How Much Does It Cost to Rewire a House?
Rewiring is one of the bigger electrical projects a home can need, and it is almost never a small number. But it is also one of the most valuable, because it replaces the aging wiring that can quietly become a fire risk. Here is what a rewire really involves, what it typically costs in 2026, and why it belongs firmly in the hands of a licensed electrician.
The short version
- A whole-home rewire typically runs $8,000 to $20,000 or more — often about $3 to $8 per square foot.
- Small homes cost less; large homes, plaster walls, and limited access cost more.
- The big drivers are square footage, number of circuits, wall type, access, and drywall repair.
- Knob-and-tube, cloth, or aluminum wiring and frequent trips are common reasons to rewire.
What “rewiring” actually means
Rewiring means replacing the branch-circuit wiring that runs through your walls and ceilings to outlets, switches, and fixtures — and, depending on scope, updating the devices and sometimes the panel too. It is not the same as a simple repair. A rewire touches most of the home’s circuits, which is why it is priced as a project rather than a service call.
Full vs partial rewire
A full rewire replaces essentially all of the home’s branch wiring. A partial rewire targets specific problem areas — an old circuit, a room addition, a kitchen, or the runs that keep tripping — while leaving sound wiring in place. Partial work costs less up front, and it can be a reasonable middle path, but a licensed electrician should confirm that the wiring you keep is actually safe to keep.
What drives the cost
Two homes of the same size can be quoted very differently. These are the factors that move the number:
- Square footage. More space means more wire, more devices, and more labor. This is why per-square-foot estimates are a useful starting point.
- Number of circuits. A home with many dedicated circuits for modern loads takes longer than a sparse older layout.
- Wall type. Fishing wire through open framing is fast; plaster-and-lath or finished, insulated walls are slow and add real labor.
- Accessibility. An open basement and accessible attic make runs easier; a slab foundation or a finished, occupied home makes them harder.
- Permits and inspection. A rewire almost always requires a permit and inspection, which add fees but also verify the work is safe and code-compliant.
- Drywall repair and finishing. Opening walls to pull wire means patching, and sometimes painting, afterward. Ask whether the quote includes this or stops at the electrical.
Typical cost ranges
These are broad 2026 ballpark figures for planning only. Your real quote depends on the home, the region, and the scope. Get an itemized estimate from a licensed electrician.
| Scope | Typical 2026 range | Notes |
|---|---|---|
| Partial rewire (a few circuits or one area) | $2,000 to $6,000+ | Depends on how many runs and wall access |
| Small home full rewire (roughly under 1,200 sq ft) | $8,000 to $12,000+ | Fewer circuits, shorter runs |
| Average home full rewire | $12,000 to $20,000+ | Often about $3 to $8 per square foot |
| Large or plaster-wall home | $20,000 and up | Limited access and finishing add cost |
| Panel / service upgrade (if included) | $1,800 to $4,000+ | Frequently paired with a rewire |
Signs an older home may need rewiring
You cannot diagnose wiring from the outside, but certain clues point toward an inspection by a licensed electrician:
- Knob-and-tube wiring — an early system still found in some pre-1950s homes, often lacking a ground.
- Cloth-insulated wiring whose insulation has become brittle or crumbling.
- Aluminum branch wiring from the 1960s and 1970s, which needs accepted corrective methods.
- Frequent breaker trips, warm outlets or switch plates, flickering lights, or a burning smell.
- Two-prong outlets everywhere, which usually signals an ungrounded system.
If any of these sound familiar, do not start opening walls or pulling wire yourself. Rewiring means working with the home’s branch circuits and often the panel — live-conductor and code-regulated work that belongs to a licensed professional.
Pro tip — time a rewire with other work
Because a rewire opens walls, it is far cheaper to pair it with a renovation, a kitchen remodel, or a period when a room is already gutted. Fishing wire through open framing costs a fraction of what it costs through finished, occupied space.
FAQ
How long does a rewire take?
It varies widely with size and access. A partial rewire can be a few days, while a full rewire of an average home often runs one to two weeks, sometimes longer for large or plaster-wall homes. Living in the home during the work can also stretch the schedule.
Can you rewire a house in stages?
Often yes. Many homeowners phase the work — tackling the highest-risk circuits or one area first — to spread the cost. A licensed electrician can map a sensible sequence and confirm which existing wiring is safe to leave until later.
Does rewiring require permits?
In most areas, yes. A rewire generally needs a permit and one or more inspections, which confirm the work meets the electrical code. That is a protection for you, especially at resale, so treat permitted work as the standard rather than an optional extra.
Will the walls have to be opened up?
Usually to some degree. Electricians fish wire behind finished surfaces where they can, but some access holes are typically needed. Ask up front whether the quote includes patching and finishing, or only the electrical work.
General information for homeowners — not a substitute for a licensed electrician. Electrical work can be dangerous and is regulated by code; always hire a licensed pro and pull required permits. Costs and codes vary by location.
