Los Angeles sits on one of the most seismically active regions in the world. The question for most homeowners isn’t if the next big earthquake will happen — it’s whether your home will still be standing after it does.
Foundation retrofitting is one of the most impactful safety upgrades an LA homeowner can make. This guide explains what a retrofit is, who needs one, what it costs, and how to get started.
What Is a Foundation Retrofit?
A foundation retrofit (also called a seismic retrofit) strengthens the connection between your home’s wood frame and its concrete foundation. Without this connection, the house can slide off its foundation during an earthquake — even a moderate one.
The most common retrofit type in LA is called ‘bolting and bracing.’ This involves:
- Anchor bolts — securing the wood sill plate to the concrete foundation
- Cripple wall bracing — adding plywood sheathing to resist lateral movement
- Blocking — adding wood blocking to keep floor joists from collapsing
Does Your Home Need a Foundation Retrofit?
Your home is most likely to need a retrofit if it was built before 1980 and has one of these characteristics:
- Raised foundation (crawl space under the house)
- Cripple walls — short wood-framed walls that sit on top of the foundation
- Hillside location with a stepped or split-level foundation
Soft-Story Buildings: A Special Case
If you own a multi-unit building in Los Angeles with a ‘soft story’ — a ground floor with large openings like garage doors or retail space — the City of Los Angeles has a mandatory retrofit ordinance. Buildings flagged under Ordinance 183893 must be retrofitted by their deadline or face penalties.
How Much Does a Foundation Retrofit Cost in Los Angeles?
| Retrofit Type | Typical Cost Range | Timeline |
|---|---|---|
| Standard bolting and bracing (crawl space) | $3,000–$7,000 | 1–3 days |
| Hillside / stepped foundation | $8,000–$20,000 | 3–7 days |
| Soft-story multi-unit building | $60,000–$150,000+ | 4–12 weeks |
| Slab foundation reinforcement | $5,000–$15,000 | 2–5 days |
Does LA Have a Free Retrofit Program?
Yes. The City of Los Angeles offers the Earthquake Hazard Reduction Program, which provides free or subsidized retrofits for qualifying single-family homeowners. Key eligibility requirements:
- Owner-occupied single-family home or duplex
- Built before 1979
- Raised wood-frame foundation with cripple walls
- Income limits apply (check the City of LA LADBS website for current limits)
Does a Retrofit Affect My Home Insurance?
Yes — in a good way. Many California insurance carriers offer premium discounts for retrofitted homes. California’s CEA (California Earthquake Authority) offers a 5–20% discount on earthquake insurance premiums for homes with documented retrofits.
Why Choose Cali View Builders?
Cali View Builders is a licensed Los Angeles general contractor (CSLB #1081371) with extensive experience in foundation retrofits for raised-foundation homes across the San Fernando Valley and greater LA.
- Licensed and insured — CSLB #1081371
- Familiar with LADBS permit process for retrofits
- Free on-site inspections for homeowners considering a retrofit
- Serving North Hollywood, Burbank, Glendale, Pasadena, and surrounding cities
Get a Free Foundation Retrofit Assessment
Not sure if your home needs a retrofit? We’ll come out and take a look at no charge. Call Cali View Builders at (323) 484-8458 or visit caliviewbuilders.com to schedule your free assessment.