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Find Addition to existing structure builders 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
29 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


NW Craft Construction, LLC

5.00(
2
)
Approved Pro

NW Craft Construction, LLC

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

NW Craft Construction LLC is the premier home improvement company serving Lake Oswego and West Linn for over 12 years. Our #1 goal as a company is having complete customer satisfaction and there is no job that is too big or too small. If you want the job done right, call Scott today for a FREE estimate.

"He was great! Has great prices all around and does high quality work"

Brian B on November 2021

NW Craft Construction LLC is the premier home improvement company serving Lake Oswego and West Linn for over 12 years. Our #1 goal as a company is having complete customer satisfaction and there is no job that is too big or too small. If you want the job done right, call Scott today for a FREE estimate.

"He was great! Has great prices all around and does high quality work"

Brian B on November 2021


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 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


Levcor, LLC

3.93(
7
)
Approved Pro

Levcor, LLC

3.93(
7
)
Approved Pro
Customers say: Quality work
26 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. Call us today!

"Levcor has truly surpassed our expectations with its exceptional craftsmanship and commitment to bringing our vision of a dream kitchen to life. What began as a casual conversation a few years ago has now become a reality, thanks to their deep knowledge of kitchen functionality, and their ability to see what the end result can be throughout the design process. Their meticulous attention to detail and dedication helped us make the most of our space and create a design we could never have imagined. Working alongside Mike Sawyer has been a remarkable experience. He perfectly balanced our aspirations with our budget, making the entire process seamless. Mike's guidance empowered us to explore various design options, reimagining our space while staying within our scope and budget. His foresight even saved us a significant amount on kitchen cabinet costs due to an impending 30% lumber price increase. Despite their extensive experience, Levcor maintains the warmth and attentiveness of a family-run business. Their genuine care and responsiveness echoed throughout every interaction and made us feel valued and understood at every stage of the project. Furthermore, the professionalism displayed by both the business owner and the contractors was commendable. Their commitment to delivering outstanding results while maintaining efficiency was evident in the timely completion of our project. The attention to detail was truly exceptional, blending functionality with aesthetics to create a kitchen that not only met but exceeded our expectations, taking a disjointed space and helping redefine it. What started as a small, cramped kitchen, is now an expansive space for baking or a casual meal and a conversation. We went from a glass cooktop and single electric oven to a 5-burner gas range, double oven, and even a proofing/warming drawer. In summary, Mike's exemplary work ethic, expertise, and genuine care make him an outstanding contractor. For anyone considering a significant home renovation project, like a kitchen remodel, Levcor's proficiency and personal touch promise a transformative experience, resulting in a space you'll treasure for years to come. Trust me on this, as our remodeled kitchen has provided my wife with the perfect 9-foot island to launch her small gluten-free baking business."

Dan R on December 2023

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. Call us today!

"Levcor has truly surpassed our expectations with its exceptional craftsmanship and commitment to bringing our vision of a dream kitchen to life. What began as a casual conversation a few years ago has now become a reality, thanks to their deep knowledge of kitchen functionality, and their ability to see what the end result can be throughout the design process. Their meticulous attention to detail and dedication helped us make the most of our space and create a design we could never have imagined. Working alongside Mike Sawyer has been a remarkable experience. He perfectly balanced our aspirations with our budget, making the entire process seamless. Mike's guidance empowered us to explore various design options, reimagining our space while staying within our scope and budget. His foresight even saved us a significant amount on kitchen cabinet costs due to an impending 30% lumber price increase. Despite their extensive experience, Levcor maintains the warmth and attentiveness of a family-run business. Their genuine care and responsiveness echoed throughout every interaction and made us feel valued and understood at every stage of the project. Furthermore, the professionalism displayed by both the business owner and the contractors was commendable. Their commitment to delivering outstanding results while maintaining efficiency was evident in the timely completion of our project. The attention to detail was truly exceptional, blending functionality with aesthetics to create a kitchen that not only met but exceeded our expectations, taking a disjointed space and helping redefine it. What started as a small, cramped kitchen, is now an expansive space for baking or a casual meal and a conversation. We went from a glass cooktop and single electric oven to a 5-burner gas range, double oven, and even a proofing/warming drawer. In summary, Mike's exemplary work ethic, expertise, and genuine care make him an outstanding contractor. For anyone considering a significant home renovation project, like a kitchen remodel, Levcor's proficiency and personal touch promise a transformative experience, resulting in a space you'll treasure for years to come. Trust me on this, as our remodeled kitchen has provided my wife with the perfect 9-foot island to launch her small gluten-free baking business."

Dan R on December 2023


Avatar for Archer Construction and Remodel LLC

Archer Construction and Remodel LLC

5.00(
1
)
Approved Pro

Archer Construction and Remodel LLC

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

Archer Construction and Remodel 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.

"Chris and Chris were great. I had a complete kitchen remodel down to studs, lots of rot. New cabinets , paint , counters and floors . They were upfront about the total cost from ghe start and all of their work was very good. They worked around my work schedule. Love my new kitchen."

Delaina A on March 2025

Archer Construction and Remodel 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.

"Chris and Chris were great. I had a complete kitchen remodel down to studs, lots of rot. New cabinets , paint , counters and floors . They were upfront about the total cost from ghe start and all of their work was very good. They worked around my work schedule. Love my new kitchen."

Delaina A on March 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


"Awhile back I decided it was time to replace my old, crumbling shed. After doing a search on Angie’s List, I hired Gryphon Construction because they had good reviews. The process worked, and I must say that I’m super happy with the results I got. Not only were Akeem and company great to work with, they did an excellent job, and and I’m extremely happy with my new shed. (The only reason I’m not calling it “shop” is because I didn’t have power installed). It’s solid, has a locking door, as well as a window, and looks more like a tiny house than the shed that proceeded it. And while they were here, I also had them install a new track for a broken pocket door, which involved removing some dry wall to get at the work-out track. They did a great job on that, too, and I’m very happy with the remodel. I found them to be pleasant to do business with, as well as very conscientious, timely, and they have a strong sense of craftsmanship, which, after all, is what we all want in a good contractor. I highly recommend them!"

Roy M on October 2020

Gryphon Custom Home Builders and Remodeling LLC is your premier destination for comprehensive home remodeling and renovation services in Portland. We specialize in creating beautiful, functional, and personalized spaces that perfectly reflect your individual style and needs.

"Awhile back I decided it was time to replace my old, crumbling shed. After doing a search on Angie’s List, I hired Gryphon Construction because they had good reviews. The process worked, and I must say that I’m super happy with the results I got. Not only were Akeem and company great to work with, they did an excellent job, and and I’m extremely happy with my new shed. (The only reason I’m not calling it “shop” is because I didn’t have power installed). It’s solid, has a locking door, as well as a window, and looks more like a tiny house than the shed that proceeded it. And while they were here, I also had them install a new track for a broken pocket door, which involved removing some dry wall to get at the work-out track. They did a great job on that, too, and I’m very happy with the remodel. I found them to be pleasant to do business with, as well as very conscientious, timely, and they have a strong sense of craftsmanship, which, after all, is what we all want in a good contractor. I highly recommend them!"

Roy M on October 2020


Avatar for Century Renovation LLC

Century Renovation LLC

5.00(
4
)
Approved Pro

Century Renovation LLC

5.00(
4
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"My wife managed to accidentally run the car into the garage, the main post next to the garage door. And I also had some dry rot, under my kitchen window. Jose came right away. And gave me a reasonable bid. I am sure it was a small job, compared to the many he has done. But he and his great professionals really knew their stuff. And were so kind and helpful. I felt like a truly valued customer. I would not hesitate to use them again."

David R on June 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"My wife managed to accidentally run the car into the garage, the main post next to the garage door. And I also had some dry rot, under my kitchen window. Jose came right away. And gave me a reasonable bid. I am sure it was a small job, compared to the many he has done. But he and his great professionals really knew their stuff. And were so kind and helpful. I felt like a truly valued customer. I would not hesitate to use them again."

David R on June 2025


Avatar for Building Renovation Construction Solutions LLC

Building Renovation Construction Solutions LLC

5.00(
2
)
Approved Pro

Building Renovation Construction Solutions LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 local quotes requested

At Building Renovation Construction Solution, LLC we understand that every home or business has a project and every project has a budget. That’s why we offer a wide range of improvement solutions, no matter their budget. Our team of professionals works with each client to create a custom solution to fit their needs. We make sure to deliver the right results at the right price. With over 10 years of experience, we pride ourselves on offering our customers the highest quality work in the industry at the lowest possible price. We are a family owned and operated company that is committed to delivering quality painting and remodeling services in Oregon and Washington

"Great work, service and professional."

Indah R on November 2024

At Building Renovation Construction Solution, LLC we understand that every home or business has a project and every project has a budget. That’s why we offer a wide range of improvement solutions, no matter their budget. Our team of professionals works with each client to create a custom solution to fit their needs. We make sure to deliver the right results at the right price. With over 10 years of experience, we pride ourselves on offering our customers the highest quality work in the industry at the lowest possible price. We are a family owned and operated company that is committed to delivering quality painting and remodeling services in Oregon and Washington

"Great work, service and professional."

Indah R on November 2024

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FAQs for addition to existing structure building service projects in Portland, OR

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Portland, OR homeowners’ guide to addition to existing structure building services

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