Whole-House Rewiring Cost in 2026: What to Expect

This is the primary cost driver. A 1,000 sq ft home with simple layout might cost $3,500-$5,500 to rewire. A 2,000 sq ft two-story home runs $7,000-$12,000. Large homes over 3,000 sq ft can reach $15,000-$25,000. The cost per square foot generally decreases with size because fixed costs (panel, permits, setup) are spread across more area.

This is where rewiring costs vary most dramatically. If an electrician can access wiring through an unfinished basement below and an attic above, they can fish new wires without opening walls. In homes with finished basements, slab foundations, or no attic access, walls and ceilings must be opened - and then repaired. Drywall repair and painting can add $2,000-$8,000 depending on how many walls are opened.

Homes with knob-and-tube wiring (pre-1940s) are the most expensive to rewire because the old wiring must be fully removed or abandoned in place, and every circuit is replaced. Aluminum wiring (1960s-1970s) can sometimes be remediated with copper pigtails at each connection point ($50-$75 per outlet) rather than full replacement. Older copper wiring that is just undersized is the simplest - new wire is pulled alongside and the old wire is abandoned.

Modern code requires far more circuits than homes built before 1980. Kitchens need at least two 20-amp small appliance circuits. Bathrooms need dedicated GFCI circuits. Each bedroom needs an arc-fault protected circuit. A modern 2,000 sq ft home typically has 20-30 circuits vs the 8-12 circuits found in many older homes. More circuits means more wire, more breakers, and more labor.

Most rewiring projects include a panel upgrade because the existing panel is too small for modern circuit counts. If the panel was recently upgraded and has capacity, this cost is zero. Going from 100 to 200 amps adds $1,000-$2,000. Going from 60 amps (common in pre-1960s homes) to 200 amps costs $1,500-$2,500 including new service entrance cable and meter base.

“How will you access the wiring without destroying my walls?”

Why this matters: The best electricians have strategies for minimizing wall damage - fishing from attic and basement, using flex bits, and making small strategic openings. An electrician who immediately says 'we will need to open all the walls' may not have the experience to do it efficiently.

“Does the quote include drywall repair and painting?”

Why this matters: Some electricians include patching in their quote; others leave open walls for you or a drywall contractor to finish. Get this in writing. The repair and paint work can add 20-30% to the total project cost.

“How many circuits will the new system have?”

Why this matters: A modern home needs 20-30+ circuits. Ask for a circuit schedule showing every circuit, what it feeds, and its amperage. Compare this across bids to make sure you are comparing equal scopes of work.

“Will you remove the old wiring or abandon it in place?”

Why this matters: Removing old wiring is cleaner but costs more. Abandoning it in place is standard practice and safe as long as it is fully disconnected at both ends. Some insurance companies or home inspectors prefer complete removal.

“What is the rough-in inspection process?”

Why this matters: Rewiring requires a rough-in inspection before walls are closed up, and a final inspection after devices are installed. Ask the electrician to coordinate the inspection schedule so you are not waiting weeks between phases.

“Will you be doing the work yourself or using a crew?”

Why this matters: Whole-house rewiring is labor intensive. A solo electrician may take 2-3 weeks on a medium home. A crew of 2-3 can finish in 1 week. Ask who is doing the work and their experience level.

“Is the existing grounding system adequate, or does it need upgrading?”

Why this matters: Many older homes have inadequate grounding. The rewiring quote should include proper grounding - two ground rods, bonding to water pipes, and an equipment grounding conductor in every circuit. This is not optional for code compliance.