Specialty Structural Contractor — San Francisco Bay Area
Foundation underpinning, seismic retrofitting, and structural steel — executed precisely, safely, and with nearly 30 years of San Francisco experience behind every job.
What We Do
The most consequential work on any project happens at the foundation. Bay Foundation & Steel was built specifically to do this work — precisely, safely, and without compromise.
Hand dug pit excavation on tight urban lots and steep SF slopes. New foundations, grade beams, and slab-on-grade. Concrete footings and post bases executed per structural drawings.
Soft story retrofits, unreinforced masonry upgrades, cripple wall bracing, and full seismic strengthening packages for Victorian, Edwardian, and mid-century residential buildings throughout San Francisco.
Full structural steel upgrades including moment frames, shear walls, Simpson Strong Wall systems, HSS columns, W-section beams, and all connections per structural drawings.
All concrete work including slabs, grade beams, retaining walls, and epoxy coatings. In-house concrete crew with decades of SF residential experience. All rebar and formwork included.
Why Bay Foundation & Steel
Structural engineers need a contractor who reads the drawings carefully, builds what's specified, and flags conflicts before they become problems. That's what Bay Foundation & Steel was built to be.
We understand San Francisco's geology, permit process, and the unique challenges of structural work on tight urban lots, steep slopes, and occupied historic buildings.
Our crew reads structural drawings carefully and executes to specification. We flag conflicts early and communicate proactively — before they affect your schedule or your client.
All shoring, bracing, and safety protocols meet or exceed Cal/OSHA requirements. We approach every foundation job with the same discipline regardless of scope or schedule pressure.
Foundation, concrete, seismic, and structural steel under one contract. No coordination gaps between trades. One responsible party from excavation through steel erection.
Get In Touch
We work directly with structural engineers, general contractors, and property owners throughout the San Francisco Bay Area.