How much rewiring a house costs in 2026, and whether your quote is fair

From the electrician: what I want you to know about rewiring a house

A house usually gets rewired because it gradually outgrew its wiring, not because the lights went out. It tends to come to a head when people keep adding modern loads to a system that was laid out for a window air conditioner, a single bathroom outlet and, at best, a microwave.

I run into this all the time in houses built in the middle decades of the last century: two-prong outlets, circuits with no ground, junction boxes packed past their limit, cloth-covered wire buried under insulation, and panels kept going for decades with tandem breakers and do-it-yourself add-ons. Plenty of these houses still have power in every room. That does not make the wiring safe, and it was never laid out for the way people live now.

The wire is rarely what makes a rewire expensive. Copper is not cheap, but labor is what really moves the quote. Plaster walls, cramped attics, detached garages and a request to keep wall damage to a minimum are what turn a simple rewire into a big job. Older houses are harder still, because many picked up finished basements, additions or remodels long after they were built. Some days the toughest part is sorting out which wiring is original and which was added by a past owner who watched half a how-to video back in the VHS era.

Here is what I wish more people knew: a rewire is more than running new wire. Once enough of the system is touched, current code applies where your code requires it, which can mean arc fault protection, ground fault protection in kitchens and bathrooms, interconnected smoke alarms, and better grounding and bonding, all things older houses never had. Inspectors hold this work to a much higher standard now than they did a decade ago.

This is also a category full of weak estimates. If a quote does not say how many new circuits are going in, whether the panel is part of the job, or who handles patching afterward, the number is not complete. "Rewire whole house as needed" does not describe the work.

If it were my house, I would rewire the whole thing in one go rather than chase problems one room at a time over the years. Rewiring piece by piece nearly always costs more in the end, because every electrician who comes later has to work around a mix of old and new circuits. Starting clean is tidier and safer, and by the time most people finish the piecemeal route, it is usually cheaper too.

Matt Kovalik, licensed Minnesota journeyworker electrician.