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LIVE · Studio ·Vol. I ·California ADU Desk ·Licensed · Bonded · Insured ·CSLB #1098432 ·BBB A+ Accredited ·120+ ADUs Delivered ·Starting $250K ·10–16% ROI ·Los Angeles ·Bay Area ·LIVE · Studio ·Vol. I ·California ADU Desk ·Licensed · Bonded · Insured ·CSLB #1098432 ·BBB A+ Accredited ·120+ ADUs Delivered ·Starting $250K ·10–16% ROI ·Los Angeles ·Bay Area ·
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Desk 01 · Los Angeles · Seismic retrofit

Los Angeles Seismic Retrofit Contractor. the work you do before the next quake.

LA's seismic retrofit ordinances (most notably the city's mandatory soft-story program) put thousands of single-family and multifamily buildings under deadline. We design and install seismic retrofits across LA County: cripple-wall bracing, foundation bolting, soft-story moment frames and steel cantilever columns, and shear wall upgrades.

Licensed California contractor · CSLB #1098432 · Los Angeles desk · LADBS

Begin a Los Angeles seismic retrofit brief →← Back to Los Angeles desk

About Seismic Retrofit in Los Angeles

We work with structural engineers who specialize in LA's retrofit code path — and we coordinate with tenants and property managers when the work is on an occupied multifamily building.

Los Angeles permit notes · Seismic Retrofit

What we resolve before drawings begin.

  • 01

    LADBS retrofit pathway

    LA has defined retrofit code paths (e.g. Plan Sets A–E for soft-story). We work within these to keep permits and inspections clean.

  • 02

    Cripple-wall + foundation bolting

    For older single-family bungalows, we bolt the mudsill to the foundation and brace the cripple walls with structural plywood. This is the highest-ROI seismic upgrade you can make.

  • 03

    Tenant coordination on multifamily

    Soft-story work on apartments requires phased construction so tenants stay in place. We project-manage notice, parking, and access.

Other Los Angeles services.

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Los Angeles · Seismic Retrofit FAQ

Questions Los Angeles homeowners ask first.

Start an LA seismic retrofit brief. We'll review LADBS notice (if any), engineer the upgrade, and write a fixed-scope contract.

  1. Does my LA building need a soft-story retrofit?
    If LADBS sent you a notice, yes. Generally: pre-1978 wood-frame multifamily with parking or commercial space on the ground floor. We can review your specific address.
  2. What does a soft-story retrofit cost?
    Most LA soft-story retrofits land $80K–$250K depending on building size, frame configuration, and finish restoration.
  3. What about single-family cripple wall + bolting?
    Typical single-family cripple-wall retrofit + foundation bolting runs $5K–$15K. CEA grants are often available.
  4. How long does an LA soft-story retrofit take?
    Most multifamily soft-story projects run 8–16 weeks on site after permit. Single-family cripple-wall + bolting is typically 1–2 weeks.
  5. Can tenants stay during a soft-story retrofit?
    Yes — we phase the work so tenants remain in place. Most retrofit work is at the parking level or perimeter cripple walls, not inside occupied units.
Begin

Begin your projectin twenty minutes.

A short feasibility review of your lot — what you can build, roughly what it costs, and how long it will take. Free of charge. No sales call afterwards unless you ask for one.

Get started→or call (323) 483-4705
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