Cost to Rewire a House in Marin (2026)

Because the cost is labor and access, not materials. The wire itself is inexpensive; what you’re paying for is running new circuits throughout the home, which in a finished house means opening walls and ceilings, fishing wire through framing, and then patching and refinishing everything afterward. Multiply that across every room, add the panel work a rewire usually involves, and it becomes a five-figure project. The same rewire in an open, under-construction home costs dramatically less precisely because the access problem disappears.

Often just part. “Rewiring” doesn’t automatically mean gutting every circuit — an electrician assesses how much of the existing wiring is unsafe, deteriorated, or obsolete, and sometimes the answer is replacing specific problem runs (like knob-and-tube buried in insulation) rather than the entire home. A partial rewire can address the real hazards for far less than a whole-house job. The key is a proper assessment, so you’re paying to fix what genuinely needs it rather than defaulting to the largest possible scope.

Significantly, yes — it’s the single biggest way to save on a rewire. Most of the cost of rewiring a finished home is the demolition and patching required to reach the wiring, so if you’re already opening walls and ceilings for a remodel, running new wiring at that point avoids that whole expense. If a renovation is anywhere on your horizon and the home needs rewiring, coordinating the two is far more economical than doing a standalone rewire later that re-opens walls you just finished.

It varies with the home’s size, access, and whether it’s occupied, but a whole-house rewire is typically a project of days to a couple of weeks rather than a single day. A vacant or under-construction home goes faster; working around a lived-in home, room by room, takes longer and adds coordination. There’s also permit and inspection time to account for. A good electrician sequences the work to keep the home as livable as possible and minimizes the stretches without power to a given area.

Frequently, yes — the two often go together. If a home is old enough to need rewiring, its panel and service are often outdated or undersized too, and it makes sense to address them as part of the same project rather than rewire to a panel that can’t support modern loads. That said, they’re distinct scopes: an electrician will tell you whether the panel genuinely needs replacing or upgrading alongside the rewire, so you can budget for the actual work rather than assuming one requires the other.

Absolutely. A rewire is major electrical work that requires a permit and inspection, and it must be brought up to the current code — this isn’t optional or a place to cut corners, because you’re replacing the home’s electrical backbone. A licensed C-10 pulls the permit and coordinates the inspections as part of the job. Permitted, inspected rewiring is also what protects you at resale and with your insurer; unpermitted rewiring is both a safety risk and a serious liability that will surface later.