REFRESHIFY

Why Earthquake Retrofitting Matters in the PNW

The Cascadia Subduction Zone could produce a 9.0+ magnitude quake. Many homes here—especially those built before 1980—weren’t designed to handle serious shaking.

Without seismic retrofitting, your home could slide off its foundation, collapse at weak joints, or suffer irreparable damage.

What Is a Seismic Retrofit?

A seismic retrofit reinforces your home’s structure to better withstand earthquakes. The most common upgrades include:

• Foundation Bolting: Anchoring your house to the concrete foundation
• Cripple Wall Bracing: Strengthening short wood walls between the foundation and first floor
• Shear Panels: Adding plywood or steel to resist lateral movement
• Load Path Reinforcement: Connecting roof, walls, and foundation as one unit

Do You Need One?

You likely do if your home:

• Was built before 1980
• Has a raised foundation or cripple walls
• Is located in Seattle, Tacoma, Portland, Eugene, or surrounding areas

These homes are at highest risk for severe earthquake damage.

What Permits Are Required?

• Seattle offers pre-approved retrofit plans for faster permitting
• Oregon residents may qualify for seismic tax incentives (ORS 455.400)
• British Columbia encourages retrofits in high-risk zones, especially Vancouver

Tip: Always check with your local city or county building department before starting.

Can You DIY?

Technically, yes. But it requires time, permits, and know-how.

We recommend DIY only for simpler upgrades like water heater strapping or minor bracing. For full retrofits? Hire a licensed contractor.

What Most Homeowners Overlook

• Skipping garage or additions
• Using wrong anchor bolts or spacing
• Forgetting to pull a permit (hurts resale)
• Ignoring wood rot or termite damage before retrofitting

Earthquake Safety Checklist

• 🔒 Foundation bolted
• 🧱 Cripple walls braced
• 🚿 Water heater strapped
• 🧯 Gas shutoff valve installed
• 🧰 Load path continuity verified
• 📄 Permit approved
• 👷 Reviewed by a qualified contractor

Final Thoughts

The Pacific Northwest is overdue. Earthquake retrofitting isn’t a “maybe someday” project — it’s protection for your family, property, and future.

Even a few upgrades can prevent total loss. And the peace of mind? Worth every penny.

👷 Need Help With a Retrofit? Contact Refreshify.

We’re local general contractors serving King County, Snohomish County and surrounding PNW communities. Whether you're just starting or need full project management — we’re here to help.