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Earthquake Retrofitting: How It Changes Building Performance

Earthquake retrofitting can meaningfully change how a home responds when the ground begins moving. For property owners in Snohomish County, that difference is not theoretical. Western Washington sits within an active earthquake region influenced by the Cascadia Subduction Zone, shallow crustal faults, and deep in-slab earthquakes such as the 2001 Nisqually event. A retrofit does …

Hidden Wood Rot Can Undermine a Seismic Retrofit

In Seattle, rot repair can be an essential first step before an older home is strengthened for earthquake resistance. Seismic retrofitting depends on sound wood framing, secure connections, and a continuous path for earthquake forces to travel from the structure into the foundation. When moisture has deteriorated sill plates, floor joists, rim joists, posts, beams, …

Seismic Retrofitting for Cripple Wall Stability

In La Conner, seismic retrofitting often begins with a deceptively small section of the house: the short wood-framed wall between the foundation and the first-floor framing. This is the cripple wall, and in older Pacific Northwest homes it can become one of the most vulnerable parts of the structure during strong shaking. When a cripple …

Strengthen Older Homes Built Before Modern Seismic Codes

An older house can remain sturdy through decades of Northwest weather while still having structural connections that were never designed for the earthquake forces recognized today. For property owners in Sedro-Woolley, professional seismic services can identify these vulnerabilities and determine whether targeted retrofitting could create a stronger connection between the house, its framing, and its …

What Issues Can Seismic Fastening Services Prevent?

Earthquakes are an unavoidable part of life in the Pacific Northwest. While many property owners focus on the risk of structural damage during a major seismic event, smaller, more frequent earthquakes can also pose serious hazards inside homes and commercial buildings. Seismic fastening services help reduce these risks by securing critical building components, utilities, equipment, …

Earthquake Preparedness Checklist for Homeowners

Earthquakes are one of the few natural disasters that can strike without warning. In the Pacific Northwest, homeowners often focus on winter storms, flooding, and wind events, but seismic activity remains a significant risk throughout Washington. From the Cascadia Subduction Zone offshore to numerous crustal faults throughout the region, residents in Anacortes and the surrounding …

Step-by-Step Raised Foundation Retrofitting Guide

Raised foundation homes are common throughout Mount Vernon, especially in older neighborhoods where crawl spaces and short cripple walls were standard construction methods. While these homes can remain structurally sound for decades, earthquakes place very different stresses on a building than normal day-to-day weight loads. Instead of pushing downward, seismic activity forces the structure to …

How Earthquake Forces Impact Residential Structures

Homeowners throughout Skagit County often hear terms like “ground acceleration,” “lateral movement,” and “seismic loads” during conversations about earthquake retrofitting, but many people are unsure what those forces actually mean for their homes. In the Pacific Northwest, understanding how earthquakes affect residential structures is important because our region faces real seismic threats from the Cascadia …

Reduce Earthquake Damage With Foundation Bolting

Many older homes throughout Kenmore and the greater Pacific Northwest were built before modern seismic codes required proper anchoring of foundations. During an earthquake, homes that are not securely bolted to their foundations can shift sideways, collapse off cripple walls, or slide entirely from their base structure. That type of movement causes severe structural damage, …

PNW Earthquake Risk vs California Reality

Homeowners often assume that California carries the real earthquake threat, while Washington and Oregon sit in a lower-risk category. In reality, that assumption can lead to costly inaction. When we look at seismic history, fault activity, and building vulnerability, the Pacific Northwest presents a very real and often underestimated need for earthquake fastening. The Cascadia …

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B Snead profile picture
B Snead
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I came to know that my house was vulnerable to seismic events so I did some research on how to lessen the risk. The things it seemed I needed were things I didn't want to do myself so I looked around for a vendor and came upon Evergreen Seismic. Matt came out and looked at my house and recommended mediation that was almost exactly what my research had indicated and explained the technology in terms of my particular situation, which was appreciated. He even explained other steps he didn't think were needed, which he probably could have talked me into. I appreciated his honesty and knowledge. We scheduled the work and he did exactly what he said he'd do. I would recommend Matt and his company to anyone.
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Warner Asch profile picture
Warner Asch
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We had a fantastic experience with Evergreen Seismic. From the initial estimate through the completed retrofit, everyone we worked with was professional, responsive, and easy to communicate with. Matt was especially great to work with—he took the time to answer our questions, explained the process clearly, and made us feel confident every step of the way. We never felt pressured and always felt like we were in good hands. The crew was punctual, respectful of our home, and completed the work efficiently while keeping the area clean and organized. We also chose to have an automatic seismic gas shutoff valve installed, and they made sure we understood how it worked before they finished. Our home was built in 1959, so it gives us real peace of mind knowing it has now been properly seismically retrofitted. The quality of the work and customer service exceeded our expectations. Thank you, Matt, and the entire Evergreen Seismic team! We highly recommend Evergreen Seismic to anyone looking for a knowledgeable, trustworthy, and professional company.
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Blaine Robbins profile picture
Blaine Robbins
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Matt did a seismic retrofit for us recently. He was communicative and responsive throughout the entire process and did fantastic work, often going above and beyond what was necessary. I would highly recommend for anyone thinking about doing a retrofit.
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Jonathan Glick profile picture
Jonathan Glick
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I'm very happy with the seismic retrofit work Evergreen Seismic did at our home. They were clear about the scope of work and reasonably priced compared to other providers. Matt and Phil were a pleasure to work, worked around our schedule, and got the job done quickly. They work with a well-known engineering company so I'm confident the work meets a high standard.
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Alex profile picture
Alex
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Matt & Phil did an absolute fantastic job seismically retrofitting our home. There were several stages in the process where the team went well above and beyond what was required. Generally it is hard to find Contractors you can trust and Evergreen Seismic is absolutely among the few that you could trust to do a great job!
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Brian Moynihan profile picture
Brian Moynihan
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Matt and Phil went above and beyond on the seismic retrofit of our 1919 home. They repaired some rot that was discovered during the process, and still got the project done within the estimated number of days. They also replaced some questionable posts and strengthened a compromised beam - things that other contractors did not include in their bid. Very reasonably priced.
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Beck Royer profile picture
Beck Royer
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Excellent professional and a knowledgeable company! Matt was prompt, and helped us with an insurance renewal and on site visit!! Great all round and honest Beck
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Cameron Skaggs profile picture
Cameron Skaggs
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Matt and his team were very professional. He helped explain the process and was very transparent with everything. They worked quickly too. I'd recommend them unhesitatingly to anyone looking to retrofit their house for earthquakes
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Jaymes Dee profile picture
Jaymes Dee
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Matt and his team were beyond helpful during our journey to seismic retrofit our 1953 home. At first I was certain I would be doing the retrofits and Matt was gracious enough to come and venture through my crawlspace with me and give me pointers. When life and all of it's entanglements got in the way, Matt and his team were able to knock out the work expeditiously for a very reasonable price. My family and I feel safer because of the work they did. 10/10 recommend.
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Erik Peterson profile picture
Erik Peterson
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I can't say enough great things about Evergreen Seismic. If I could, I would give them 6/5 stars! Matt was such a pleasure to work with. He was so knowledgeable, patient, responsive, generous with his time, and such a resource. He explained complicated topics into basics I could understand, and also adjusted his approach based on some constraints we had. If you are looking to do any kind of seismic retrofit for your home, you should reach out to Matt and his team at Evergreen Seismic. Just...wow. So refreshing to work with some true professionals.
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