What the homeowner wanted
Peace of mind that their 100-year-old home would survive a major earthquake.
Structural • Seismic Retrofit
Capitol Hill Seismic Retrofit
A full seismic retrofit on a 1920s Capitol Hill home — cripple wall plywood bracing, anchor bolting, and a previously undetected foundation crack repaired.
Overview
- Location
- Capitol Hill, Seattle
- Timeline
- 3 weeks
- Scope
- Seismic retrofit + foundation repair
- Completed
- April 2025
Highlights
- Full cripple wall plywood bracing
- Anchor bolting per engineer specs
- Foundation crack epoxy repair
- Improved interior drainage
- Permitted and engineered
- Passed City of Seattle inspection
- Completed in 3 weeks
Our 1920s house had a cripple wall we'd been ignoring for years and I finally called to get an honest assessment. Marco walked the crawlspace with me, found a foundation crack we didn't even know existed, and laid out a plan that covered both issues within our budget. They got the retrofit and the crack repair done in three weeks and the house genuinely feels safer now.
Drew H.
The Story
Our plan
Engineer a full cripple wall retrofit, install per specs, and address the foundation crack discovered during the crawlspace assessment.
Build steps (high level)
- Crawlspace assessment and engineering
- Permit submission and approval
- Cripple wall plywood installation
- Anchor bolt installation
- Foundation crack epoxy injection
- Final inspection
Results
- Seismically upgraded structure
- Foundation crack sealed
- Passed all inspections
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What we did
Services performed on this job
Scope highlights:
- Cripple wall bracing
- Structural plywood installed per engineer drawings on all cripple walls.
- Anchor bolting
- Mudsill anchor bolts installed at specified spacing.
- Foundation repair
- Crack epoxy injection and improved interior drainage.
- Permit management
- Structural engineering, permit, and City of Seattle inspection.
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Foundation repairs, seismic retrofits, beam replacements, and structural improvements that protect Seattle homes for decades.
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