This is an ongoing whole-house remodel in Oakland — a 100-year-old home built in 1920 that’s getting a full structural overhaul. If you own a historic home in Oakland, Berkeley, Alameda, or anywhere in the East Bay, here’s what a project like this actually involves.
The original framing has been taken down, and as you can see in the photos, the entire second floor has new trusses, new roof, and new framing. On the first floor, we kept a few of the original studs and sistered in new lumber to reinforce them — preserving what was still sound while bringing everything up to current California structural and seismic standards.
One thing every homeowner planning a major remodel on a century-old Oakland home should know: if you demolish less than 50% of the exterior walls or less than 50% of the building volume, the project is classified as a remodel rather than new construction. Staying under that 50% threshold avoids triggering full new-construction code requirements — which keeps your project more cost-effective and less complex on the permitting side. On a 1920s home, this is often the smartest path forward, but it takes careful planning from day one.
Our in-house crew handled all the structural work directly — foundation repairs, reframing, roofing, and plumbing reinstall. Century-old homes almost always reveal hidden conditions once the walls come down: rotted sills, undersized framing, outdated galvanized plumbing, or foundations that never met modern seismic standards. Having a team that has worked through these situations many times before is what keeps a project like this on track and on budget.
A full gut renovation in Oakland requires a building permit from the City of Oakland Planning and Building Department, plus separate sub-permits for electrical, plumbing, and mechanical work. If you're modifying structural elements — removing walls, adding beams, changing the roofline — structural engineering drawings are also required. Oakland's permit timeline typically runs 6–10 weeks for residential projects. We handle the full permit application and inspection coordination for every project.
In California, a project is classified as a remodel (rather than new construction) if you retain more than 50% of the exterior walls and more than 50% of the building volume. Staying under that threshold is significant — new construction triggers a different set of code requirements, impact fees, and utility connection fees that can add tens of thousands of dollars to the project cost. On older Bay Area homes, strategic remodeling that preserves enough of the original structure is often the most cost-effective path to a fully updated home.
A full gut renovation on a 1,500–2,000 sqft Bay Area home — taking it to the studs, replacing all mechanical systems (electrical, plumbing, HVAC), and fully finishing the interior — typically runs $300,000–$600,000 depending on finish level and the extent of structural work required. Older homes in Oakland, Berkeley, and Alameda often have additional costs for foundation work, seismic upgrades, and hazardous material remediation (asbestos, lead paint) that can add $30,000–$80,000 to the base scope.
Century-old Bay Area homes almost always reveal a combination of: galvanized steel plumbing that needs full replacement (galvanized corrodes from the inside out and restricts water pressure); knob-and-tube wiring that must be replaced to meet current code; cripple wall foundations that need seismic bolting and bracing; and rotted wood at sill plates, window frames, or exterior sheathing where water infiltration has occurred over decades. Budget a 10–15% contingency for hidden conditions on homes built before 1940.