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Find Basement remodelers in Portland

Avatar for Westward Renovation LLC

Westward Renovation LLC

4.50(
8
)
Approved Pro

Westward Renovation LLC

4.50(
8
)
Approved Pro
Customers say: Quick response
35 local quotes requested
11 years of experience

Our processes are tailored to meet the unique demands of each individual project. Happy clients are the most rewarding part of this work and our goal is to make the construction experience as enjoyable as the final product.  At Westward Renovation we promise to arrive on time, communicate clearly and honestly, treat you and your home with respect, provide a realistic schedule, complete the work on time, and leave your home cleaner than when we arrived with our professional final clean service. Only after we fully understand the vision and goals for your project will we provide you with a detailed custom proposal to bring your dream space to reality. We only partner with professionals that share our commitment to quality and service and that keeps us a step above the competition. We look forward to earning your business!

"Working with Westward Renovations was such a joy. I met with 8 contracting companies and I chose them because Logan saw my vision and told he could make it happen. My project started in September and they were done within 3 months. I am so glad that I went with them. They made my dream come true. What an awesome team. I will definitely recommend them for future home projects. "

Cady M on December 2025

Our processes are tailored to meet the unique demands of each individual project. Happy clients are the most rewarding part of this work and our goal is to make the construction experience as enjoyable as the final product.  At Westward Renovation we promise to arrive on time, communicate clearly and honestly, treat you and your home with respect, provide a realistic schedule, complete the work on time, and leave your home cleaner than when we arrived with our professional final clean service. Only after we fully understand the vision and goals for your project will we provide you with a detailed custom proposal to bring your dream space to reality. We only partner with professionals that share our commitment to quality and service and that keeps us a step above the competition. We look forward to earning your business!

"Working with Westward Renovations was such a joy. I met with 8 contracting companies and I chose them because Logan saw my vision and told he could make it happen. My project started in September and they were done within 3 months. I am so glad that I went with them. They made my dream come true. What an awesome team. I will definitely recommend them for future home projects. "

Cady M on December 2025


Avatar for F.J.S. Construction

F.J.S. Construction

4.90(
5
)
Approved Pro

F.J.S. Construction

4.90(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

I moved from a farm into a new house in a small town. They built four more homes next to our house and I told my parents I want to do that when I grow up. For the last 33 years I’ve been doing just that . I guess you can say “ I’m living my dream “. I do my best to listen to my clients and help them with the vision they gave for their. Communication from start to finish.

"I would highly recommend them!"

Jim H on March 2023

I moved from a farm into a new house in a small town. They built four more homes next to our house and I told my parents I want to do that when I grow up. For the last 33 years I’ve been doing just that . I guess you can say “ I’m living my dream “. I do my best to listen to my clients and help them with the vision they gave for their. Communication from start to finish.

"I would highly recommend them!"

Jim H on March 2023


Avatar for RAG Enterprises, LLC

RAG Enterprises, LLC

5.00(
2
)
Approved Pro

RAG Enterprises, LLC

5.00(
2
)
Approved Pro
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 top-flight! He is the first person I will contact the next time I need _any_ work done around the house. Polished. Professional. Creative Problem Solver. A skill set both deep and wide. And... great people skills, enjoyable to work with! "

Paul H on May 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 top-flight! He is the first person I will contact the next time I need _any_ work done around the house. Polished. Professional. Creative Problem Solver. A skill set both deep and wide. And... great people skills, enjoyable to work with! "

Paul H on May 2025


Avatar for A M Leech Construction, LLC

A M Leech Construction, LLC

4.99(
72
)
Approved Pro

A M Leech Construction, LLC

4.99(
72
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
11 local quotes requested

My name is Adrian Leech, and I have over 30-years experience as a carpenter. Over the years I've created a solid reputation for quality and service. A. M. Leech Construction is a small residential remodeling and deck building company specializing in adding, converting and remodeling living space. I'm licensed in Oregon and Washington, servicing East Portland, Gresham, Clackamas County, Lake Oswego, West Linn, and Vancouver. My crew and I provide workmanship for the residential and small commercial markets. In need of a bath or kitchen remodel, an addition, basement remodel, composite deck or any other remodel or construction project? Look no further! Please call or email to arrange for a free consultation and price quote.

"Adrian, who is the owner of this company paid personal attention to the project. There were ups and downs in the project as all projects are but he paid personal attention to make sure that everything was brought to a satisfactory outcome. I would use this company again. Very conscientious."

Phil S on December 2025

My name is Adrian Leech, and I have over 30-years experience as a carpenter. Over the years I've created a solid reputation for quality and service. A. M. Leech Construction is a small residential remodeling and deck building company specializing in adding, converting and remodeling living space. I'm licensed in Oregon and Washington, servicing East Portland, Gresham, Clackamas County, Lake Oswego, West Linn, and Vancouver. My crew and I provide workmanship for the residential and small commercial markets. In need of a bath or kitchen remodel, an addition, basement remodel, composite deck or any other remodel or construction project? Look no further! Please call or email to arrange for a free consultation and price quote.

"Adrian, who is the owner of this company paid personal attention to the project. There were ups and downs in the project as all projects are but he paid personal attention to make sure that everything was brought to a satisfactory outcome. I would use this company again. Very conscientious."

Phil S on December 2025


Avatar for MHM Construction, LLC

MHM Construction, LLC

5.00(
3
)
Approved Pro

MHM Construction, LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"They were very easy to work with and very kind I got exactly what I asked for. They pay close attention to detail. Theyâ  re very clean and thorough! They do everything to please the client"

Luis S on June 2023

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"They were very easy to work with and very kind I got exactly what I asked for. They pay close attention to detail. Theyâ  re very clean and thorough! They do everything to please the client"

Luis S on June 2023


Mac Construction & Development LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Mac Construction & Development LLC

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

We are 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 services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

We are 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 services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!


Obrien Clan Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Obrien Clan Construction

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

Obrien Clan Construction 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. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

Obrien Clan Construction 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. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.


Avatar for McFadin Design/Build LLC

McFadin Design/Build LLC

5.00(
3
)
Approved Pro

McFadin Design/Build LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We are a small, family oriented, second generation design/ build firm located in NE Portland. We believe the simplest solutions to problems are usually the best. We operate in and foster an environment of mutual respect. Respect for each other, for our clients, and for the the world we live in. We are here for a simple reason: To do good work.

"Nice guy and easy to work with. Came up with different ideas, and saved me money. Very professional, available, responsible, and reliable. Did the job in a timely manner, and absolutely finished it when he was supposed to."

Sonia F on December 2020

We are a small, family oriented, second generation design/ build firm located in NE Portland. We believe the simplest solutions to problems are usually the best. We operate in and foster an environment of mutual respect. Respect for each other, for our clients, and for the the world we live in. We are here for a simple reason: To do good work.

"Nice guy and easy to work with. Came up with different ideas, and saved me money. Very professional, available, responsible, and reliable. Did the job in a timely manner, and absolutely finished it when he was supposed to."

Sonia F on December 2020


Avatar for TIMBERLINE CONSTRUCTION CONCEPTS LLC

TIMBERLINE CONSTRUCTION CONCEPTS LLC

5.00(
10
)
Approved Pro

TIMBERLINE CONSTRUCTION CONCEPTS LLC

5.00(
10
)
Approved Pro
3 years of experience
Free onsite estimate

Timberline Construction Concepts 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. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Very knowledgeable and professional during the whole job. Would recommend them to anyone that needs work done. Fair price and hard workers. A pleasure to meet them."

Dennis B on December 2025

Timberline Construction Concepts 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. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Very knowledgeable and professional during the whole job. Would recommend them to anyone that needs work done. Fair price and hard workers. A pleasure to meet them."

Dennis B on December 2025


Avatar for Millennium Builders LLC

Millennium Builders LLC

5.00(
3
)
Approved Pro

Millennium Builders LLC

5.00(
3
)
Approved Pro
Super Service Award
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Millennium Builders LLC is a trusted, licensed contractor based in Oregon with over 20 years of experience in the construction industry. We specialize in delivering top-quality work with a focus on craftmanship, reliability, and efficiency. Our team is dedicated to providing exceptional service and ensuring customer satisfaction on every project, big or small. With a reputation for quick response times and attention to detail, Millennium Builders stands out for its ability to meet deadlines without compromising on quality. Whether you're planning a new construction, remodel, or renovation, you can count on our expertise and commitment to excellence. Trust us to bring your vision to life with the highest standards of construction and professionalism.

"Phil and his crew always do a great job for us. His attention to detail is second to none. Very professional and always has great interaction with our clients."

Stn Crk Mike Short S on March 2025

Millennium Builders LLC is a trusted, licensed contractor based in Oregon with over 20 years of experience in the construction industry. We specialize in delivering top-quality work with a focus on craftmanship, reliability, and efficiency. Our team is dedicated to providing exceptional service and ensuring customer satisfaction on every project, big or small. With a reputation for quick response times and attention to detail, Millennium Builders stands out for its ability to meet deadlines without compromising on quality. Whether you're planning a new construction, remodel, or renovation, you can count on our expertise and commitment to excellence. Trust us to bring your vision to life with the highest standards of construction and professionalism.

"Phil and his crew always do a great job for us. His attention to detail is second to none. Very professional and always has great interaction with our clients."

Stn Crk Mike Short S on March 2025

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FAQs for basement remodeling projects in Portland, OR

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, OR homeowners’ guide to basement remodelings

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