California's Earthquake Brace and Bolt programme offers up to $3,000 toward a code-compliant seismic retrofit for wood-framed houses built before 1980 on a raised foundation, in participating ZIP codes. The retrofit itself costs about $3,000 to $12,000 in Los Angeles. Registration opens for a limited window each year rather than running continuously, so check the programme site for the current window.
- Standard grant
- Up to $3,000Toward a qualifying retrofit
- Typical cost
- $3,000 to $12,000Varies with access and wall length
- Qualifying houses
- Pre-1980, raisedIn participating ZIP codes
- Registration
- Limited windowsNot open year round
What the retrofit does
It connects the house to its foundation and braces the short walls in the crawlspace. Anchor bolts or foundation plates go in every four to six feet through the wood sill plate, with square plate washers. Plywood goes on the cripple walls with a specified nailing pattern. Metal connectors tie the floor framing to those walls.
That is the whole thing. It is not glamorous and it is the single highest-value seismic work available on an older Los Angeles house, because a house that slides off its foundation is usually a total loss and a house that stays on it usually is not.
Does your house need it
Three questions. Was it built before 1980? Does it sit on a raised foundation with a crawlspace rather than a slab? When you look in the crawlspace, can you see bolts through the wood sill plate and plywood on the short walls?
If the answers are yes, yes and no, it needs one. Houses built before the 1950s frequently have nothing at all holding the framing to the concrete, just gravity and friction. We will come and look in the crawlspace and tell you either way.
The grant, and the bigger one underneath it
The standard Earthquake Brace and Bolt grant is up to $3,000 toward a code-compliant retrofit. Eligibility requires a wood-framed house built before 1980 on a raised foundation, located in one of the participating high-hazard ZIP codes, with the retrofit done to the state standard and permitted.
There is also a supplemental grant for income-qualified households that can cover substantially more of the cost. The programme's own published materials have been inconsistent about the exact supplemental amount, so treat the figure you read anywhere, including here, as something to confirm directly with the programme when you register.
Registration windows
This is the part that catches people. The programme does not accept applications continuously. It opens registration for a limited period each year, draws from the registered pool, and closes again. If the window is shut when you look, there is usually a notification sign-up.
You do not have to wait for the grant to do the work, and plenty of owners do not. But if you are going to do it anyway, registering first and timing the work to the grant is free money for the same job.
Standard plan sets
Qualifying houses can be permitted using a state standard plan set rather than custom engineering, which is why a bolt-and-brace permit is quick and cheap compared to most structural work. The engineering has already been done centrally.
That only applies to houses that fit the standard. Hillside houses, houses on cripple walls taller than four feet, and houses with unusual framing need an engineer, and both the cost and the timeline go up.
Los Angeles County figures, reviewed 2026-10-29 by America General Contractors, California contractor licence CSLB 1083262. Planning ranges, not a quote, and not legal advice. We confirm the current rules for your parcel before anything is drawn.
Questions
Is bolting the house to the foundation enough on its own?
On a house with short cripple walls, no. Bolting stops the house sliding off, and bracing stops the cripple walls folding over. Doing one without the other leaves half the failure mode in place. The standard retrofit does both.
What if my house is on a slab?
Then this retrofit does not apply to you, because there is no crawlspace and no cripple wall. Slab houses have their own vulnerabilities but sliding off the foundation is not usually one of them.
Does it reduce my insurance?
The California Earthquake Authority has offered premium discounts for houses with a qualifying retrofit. Whether you carry earthquake cover and what it costs is a separate conversation, but the retrofit is one of the few things that improves both the risk and the price.
How disruptive is it?
Barely. The work happens in the crawlspace. You stay in the house, nothing gets opened up inside, and it takes one to two weeks.
Can I do it myself?
The programme requires permitted work, and an owner-builder permit is possible. Most people do not, because working flat on your back in an 18-inch crawlspace drilling into concrete is a specific kind of unpleasant and the inspection is unforgiving about nailing patterns.
Related reading
- What is a bolt-and-brace foundation retrofit?
- What are the signs of foundation problems in a house?
- How much does foundation repair cost?
