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Find Basement remodelers in Portland

Avatar for Backyard Blueprint

Backyard Blueprint

5.00(
7
)
Approved Pro

Backyard Blueprint

5.00(
7
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

Backyard Blueprint is a family-owned business established in Portland OR. We’ve been in the Portland area for 30 years. The challenge of keeping our family close, both aging parents and our young adult children, is an experience we’re familiar with ourselves. Our in-house construction team has worked in Portland and surrounding areas for the past 20 years. They’ve delivered hundreds of single-family and multi-generational housing options to the community. We have partnerships within nearly every trade in the market. We’re proud members of the Home Building Association of Greater Portland and the National Association of Home Builders. Our team is diverse and determined, and we believe in the value of continuous learning. We enjoy engaging with our prospective customers to understand your reasons for considering an ADU for your property. We believe what separates us as a company is the humility our team offers. We are just like you. We strive to fully understand your circumstances, and tailor our expertise specifically for you and your family’s needs. Contact us today for your FREE estimate!

"Matthew Bruce exceeded our expectations. Our 92-year-old dad fell while using the bathroom and injured himself. We needed an immediate response to make the bathroom safe. Matthew responded to my request very quickly. He asked questions about the situation that showed he had the expertise we needed. He came to the house within a day of agreeing to perform the work and completed the most urgent task that day. He needed other tools to complete the installation of the grab bar drilled into the shower tiles, so he had to return at a later time. He communicated clearly when he could return and completed the task. Additionally, he cleaned up after his work and was pleasant to workMatthew Bruce exceeded our expectations. Our 92-year-old dad fell while using the bathroom and injured himself, so we needed an immediate response to make the bathroom safe. Matthew quickly responded to my request, asking detailed questions that demonstrated his expertise. He came to our house within a day of agreeing to do the work and completed the most urgent task that same day. To install a grab bar drilled into the shower tiles, he needed additional tools, so he had to return later to finish the job. He communicated clearly about when he could come back and completed the task efficiently. Furthermore, he cleaned up after his work and was pleasant to work with. with."

Sandra M on September 2025

Backyard Blueprint is a family-owned business established in Portland OR. We’ve been in the Portland area for 30 years. The challenge of keeping our family close, both aging parents and our young adult children, is an experience we’re familiar with ourselves. Our in-house construction team has worked in Portland and surrounding areas for the past 20 years. They’ve delivered hundreds of single-family and multi-generational housing options to the community. We have partnerships within nearly every trade in the market. We’re proud members of the Home Building Association of Greater Portland and the National Association of Home Builders. Our team is diverse and determined, and we believe in the value of continuous learning. We enjoy engaging with our prospective customers to understand your reasons for considering an ADU for your property. We believe what separates us as a company is the humility our team offers. We are just like you. We strive to fully understand your circumstances, and tailor our expertise specifically for you and your family’s needs. Contact us today for your FREE estimate!

"Matthew Bruce exceeded our expectations. Our 92-year-old dad fell while using the bathroom and injured himself. We needed an immediate response to make the bathroom safe. Matthew responded to my request very quickly. He asked questions about the situation that showed he had the expertise we needed. He came to the house within a day of agreeing to perform the work and completed the most urgent task that day. He needed other tools to complete the installation of the grab bar drilled into the shower tiles, so he had to return at a later time. He communicated clearly when he could return and completed the task. Additionally, he cleaned up after his work and was pleasant to workMatthew Bruce exceeded our expectations. Our 92-year-old dad fell while using the bathroom and injured himself, so we needed an immediate response to make the bathroom safe. Matthew quickly responded to my request, asking detailed questions that demonstrated his expertise. He came to our house within a day of agreeing to do the work and completed the most urgent task that same day. To install a grab bar drilled into the shower tiles, he needed additional tools, so he had to return later to finish the job. He communicated clearly about when he could come back and completed the task efficiently. Furthermore, he cleaned up after his work and was pleasant to work with. with."

Sandra M on September 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
20 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
3 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 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
6 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


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
24 local quotes requested
12 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


Mac Construction & Development LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Mac Construction & Development LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
4 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
2 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 North Creek Construction, LLC

North Creek Construction, LLC

5.00(
39
)
Approved Pro

North Creek Construction, LLC

5.00(
39
)
Approved Pro
Super Service Award
Customers say: True professional
4 years of experience
Free onsite estimate

North Creek 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. Above all, we are watchful of our customers interests and make their concerns the basis of our business.

"Dave was professional and prompt. He asked questions and gave honest feedback and shared his construction knowledge. His prices were fair and the job was done quickly. He wasn’t happy until the job was done right and that I was satisfied. I really appreciated his integrity & work ethic"

Mary D on July 2025

North Creek 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. Above all, we are watchful of our customers interests and make their concerns the basis of our business.

"Dave was professional and prompt. He asked questions and gave honest feedback and shared his construction knowledge. His prices were fair and the job was done quickly. He wasn’t happy until the job was done right and that I was satisfied. I really appreciated his integrity & work ethic"

Mary D on July 2025


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
26 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 Elm Construction Services, Inc.

Elm Construction Services, Inc.

4.33(
9
)
Approved Pro

Elm Construction Services, Inc.

4.33(
9
)
Approved Pro
Customers say: Quick response
800 local quotes requested
11 years of experience

Elm Construction Services INC 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.

"I just had Elm Construction Services replace the roof on our new home. I have to say, I’m really impressed. We went with asphalt shingles and they look beautiful! What I loved most was how professional everyone was. The crew showed up on time, worked efficiently, and actually cleaned up better than I expected - you’d never know they were even here. They were also super patient with all my questions (and I had a lot!). The quality of their work is top-notch. You can tell they really care about doing things right, not just getting it done quickly. My neighbors have even commented on how great the roof looks. If you’re in the Lake Oswego or Portland area and need roofing work done, I’d definitely recommend giving Elm Construction Services a call. It’s such a relief to find a contractor you can trust who actually delivers on their promises!"

Karen O on January 2026

Elm Construction Services INC 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.

"I just had Elm Construction Services replace the roof on our new home. I have to say, I’m really impressed. We went with asphalt shingles and they look beautiful! What I loved most was how professional everyone was. The crew showed up on time, worked efficiently, and actually cleaned up better than I expected - you’d never know they were even here. They were also super patient with all my questions (and I had a lot!). The quality of their work is top-notch. You can tell they really care about doing things right, not just getting it done quickly. My neighbors have even commented on how great the roof looks. If you’re in the Lake Oswego or Portland area and need roofing work done, I’d definitely recommend giving Elm Construction Services a call. It’s such a relief to find a contractor you can trust who actually delivers on their promises!"

Karen O on January 2026

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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.