Seismic Retrofit Cost Factors in San Diego
What drives a seismic retrofit / cripple wall bolting estimate, and how the EBB program can offset it.
A seismic retrofit eligibility checklist you can run yourself
This is a self-check, not a form — walk through it against your own house to get a reasonable read on seismic retrofit eligibility before you talk to anyone. It will not replace an actual inspection, but it will tell you whether one is worth scheduling.
Get a professional eligibility readWhat this checklist is actually checking for
Seismic retrofit eligibility mostly comes down to two things: whether your house has the kind of foundation and cripple wall a retrofit is designed to address, and whether it falls in a ZIP code and construction era the state's Earthquake Brace + Bolt (EBB) program currently covers. The checklist below walks through both, in the order a professional assessment would actually check them, so you can get a reasonable read on your own house before requesting anything. None of this replaces someone physically looking at your crawl space and foundation. What it does is tell you whether that visit is likely to be worth scheduling, or whether your house is a poor fit for this specific kind of work and your attention belongs somewhere else — like foundation-repair or house-leveling instead.
Walk through these against your own house
- 1. Does your house sit on a raised foundation with a visible crawl space?Seismic retrofit in the cripple-wall-bolting sense applies to raised wood-frame foundations with a crawl space underneath — not to slab-on-grade construction, which does not have a cripple wall to brace.
- 2. Was the house built before roughly the 1990s?Modern building codes already require the bracing and bolting a retrofit adds, so older construction — built before those requirements were standard — is the typical candidate. A newer raised-foundation home may already meet code.
- 3. Can you see a wood-framed cripple wall in the crawl space, with no visible metal bracing or plywood sheathing on it?The cripple wall is the short wall between the top of the foundation and the underside of the floor framing. If it is bare framing with no bracing, that is the specific gap a retrofit closes.
- 4. Is the house frame not already visibly bolted to the foundation with metal plates or straps?Sill plate bolting is often visible along the foundation-to-framing connection in the crawl space. Its absence is one of the clearest signs a retrofit has not already been done.
- 5. Is your address in a participating Earthquake Brace + Bolt ZIP code with an open funding round?EBB eligibility is set by the state program directly and changes by funding round — checking your specific ZIP code and the program's current status is a separate step from anything on this page.
- 6. Is the foundation itself free of visible structural damage — no major cracking, leaning, or settlement?A retrofit bolts and braces an existing, sound foundation. If the foundation itself shows separate signs of damage or movement, that is a foundation-repair question to address first, alongside or before a retrofit.
Questions people ask
I checked most of these — does that mean I qualify for EBB funding?
It means your house has the physical characteristics a seismic retrofit typically addresses, which is a real and useful signal. Actual EBB program eligibility — ZIP code, funding round, and program-specific requirements — is confirmed directly with the program, not by this checklist.
My house is on a slab foundation. Does this checklist apply to me?
No — slab-on-grade foundations do not have a cripple wall to bolt and brace, so this specific form of seismic retrofit does not apply. That is not the same as your house having no seismic concerns at all, just a different scope than what this checklist covers.
I found foundation cracking while checking item 6 — what should I do?
That is worth addressing as its own question before or alongside a retrofit — see foundation-repair for what that assessment looks like. Bolting and bracing a foundation that already has an active structural problem does not resolve the underlying issue.
Is this checklist a substitute for a real inspection?
No. It is a way to get a reasonable read on your own situation before deciding whether an inspection is worth scheduling — the actual determination requires someone physically in your crawl space checking the foundation and framing directly.
Get a professional eligibility read
Tell us what you found walking through the checklist, and your approximate home age and foundation type.
Request an Assessment