Seismic Retrofit & Earthquake Preparedness

Protect Your Home from Earthquake Damage

Seismic retrofitting in LA runs $5,000-$12,000 for basic cripple-wall bracing and bolt-down (typical for older homes), $12,000-$28,000 for full foundation-perimeter bolt-down with shear-wall plywood, and $28,000-$70,000 for hillside homes with caissons or major foundation work. Insurance discounts of 5-25% on earthquake coverage are common after a documented retrofit. Some California cities require seismic evaluation when a home is sold; check your local ordinance.

California Earthquake Authority's Brace + Bolt program offers up to $3,000 in rebates for qualifying retrofits on older homes with raised foundations and cripple walls. The retrofit itself is a high-value safety investment for older California homes, since the cost is small relative to typical earthquake damage. Most permits issue in 2-4 weeks; install takes 1-2 weeks. Cost variance comes from foundation type (raised wood-frame foundations are the standard target; slab-on-grade homes typically don't need this work), home size (a 1,200 sq ft bungalow needs fewer anchor bolts and shorter cripple-wall plywood runs than a 3,500 sq ft Spanish revival), Earthquake Brace + Bolt program eligibility (we check the eligibility map at the assessment stage), engineering scope (most retrofits use a pre-approved Standard Plan A; complex foundations may need a custom-engineered solution at $1,500-$4,000), and any soft-story concerns where the cripple wall is taller than 4 feet and may need additional reinforcement. We engineer to IEBC Appendix A4 (CA-amended), with the engineer's stamp on the plans and Buildda holding license #1131088 on the permit. 2-year workmanship warranty on the install.

Pricing Tiers

Pricing reflects typical projects in the Los Angeles area. Actual quotes vary by site conditions, material lead times, permit requirements, access constraints, and the scope of any structural or substrate repairs uncovered during demolition. We provide a written, itemized estimate only after an on-site walkthrough. License #1131088, 2-year workmanship warranty on every project, in writing.

All prices are estimates. Actual costs vary based on project scope, site conditions, material selections, and permit requirements. Contact us for a personalized quote.