Does Your Existing Seismic Retrofit Pass a Seismic Truth Audit™?
San Francisco Bay Area
June 19, 2026
Across the Bay Area, thousands of homes have already been “retrofitted.”
On paper, many of these jobs look perfect:
- Permit pulled
- Final inspection signed off
- Program paperwork stamped “approved”
- Contractor marketing materials claiming “up to code”
Under the house, the story is often very different. After being called in for years to fix “completed” retrofits that still left homes vulnerable, Avant‑Garde Construction Enterprise has launched a new service: the Seismic Truth Audit™.
This is a focused evaluation designed specifically for existing seismic retrofits so owners can see what they really have before the next earthquake – or the next dispute.
Why a Seismic Truth Audit™ Exists
Avant‑Garde is a Bay Area seismic retrofit contractor based in San Leandro. Over the last decade, the company has delivered more than $20 million in seismic solutions and is frequently called in to fix faulty “up‑to‑code” retrofits completed by others.
According to founder Matthew Gatterman, his team has yet to see a single retrofit that fully complies with applicable building codes and manufacturer requirements when they are brought in to evaluate troubled projects.
Common patterns:
- Wrong hardware or spacing
- Scrap plywood used where real shear walls were specified
- Critical hold‑downs and anchors missing in key locations
- Water and drainage issues quietly undermining the retrofit
Many homeowners believe they are protected. In reality, they have a false sense of security. The Seismic Truth Audit™ was created to close that gap.
Full service description:
Seismic Truth Audit™ – Existing Retrofit Reality Check
What the Seismic Truth Audit™ Includes
The Seismic Truth Audit™ is not a quick “free estimate from the hatch.” It is a structured, under‑house investigation focused only on existing retrofit work.
Each audit includes:
- Detailed on‑site review of existing seismic work
- Crawl‑space access where safe and feasible
- Visual review of hardware, plywood, anchors, and framing that were supposedly upgraded
- Photo documentation and mapping
- Labeled photos of key locations
- Sketches or notes showing where work matches (or doesn’t match) plans and standards
- Plain‑English written report
- Code violations, missed elements, and potential failure points explained in non‑technical language
- Clear separation of “cosmetic” vs “structural” concerns
- Recommended corrective actions and cost ranges
- Practical options: minimum viable corrections vs more robust upgrades
- Phasing suggestions where appropriate
- Guidance on next steps if work is substandard
- How to use the report when talking to the original contractor
- How to support bond, CSLB, or insurance claims when needed
More on the claim and dispute side here:
Bond, CSLB & Insurance Claim Assistance
Why Paperwork Is Not Enough
Avant‑Garde’s experience shows that:
- Gaps in enforcement
- Under‑resourced agencies, and
- Poorly vetted grant / brace‑and‑bolt programs
have allowed low‑quality work to slip through, wasting taxpayer‑funded FEMA/state money and leaving families at risk.
On paper, a retrofit may be:
- “Plan Set A compliant”
- “EBB approved”
- “Final inspected”
Under the house, it can still be wrong, incomplete, or materially weaker than intended. The Seismic Truth Audit™ treats the paperwork as a starting point, not proof.
For owners and attorneys involved in seismic retrofit disputes or litigation, this is often the first step toward a construction defect or expert witness case:
Construction Expert Witness & Litigation Support
Who the Seismic Truth Audit™ Is For
This audit is designed for:
- Homeowners who already paid for a seismic retrofit and want to know what they really got
- Small apartment and mixed‑use building owners who participated in soft‑story or brace‑and‑bolt programs and now question the quality of the work
- Buyers and real‑estate investors purchasing a property advertised as “retrofitted” and wanting verification
- Attorneys representing owners in disputes over retrofit quality or scope
The initial rollout focuses on existing retrofits in the Greater San Francisco Bay Area, including San Francisco, Oakland, Berkeley, Alameda, San Leandro, and nearby cities.
How to Request a Seismic Truth Audit™
If your home or building is already “retrofitted” and you want to know whether it will truly perform as expected, the next step is simple:
- Gather any plans, permits, inspection sign‑offs, and program paperwork you have.
- Take any photos you already have of the retrofit work, if accessible.
- Request a Seismic Truth Audit™ visit through:
- Seismic Truth Audit™ – Existing Retrofit Reality Check
- Or contact Avant‑Garde directly via WeCare@Avant‑GardeCE.com or 510‑881‑6573.
The goal is not to sell you a second retrofit. The goal is to tell you, with evidence, whether the work you paid for is actually protecting you, or whether it needs to be corrected, documented, and potentially pursued through claims, CSLB, or litigation.
About Avant‑Garde Construction Enterprise
Avant‑Garde Construction Enterprise is a family‑run business that has spent decades working on Bay Area homes. As a specialized general contractor with over 20 years of experience, the company has successfully retrofitted more than 3,000 homes and is proud to be a leader in premier seismic retrofits in the region.
In addition to new retrofit construction, Avant‑Garde provides evaluations, defect investigations, claim support, and expert witness services for homeowners, building owners, and attorneys. Protecting homes and loved ones – and telling the truth about what’s actually under a building – will always be the company’s top priority.
