Seismic Retrofitting in Los Angeles: Why Every Homeowner Should Care

Los Angeles sits on some of the most active fault lines in the United States. The San Andreas Fault, the Hollywood Fault, the Newport-Inglewood Fault — they crisscross the region and pose a real, ongoing threat to residential properties. If you own a home in LA, seismic retrofitting isn’t just a smart investment — it may be a legal requirement.

At Hey Builders Inc in Calabasas, we’ve helped homeowners across Los Angeles County strengthen their homes against earthquake damage. With over 230 completed projects and deep expertise in LA building codes, we understand what it takes to protect your most valuable asset.

What Is Seismic Retrofitting?

Seismic retrofitting involves strengthening an existing structure to make it more resistant to earthquake forces. For residential properties in Los Angeles, this typically includes one or more of the following:

• Foundation bolting: Securing the wooden frame of your home to its concrete foundation using anchor bolts and steel plates. This prevents the house from sliding off its foundation during shaking.
• Cripple wall bracing: Reinforcing the short wooden walls between the foundation and the first floor with structural plywood. Cripple walls are one of the most common failure points in older LA homes.
• Soft story retrofitting: Strengthening buildings with open ground floors — typically apartments or homes with tuck-under parking — by adding steel moment frames or plywood shear walls.
• Chimney bracing: Securing unreinforced masonry chimneys that can collapse during moderate to strong earthquakes.

The goal is straightforward: keep your home standing, keep your family safe, and minimize the financial devastation that earthquake damage can cause.

LA’s Mandatory Retrofit Ordinances

The City of Los Angeles has enacted some of the most aggressive seismic retrofit mandates in the country. If you own property in LA, you need to be aware of these requirements:

Ordinance 183893 (Soft Story Buildings): Passed in 2015, this ordinance requires owners of soft story wood-frame buildings (typically apartment buildings with ground-floor parking) to complete seismic retrofitting. The city identified approximately 13,500 buildings that require compliance, with deadlines that have been rolling out in phases.

Ordinance 184081 (Non-Ductile Concrete Buildings): This ordinance targets older concrete buildings that lack the flexibility to withstand seismic forces. These structures, common in commercial and mixed-use areas throughout LA, are considered among the most dangerous building types in an earthquake.

Even if your property isn’t subject to a mandatory ordinance, voluntary retrofitting is strongly recommended — especially for homes built before 1980. Older homes in neighborhoods like Hancock Park, Los Feliz, Pasadena, and the Hollywood Hills were often constructed without modern seismic standards.

The Real Cost of Not Retrofitting

Many LA homeowners underestimate the financial risk of earthquake damage. Consider these realities:

Standard homeowners insurance does not cover earthquake damage. You need a separate earthquake insurance policy, and even then, deductibles are typically 10% to 20% of the dwelling coverage amount. On a $3 million home, that means you’re responsible for the first $300,000 to $600,000 in damage before insurance pays a cent.

Earthquake damage can render a home uninhabitable. Foundation failure, structural collapse, and severe cracking can require months of repairs — or total demolition and rebuild. In premium neighborhoods like Calabasas, Beverly Hills, or Brentwood, reconstruction costs often exceed $500 per square foot.

Property value impact is real. As seismic awareness grows among LA homebuyers — particularly at the luxury level — homes without retrofitting are increasingly viewed as liabilities. Disclosure requirements mean that buyers will know if your home lacks basic seismic upgrades.

The cost of retrofitting is a fraction of the cost of earthquake damage. For most single-family homes in Los Angeles, a comprehensive seismic retrofit runs between $5,000 and $30,000 — depending on the home’s age, size, foundation type, and the scope of work required.

What Does the Retrofitting Process Look Like?

A typical residential seismic retrofit in Los Angeles follows this process:

1. Assessment and engineering. A licensed engineer evaluates your home’s existing structure, foundation, and potential vulnerabilities. This assessment determines the scope of work and engineering requirements.

2. Permit application. Seismic retrofitting requires permits from the Los Angeles Department of Building and Safety (LADBS) or your local jurisdiction. Your contractor should handle the entire permitting process.

3. Construction. For a standard bolt-and-brace retrofit on a single-family home, construction typically takes 1 to 3 weeks. Most of the work happens in the crawl space beneath the home, so disruption to your daily life is minimal.

4. Inspection and certification. After completion, the city inspector verifies that all work meets code requirements. You receive documentation certifying that your home has been seismically retrofitted — a valuable asset for insurance purposes and future resale.

Seismic Retrofitting and Insurance Benefits

Retrofitting your home can lead to meaningful savings on earthquake insurance premiums. The California Earthquake Authority (CEA) offers premium discounts of up to 25% for homes that have been properly retrofitted.

Additionally, the CEA’s Earthquake Brace + Bolt (EBB) program provides qualifying homeowners with grants of up to $3,000 toward the cost of seismic retrofitting. Eligibility is based on your home’s age, location, and construction type. Many homes in older LA neighborhoods like Silver Lake, Echo Park, Eagle Rock, and the San Fernando Valley qualify.

For high-value properties, the insurance savings alone can recoup the cost of retrofitting within a few years — all while providing the peace of mind that comes with knowing your home is prepared for the next big earthquake.

Which Homes Need Retrofitting Most?

While every home in Los Angeles faces some level of seismic risk, certain properties are especially vulnerable:

• Homes built before 1980: Pre-1980 construction often lacks the seismic detailing required by modern building codes.
• Homes on raised foundations: Properties with crawl spaces and cripple walls are more susceptible to foundation failure.
• Hillside homes: Properties in the Hollywood Hills, Pacific Palisades, Bel Air, and similar hillside areas face additional risks from slope instability and landslides triggered by earthquakes.
• Homes with unreinforced masonry: Brick chimneys, stone veneer, and unreinforced masonry walls are extremely vulnerable to seismic forces.
• Multi-story homes with open ground floors: If your home has a garage or large open space on the ground level, it may have a soft story vulnerability.

Why Choose Hey Builders for Seismic Retrofitting

Seismic retrofitting requires precision, engineering expertise, and a thorough understanding of Los Angeles building codes. At Hey Builders Inc, we bring all three to every project.

Based in Calabasas and serving homeowners throughout Los Angeles County, our team has extensive experience with residential seismic upgrades — from straightforward bolt-and-brace projects to complex soft story retrofits. We work with licensed structural engineers, handle all permitting, and ensure that every retrofit meets or exceeds current seismic standards.

With over 230 completed projects across the greater LA area, we understand the unique challenges that come with building in earthquake country — and we’re committed to helping you protect your home and your family.

Don’t wait for the next earthquake to find out if your home is prepared. Call Hey Builders Inc at (877) HEY-4639 or schedule a free seismic assessment today. Your home — and your peace of mind — are worth it.