happier. The bathroom came out beautiful. Billy was super easy to work with and his communication was the best part. I always knew what was going on, where we were in the process and what was next. Highly recommended for any project. I will be using them again."

Bill S on January 2025


Avatar for Total Basement Finishing

Total Basement Finishing

4.00(
5
)
Approved Pro

Total Basement Finishing

4.00(
5
)
Approved Pro
Customers say: Quick response
11 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


Avatar for Black Bear Construction, LLC

Black Bear Construction, LLC

4.69(
16
)
Approved Pro

Black Bear Construction, LLC

4.69(
16
)
Approved Pro
Customers say: Quick response
41 local quotes requested
4 years of experience

Welcome to Black Bear Construction LLC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! We are a home repair and renovation company. Also offering demo and waste removal

"Kyle from Black Bear Construction has completed a wide range of projects for us since we moved into our home. His work includes remodeling the ceilings and floors, updating the main staircase, adding a new front door, designing and building a front porch, and, most recently, creating a small half-bathroom in our basement. We have been consistently impressed with both the quality of his craftsmanship and his professionalism. Above all, Kyle communicates clearly, listens thoughtfully to his clients’ concerns, and approaches every project with honesty and kindness. He is truly a pleasure to work with."

Elaine M on December 2025

Welcome to Black Bear Construction LLC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! We are a home repair and renovation company. Also offering demo and waste removal

"Kyle from Black Bear Construction has completed a wide range of projects for us since we moved into our home. His work includes remodeling the ceilings and floors, updating the main staircase, adding a new front door, designing and building a front porch, and, most recently, creating a small half-bathroom in our basement. We have been consistently impressed with both the quality of his craftsmanship and his professionalism. Above all, Kyle communicates clearly, listens thoughtfully to his clients’ concerns, and approaches every project with honesty and kindness. He is truly a pleasure to work with."

Elaine M on December 2025


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
5 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

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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.