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Verified Reviews for Earthquake Retrofitting pros in Tualatin, OR
*The Angi rating for Earthquake Retrofitting companies in Tualatin, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Earthquake Retrofitting needs.
*The HomeAdvisor rating for Earthquake Retrofitting companies in Tualatin, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Earthquake Retrofitting needs.
Last update on December 08, 2025
Find Earthquake retrofitting specialists in Tualatin

Secure Seismic, LLC
Secure Seismic, LLC
Our happy and satisfied customers recommend us to their friends and family all the time. We are proud of our reputation and we feel it has been well earned. We are also happy that we can help you feel good knowing that you are working with a reputable company that stands behind its products and services.
"I hired Secure Seismic to do a retrofit of my single story ranch built in the 1970s. Though I'm in the southern Willamette Valley and a ways from Portland, Daryl came down to give me a free estimate. Secure Seismic came in below their competitors and Daryl discusssd the plan with me in depth. Based upon the quality of the reviews, I hired Secure Seismic. They scheduled out within a couple of weeks. Johny the foreman kept me on the loop while they were at my house. They completed the job within a day and left the site clean. Pieces of drywall cut for access in the garage were thoughtfully replaced and will take little effort to clean up. Thanks for great work! I already sleep a little better knowing that my house will likely be okay when the big one hits."
Michael S on April 2024
Our happy and satisfied customers recommend us to their friends and family all the time. We are proud of our reputation and we feel it has been well earned. We are also happy that we can help you feel good knowing that you are working with a reputable company that stands behind its products and services.
"I hired Secure Seismic to do a retrofit of my single story ranch built in the 1970s. Though I'm in the southern Willamette Valley and a ways from Portland, Daryl came down to give me a free estimate. Secure Seismic came in below their competitors and Daryl discusssd the plan with me in depth. Based upon the quality of the reviews, I hired Secure Seismic. They scheduled out within a couple of weeks. Johny the foreman kept me on the loop while they were at my house. They completed the job within a day and left the site clean. Pieces of drywall cut for access in the garage were thoughtfully replaced and will take little effort to clean up. Thanks for great work! I already sleep a little better knowing that my house will likely be okay when the big one hits."
Michael S on April 2024

TerraFirma Foundation Systems
TerraFirma Foundation Systems
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Awesome crew. Work was done as promised and house is now secure and level."
JoAnn T on November 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Awesome crew. Work was done as promised and house is now secure and level."
JoAnn T on November 2025

Guardian Foundations and Construction
Guardian Foundations and Construction
At Guardian Foundations and Construction we embrace our roles as guardians, ensuring the safety and longevity of every structure entrusted to us. With a professional yet personable approach, we prioritize affordability without compromising quality. Rooted in our commitment to community, we foster meaningful connections and partnerships, fortifying foundations that support not only buildings but the lives they touch.
"If you want great service with people you can trust I recommend this company 100%"
Jess A on December 2024
At Guardian Foundations and Construction we embrace our roles as guardians, ensuring the safety and longevity of every structure entrusted to us. With a professional yet personable approach, we prioritize affordability without compromising quality. Rooted in our commitment to community, we foster meaningful connections and partnerships, fortifying foundations that support not only buildings but the lives they touch.
"If you want great service with people you can trust I recommend this company 100%"
Jess A on December 2024

Masonry Waterproofing & Drainage Masters LLC
Masonry Waterproofing & Drainage Masters LLC
We are a full service foundation and basement waterproofing company that performs a wide variety of repairs. We repair foundations, and lots of basements, fixing cracks, deterioration, resurfacing, and waterproofing. We do general masonry, including brick repair. We help with drainage problems, install French drains, as well as crawlspace drainage options to get water out from under homes. We repair chimneys, including tuck-pointing (new mortar), flashing, caps, dampers, and water sealing. .We also do all waterproofing as it relates to chimneys or foundations. Thank you for your consideration. Service area covered: All of the greater Portland area, as well as Southwest Washington. Additional email - [email protected]. Thank you and have a great day!
"We had an amazing experience with this company. We worked with Byron and he did a fantastic job. Very professional, knowledgeable and they were able to get the job done quickly. We had several quotes about our foundation but Byron was by far the most knowledgeable and we were so happy with the price. We are so happy with his work and will definitely be recommending him! We have reached out to him and he is always happy to help. So glad we chose this company!"
Jacqueline G on March 2025
We are a full service foundation and basement waterproofing company that performs a wide variety of repairs. We repair foundations, and lots of basements, fixing cracks, deterioration, resurfacing, and waterproofing. We do general masonry, including brick repair. We help with drainage problems, install French drains, as well as crawlspace drainage options to get water out from under homes. We repair chimneys, including tuck-pointing (new mortar), flashing, caps, dampers, and water sealing. .We also do all waterproofing as it relates to chimneys or foundations. Thank you for your consideration. Service area covered: All of the greater Portland area, as well as Southwest Washington. Additional email - [email protected]. Thank you and have a great day!
"We had an amazing experience with this company. We worked with Byron and he did a fantastic job. Very professional, knowledgeable and they were able to get the job done quickly. We had several quotes about our foundation but Byron was by far the most knowledgeable and we were so happy with the price. We are so happy with his work and will definitely be recommending him! We have reached out to him and he is always happy to help. So glad we chose this company!"
Jacqueline G on March 2025

NW Seismic
NW Seismic
We are a family-owned business whose mission is to create a more seismically prepared Portland. In designing and implementing a retrofit plan tailored specifically to our client's homes, we hope to shorten the recovery time for Portland after the next Cascadia subduction earthquake. Our work is calculated to strengthen homes to a degree in which homeowners can shelter in place after a moderate-to-high seismic event.
"NW Seismic made a very easy process for estimating and installation. Their drywall and plaster work was particularly well done. They also made some excellent recommendations regarding natural gas shut-offs and securing our water tank. Very professional from beginning to end. Would hire again anytime."
Mikel M on January 2022
We are a family-owned business whose mission is to create a more seismically prepared Portland. In designing and implementing a retrofit plan tailored specifically to our client's homes, we hope to shorten the recovery time for Portland after the next Cascadia subduction earthquake. Our work is calculated to strengthen homes to a degree in which homeowners can shelter in place after a moderate-to-high seismic event.
"NW Seismic made a very easy process for estimating and installation. Their drywall and plaster work was particularly well done. They also made some excellent recommendations regarding natural gas shut-offs and securing our water tank. Very professional from beginning to end. Would hire again anytime."
Mikel M on January 2022
Seismic Technologies
Seismic Technologies
Additional DBAs - Cottage Builders
Additional DBAs - Cottage Builders
WESTERN CONSTRUCTION SYSTEMS
WESTERN CONSTRUCTION SYSTEMS
Not a franchise, Family owned and operated since 1987. CCB# 94222, Serving the entire NW. FREE Estimates/ Inspections. Western Construction Systems LLC. is a locally owned, family owned and operated specialty construction company serving the entire north-west. WCS LLC. Prides its self in high quality work which is micro-managed by highly trained crews to ensure the highest level of confidant work. WCS LLC. Has also worked internationally in South America and currently has crews in Haiti. We have worked as far south as El Salvador and as far north as Alaska. We are able to attend to small residential job as well as large industrial projects.
"Western Construction Systems came out and did exceptional work at my house! They went above and beyond my expectations! They were friendly, professional, and hard-working! They took care of all the issues that I had concerns with and then some! Their prices were fair, especially for the high quality of work that they did! I know I pestered them with questions, but they were patient every single time. Before I contacted them to have the work done, I had high anxiety about the drainage issues. When they were finished, I felt confident that there were no more issues. Peace of mind is priceless!"
Robyn S on August 2022
Not a franchise, Family owned and operated since 1987. CCB# 94222, Serving the entire NW. FREE Estimates/ Inspections. Western Construction Systems LLC. is a locally owned, family owned and operated specialty construction company serving the entire north-west. WCS LLC. Prides its self in high quality work which is micro-managed by highly trained crews to ensure the highest level of confidant work. WCS LLC. Has also worked internationally in South America and currently has crews in Haiti. We have worked as far south as El Salvador and as far north as Alaska. We are able to attend to small residential job as well as large industrial projects.
"Western Construction Systems came out and did exceptional work at my house! They went above and beyond my expectations! They were friendly, professional, and hard-working! They took care of all the issues that I had concerns with and then some! Their prices were fair, especially for the high quality of work that they did! I know I pestered them with questions, but they were patient every single time. Before I contacted them to have the work done, I had high anxiety about the drainage issues. When they were finished, I felt confident that there were no more issues. Peace of mind is priceless!"
Robyn S on August 2022
SundanceOregon Inc
SundanceOregon Inc
Clear Span basement Beams, Earthquake retrofitting, Residential and commercial remodeling. MANY references available, Just ask!
"They were wonderful. They told me everything they were doing. And put interest in what I'm doing in my house."
Patricia A on November 2020
Clear Span basement Beams, Earthquake retrofitting, Residential and commercial remodeling. MANY references available, Just ask!
"They were wonderful. They told me everything they were doing. And put interest in what I'm doing in my house."
Patricia A on November 2020

WM. D. Herboth Remodeling Inc.
WM. D. Herboth Remodeling Inc.
Herboth Remodeling brings customer's ideas into reality. We have been servicing the Portland Metro area for over 30 years and are family owned and operated. Our expertise in seamlessly combining the new addition with the existing structure gives your home the look and feel of your addition being part of the original structure of your home. Remodel, Repair, and Additions Room additions Kitchen Remodels Bathroom Remodels and repairs Decks & Framing Garage rot repair New Garages Basement remodels Siding & Paint Window and door replacements Duplex addition Rejuvenated Fence Bath Room Rot Repair CCB# 57089
Herboth Remodeling brings customer's ideas into reality. We have been servicing the Portland Metro area for over 30 years and are family owned and operated. Our expertise in seamlessly combining the new addition with the existing structure gives your home the look and feel of your addition being part of the original structure of your home. Remodel, Repair, and Additions Room additions Kitchen Remodels Bathroom Remodels and repairs Decks & Framing Garage rot repair New Garages Basement remodels Siding & Paint Window and door replacements Duplex addition Rejuvenated Fence Bath Room Rot Repair CCB# 57089
The Tualatin, OR homeowners’ guide to earthquake retrofitting services
From average costs to expert advice, get all the answers you need to get your job done.
•Discover how much it costs to repair earthquake damage. Learn about average costs, key factors, and ways to save on earthquake repairs for your home.

A seismic shut-off valve stops the flow of gas during an earthquake, protecting your home from fires and explosions. Here’s what your earthquake valve installation cost will look like.
•Earthquake retrofit costs vary based on home size, location, and project scope. Learn what impacts your price and how to budget for a safer, more secure home.

Earthquake gas shut-off valve installation is important for any home in earthquake-prone areas. Explore how they’re installed here.

Fear not! Steady the shakes, tame the tremors, and get earthquake-ready while we give you a better idea of how long earthquake retrofitting takes.

Is earthquake retrofitting worth the cost and time? Learn whether seismic updates are a smart idea for your home and how to do it right.
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