Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Portland, OR

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Addition to existing structure builders in Portland

Avatar for Superior Building Concepts LLC
Superior Building Concepts LLC
4.9(
48
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"We would highly recommend Superior Building Concepts for your next project. After many over priced quotes, underpriced quotes with a wink and a nod to do this small job without permit, or contractors that stopped by to provide a quote that we never heard from again we received a referral from Angie's list for Superior Building Construction.  Stan came by, gave us a reasonable quote then followed up with a very professional and complete contract.  We signed with Superior and were pleasantly surprised with the continued professionalism.  We received compete drawings with architectural choices.  After our selection, it was put through the permit process.  At each point we received proper communication from Stan. Once construction began, Stan was there managing the subcontractors and working alongside.  We were delighted with each subcontractor Stan brought on board.  They were all punctual, courteous and cleaned up everything after their respective jobs were complete. With Covid supply shortages you can imagine some of the issues that arose, but with each roadblock Stan communicated with us and we worked out satisfactory work arounds. This remodel was a pleasant experience and Stan and his team made the difference. You can be confident in your project if you select Superior Building Concepts."
Before
After
After
Before
Before

+8

5 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Mt. Tabor Construction
Mt. Tabor Construction
4.7(
83
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 1985

Customers say: Super punctual

"Excellent job. Needed drywall repaired after the interior wall was opened up to facilitate plumbing work by another company. Easy to contact, showed up on time ready to work with the right equipment and supplies, described work to be done clearly, explained each step as it was done, was detail oriented and careful when completing the work, cleaned up the work area when done, end result was perfect. Quote was reasonable. I will definitely call this company again when I need work done."
Patio Cover
Bathroom remodel
Fencing
Bedroom Remodel
Built-in Shelving

+2

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Stellar Construction & Remodeling, LLC
Stellar Construction & Remodeling, LLC
4.8(
48
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Micah at Stellar Construction, was the only one of 5 fence installers that responded to my Angie’s list bid requests. I’m very glad he did because his company did a fantastic job replacing the back of my fence after a tree fell on part of it - total of 114’, tree only damaged 15’. At first, he estimated 4-6 weeks before he had space in his schedule, but they ended up having a last minute opening within the week. He finished the job, with full cleanup, in 2 days. We are VERY pleased with the results! Thank you Micah & your crew!! We will definitely use him in the future and recommend him to family/friends!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+54

Recommended by95%of homeowners
Avatar for Rutledge Construction, LLC
Rutledge Construction, LLC
4.9(
36
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"WE LOVE JOSH! We initially hired him to remodel a kitchen after another contractor botched the job. Josh fixed everything and got everything finished the way it should been in the first place! We have since hired him for two more jobs: pouring a concrete driveway extension for RV parking, and replacing some siding and painting the entire exterior of the house. Josh is meticulous and clearly takes pride in his work, he is super easy to work with! I HIGHLY recommend Josh, we will continue to hire him for all of our construction needs!"
Interior finishes
Custom kitchen
Interior finishes
Mango custom cabinets
Robusta floor

+165

Response time1 day
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for TimelessBuilders
TimelessBuilders
4.9(
14
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Overall Jay is excellent. He is responsive, always answers texts or phone calls quickly and generally does what he says he will do. Like all construction projects there were small issues along the way but Jay got on top of them and addressed them quickly. Site was clean during construction work, his subs/trades were all good, nice people, skilled workers who did excellent quality work. Overall this was done well and in an acceptable timeframe. I think generally construction could have been executed quicker, there were a few times when no-one was working at the house that could have shaved some time. But, given my extensive experience with construction Jay is one of the good ones ! His estimate was high but he came in well under it and within sight of what I expected things to cost. I will (I am) definately using him again..."
Additional Photos
Recommended by100%of homeowners
Avatar for Triple D Construction, Inc.
Triple D Construction, Inc.
5.0(
11
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

"Great team to work with, quality work, they go out of their way to please the customer. We were doing a living room and front deck expansion project and Paul and his team delivered a beautiful completed project and on budget. I have already recommended Triple D to two other friends for assisting them with their current projects."
Response time9 hrs
Response rate98%
12 neighbors recently requested a quote
Avatar for Clear Water Construction Services
Clear Water Construction Services
5.0(
17
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I was happy with the crew and the outcome of the project. Very personable and professional company that was able to fit my project in quickly and completed it within a day. Will definitely have them back out for a couple more projects I need to have done."
After 1
After #1
After 2
After #2
After 3

+16

Response time2 days
Response rate100%
Recommended by70%of homeowners
Avatar for Baurer Construction & Flooring
Baurer Construction & Flooring
4.9(
68
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 1987

Emergency services offered

Small jobs welcome

"This is the second project that we have hired JAW Construction for and we are very happy with how our remodel turned out. As this was a major kitchen, dining and living room remodel, which meant we were not going to be able to be in those rooms during the construction, John and I worked on the timeline to ensure it went as smoothly as possible. Before the project started, Mark from Amcraft Cabinets came out and measured and talked with us to determine how best to use the space. We came up with several cool options including a pull out spice rack and a lift for my mixer. Once the project began, John, Brian, the electricians Clint, Christian and Tyler and the plumber Mike were always on time, friendly, always available for questions and cleaned up after themselves. John estimated that the project would take six weeks and it ended up taking five weeks! While it was not fun to be without a kitchen, we are so happy with how it turned out, it made it all worth it. Everyone that has seen our remodeled areas or pictures of them are very impressed. I highly recommend hiring JAW Construction and we are already planning our next project with John."
Additional Photos
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Oltean Construction, LLC
Oltean Construction, LLC
4.7(
11
)
Addition to Existing Structure - Build

Serving Portland, OR and surrounding areas

Approved

In business since 2006

Free estimates

Customers say: Quick response

"We were so impressed with their team, work and value, we hired them two more times to perform additional remodel work. And we will be engaging them a fourth time within the next three months."
Laurelhurst Home Before Front View
Laurelhurst Home After Front View
Front Porch
Back View of Home
Living Room

+34

Response time4 days
10 neighbors recently requested a quote
Recommended by100%of homeowners
...
Showing 1-10 of 464
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.