PE-stamped foundation strengthening — anchor bolt retrofits, cripple wall bracing, raised foundation upgrades, and podium-level reinforcement. From single-family homes through multifamily and commercial.
A handful of foundation scopes account for most of the seismic risk in California's older housing stock and commercial podiums.
Pre-1980s wood-frame homes commonly have unbolted sill plates and unbraced cripple walls — a recipe for sliding off the foundation. We design the standard FEMA P-1100 retrofit and the engineered equivalent where the standard plan doesn't fit.
Continuous perimeter footings, supplemental piers, and replacement of failing post-and-pier systems. Often combined with crawlspace cripple-wall bracing.
Wood-frame podium buildings often have inadequate hold-down anchorage to the concrete deck. We design the corrections — epoxy anchors, expanded mat footings, supplemental piles where needed.
Tilt-up panel anchorage, equipment pad strengthening, and seismic upgrades to existing slabs supporting heavier post-retrofit equipment.
Most residential foundation retrofits run on a tight schedule. We don't overcomplicate scopes that don't need it.
Crawlspace or basement inspection, photo documentation, condition assessment. Where drawings are available, we reconcile drawings to as-built.
Where FEMA P-1100 or a Plan Set A / B applies, we use it. Where it doesn't fit, we provide a stamped engineered design.
PE-stamped drawings, specifications, anchor schedules. Response to plan-check comments and contractor RFIs.
Periodic inspection during construction and final sign-off — coordinated with the city inspector and any required special inspection.
For single-family homes within the Plan Set A / B prescriptive limits, often not. Where the building is outside those limits (post-and-pier, hillside, complex geometry), engineered design is required — and worth the cost relative to the asset.
Standard residential: 1–3 weeks. Complex foundations or multifamily podiums: 4–8 weeks.
For qualifying single-family homes, yes — and we can write to that program's requirements. Larger or non-conforming buildings need separate engineering.
Yes — often the right move. Foundation, cripple-wall, and soft-story retrofits sequence naturally together and reduce total contractor mobilization.
Free 15-minute consultation, no obligation. You’ll get a written scope and fee estimate from a licensed California PE within one business day.
