Wondering how much it costs to rewire an old house room by room? The average whole-house rewiring project runs between $2,000 and $20,000, with most homeowners paying around $10,000 for a complete rewire. Breaking it down by individual rooms, expect to pay $500 to $4,000 per room depending on size, complexity, and your home's wall type.
The cost to rewire an old house depends heavily on whether you tackle the whole house at once or go room by room. Doing it room by room spreads out the expense and lets you prioritize high-risk areas like the kitchen first. Our team dug into cost data from Angi, Thumbtack, SoFi, and real homeowner reports from Reddit and DIY forums to give you the most accurate breakdown available.
In this guide, you will find a detailed room-by-room cost table that no other resource currently offers. We cover kitchen, bathroom, bedroom, living room, and basement costs individually. We also break down labor versus materials, knob and tube replacement, plaster wall challenges, permit requirements, and real costs homeowners actually paid in 2026.
Whether you live in a 100-year-old house with outdated knob and tube wiring or a 1960s home with aging aluminum wiring, this guide will help you budget accurately. Let us start with the big picture and then zoom into individual rooms.
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The national average to rewire an entire old house falls between $2,000 and $20,000, with most homeowners spending around $8,000 to $15,000 for a complete project. That breaks down to roughly $6 to $10 per square foot of living space, covering both labor and materials.
Smaller homes cost less in total dollars but may have higher per-square-foot costs because the electrician still needs to set up, pull permits, and upgrade the service panel. Larger homes benefit from economies of scale but require more wire, more outlets, and more labor hours.
Here is how the cost to rewire an old house scales with square footage based on current 2026 data from Angi, Thumbtack, and electrician pricing guides:
| House Size (Sq Ft) | Low End | Average Cost | High End |
|---|---|---|---|
| 1,000 sq ft | $3,000 | $6,000 | $10,000 |
| 1,500 sq ft | $4,500 | $9,000 | $15,000 |
| 2,000 sq ft | $6,000 | $12,000 | $20,000 |
| 2,500 sq ft | $7,500 | $15,000 | $25,000 |
| 3,000+ sq ft | $9,000 | $20,000 | $30,000+ |
These ranges assume a full rewire with standard NM cable, new outlets, switch replacements, and any required electrical panel upgrades. Prices climb significantly if your home has plaster walls, knob and tube wiring, or limited attic and crawl space access.
One of the most common questions homeowners ask is whether you can rewire a house one room at a time. The answer is yes, and it is often the smartest approach for budget-conscious homeowners. Breaking the cost to rewire an old house into room-by-room phases lets you tackle the most dangerous areas first while spreading payments over months or years.
Each room has different electrical demands. Kitchens need dedicated circuits for appliances, GFCI outlets near water sources, and higher amperage wiring. Bedrooms require less wiring but need AFCI protection per modern building codes. Bathrooms need GFCI protection and exhaust fan circuits. Understanding these differences helps you budget accurately.
Here is our detailed room-by-room breakdown based on electrician estimates and real homeowner costs:
| Room Type | Low End | Average Cost | High End | Key Electrical Needs |
|---|---|---|---|---|
| Kitchen | $1,500 | $2,500 | $4,000+ | Dedicated circuits, GFCI outlets |
| Master Bathroom | $800 | $1,500 | $2,500 | GFCI protection, exhaust fan |
| Standard Bathroom | $500 | $1,000 | $1,800 | GFCI outlets, lighting |
| Bedroom | $500 | $800 | $1,500 | AFCI protection, outlets |
| Living Room | $600 | $1,200 | $2,000 | Outlets, lighting, switch loops |
| Dining Room | $500 | $900 | $1,500 | Dedicated circuits, lighting |
| Basement | $1,000 | $2,000 | $3,000+ | Full circuit runs, GFCI |
| Garage | $700 | $1,200 | $2,000 | Dedicated circuits, GFCI |
| Laundry Room | $500 | $900 | $1,500 | Dedicated 240V circuit |
| Home Office | $600 | $1,000 | $1,800 | Dedicated circuits, surge protection |
The kitchen is typically the most expensive room to rewire. Modern kitchens require multiple dedicated circuits for the refrigerator, microwave, dishwasher, garbage disposal, range, and any countertop appliances. Electricians typically install at least two to four dedicated 20-amp small-appliance circuits along with GFCI-protected countertop outlets.
Expect to pay between $1,500 and $4,000 for a full kitchen rewire in an older home. The high end applies if you are also adding new recessed lighting, under-cabinet lighting, or an island with electrical outlets. Kitchen rewiring usually takes one to two days of labor.
Bathrooms need GFCI-protected outlets near sinks and tubs, dedicated circuits for hair dryers and space heaters, and proper ventilation fan wiring. A standard bathroom rewire costs $500 to $1,800, while a large master bath with heated floors, multiple lighting zones, and a jetted tub can reach $2,500 or more.
Moisture resistance is critical in bathroom wiring. Electricians must use properly rated fixtures and ensure all connections meet current National Electrical Code requirements for wet locations.
Bedrooms are relatively straightforward to rewire since they typically need standard 15-amp or 20-amp circuits, AFCI-protected outlets, switch-controlled lighting, and closet lighting. Most bedrooms cost between $500 and $1,500 to rewire, depending on the number of outlets, ceiling fan installations, and whether smoke detectors need hardwiring.
If your home was built before smoke detector requirements were enacted, your electrician will likely recommend hardwired interconnected smoke detectors during the rewiring process. This adds about $100 to $300 per bedroom.
Living rooms and dining rooms typically cost between $500 and $2,000 each to rewire. These rooms need standard outlets, switch loops for lighting, and possibly dedicated circuits for entertainment systems or window air conditioning units. Older homes often have too few outlets, so homeowners frequently add outlets during rewiring.
Dining rooms sometimes require dedicated circuits for chandeliers or buffet serving areas. If you are adding recessed lighting or ceiling fan installations, budget an additional $200 to $600 per fixture.
Basements and garages in old houses frequently have the most outdated and dangerous wiring. Expect to pay $1,000 to $3,000 for a basement rewire and $700 to $2,000 for a garage. Both spaces require GFCI protection on all outlets and dedicated circuits for laundry equipment, freezers, or power tools.
If your basement is unfinished, the rewiring process is actually easier and cheaper because the electrician has direct access to floor joists for running cables. Finished basements require more labor to fish wires through finished ceilings and walls.
The cost to rewire an old house varies significantly based on several key factors. Understanding these variables helps explain why one homeowner pays $5,000 and another pays $40,000 for what seems like the same project.
House size and age are the biggest cost drivers. Larger homes need more wire, more outlets, and more labor hours. Older homes built before 1950 often have more complex rewiring needs because of outdated wiring methods and decades of amateur modifications layered on top of original installations.
Wall type dramatically impacts labor costs. Plaster walls with wood lath require careful fishing of wires or partial wall removal, which then needs repair. Drywall is easier to cut and patch. Expect plaster wall rewiring to add 20% to 40% to your total cost compared to drywall.
Accessibility matters too. Homes with generous attic access, unfinished basements, and crawl spaces allow electricians to run wires more easily. Homes without these access points require more time-consuming methods like cutting access holes in walls.
Geographic location plays a major role. Electrician rates in high cost-of-living areas like California, New York, and the Pacific Northwest run 30% to 50% higher than in the Midwest or South. A project that costs $10,000 in Ohio might cost $18,000 in the San Francisco Bay Area.
Scope of work is the final major factor. Are you doing a full rewire or just replacing knob and tube in a few rooms? Adding a panel upgrade? Installing smart home features? Each additional scope item adds to the total.
Labor makes up the lion's share of any rewiring project, typically accounting for 50% to 70% of the total cost. Materials account for the remaining 30% to 50%. This split surprises many homeowners who assume the wire and outlets are the biggest expense.
Licensed electricians charge between $50 and $100 per hour depending on your location, with the national average around $75 per hour. A full house rewire takes 40 to 80 labor hours, sometimes more for complex older homes with plaster walls.
Here is what the material side looks like for a typical rewiring project:
| Material | Cost Range | Notes |
|---|---|---|
| NM cable (Romex) | $0.40-$0.80 per foot | 14/2 and 12/2 gauge most common |
| GFCI outlets | $15-$35 each | Required near water sources |
| AFCI breakers | $35-$60 each | Required for bedroom circuits |
| Standard outlets | $3-$8 each | 15 amp or 20 amp |
| Light switches | $5-$15 each | Single pole or three-way |
| Junction boxes | $2-$8 each | Plastic or metal |
| Service panel (200 amp) | $500-$1,500 | Includes breakers |
| Conduit (if required) | $1-$3 per foot | Basements and garages |
For a 2,000-square-foot home, materials alone typically run $2,000 to $5,000. The remaining cost is labor, permits, and overhead. This is why rewiring is one of the more expensive home improvement projects.
Old wiring does not just cause inconvenience. It is one of the leading causes of house fires in the United States. Recognizing the warning signs early can protect your family and save you from a catastrophic electrical failure.
Here are the most common signs that your old house needs rewiring:
1. Frequent circuit breaker trips indicate that your electrical system cannot handle the load. Modern homes need far more power than old wiring was designed to deliver. If your breakers trip regularly when you run multiple appliances, your wiring may be outdated or overloaded.
2. Flickering or dimming lights suggest loose connections or overloaded circuits. If lights flicker when you turn on another appliance, the circuit is struggling. This is especially common in kitchens and living rooms of older homes.
3. Warm or discolored outlets and switch plates are serious warning signs. Heat buildup at an outlet means resistance in the connection, which can lead to arcing and fire. If you feel warmth when touching an outlet or see discoloration, call an electrician immediately.
4. Two-prong outlets throughout the house indicate your home has no ground wire. Two-prong outlets cannot safely handle modern three-prong plugs and provide no protection against power surges. Most old homes need at least GFCI upgrades if full rewiring is not immediately possible.
5. Knob and tube or aluminum wiring in your walls is a red flag. Knob and tube wiring, common in homes built before 1950, has no ground wire and uses rubber insulation that degrades over time. Aluminum wiring, common in homes built between 1965 and 1973, is prone to loose connections and fire hazards at termination points.
6. Burning smell or unusual odors near outlets, switches, or your electrical panel require immediate attention. This smell often indicates melting wire insulation or arcing. Shut off power to the affected area and call an electrician right away.
7. Old rubber-insulated wiring that is cracked or brittle is a fire waiting to happen. If an electrician or home inspector finds degraded insulation during an inspection, rewiring should be a priority.
Knob and tube wiring was the standard electrical wiring method in North American homes from roughly 1880 to the 1940s. If your old house was built before 1950, there is a good chance it still has knob and tube wiring hidden behind walls and above ceilings.
The system uses ceramic knobs to hold wires in place and ceramic tubes to protect wires as they pass through wood framing. The wires are spaced apart and air-cooled, which means they cannot be buried in insulation. This creates a dangerous situation when homeowners add attic or wall insulation over existing knob and tube runs.
Why is knob and tube dangerous? The wiring has no ground wire, making it unsafe for modern three-prong appliances. The rubber and cloth insulation degrades over decades, becoming brittle and falling off. Exposed bare wires then arc against wood framing, creating a fire hazard. Knob and tube circuits were also designed for much lower electrical loads than modern homes demand.
Insurance implications are significant. Many insurance companies will not write new policies on homes with active knob and tube wiring, or they charge substantially higher premiums. Some require a full knob and tube replacement before binding coverage. If you are buying an older home, check with insurance providers before closing.
Cost to replace knob and tube wiring: Expect to pay $8,000 to $15,000+ for a complete knob and tube replacement in a typical 1,500 to 2,000-square-foot home. The cost runs higher than a standard rewire because the old wiring must be carefully removed and the system was not designed for modern circuit routing.
One Reddit homeowner shared a quote of $1,000 to $2,000 for complete knob and tube replacement, though this was for a smaller home and likely several years old. Most current quotes for full knob and tube removal in larger homes fall in the $12,000 to $20,000 range.
Most old house rewiring projects include an electrical panel upgrade. Old homes typically have 60-amp or 100-amp service panels, which are inadequate for modern electrical demands. Today's homes generally need at least 150 amps, with 200 amps becoming the standard for homes with electric ranges, central air conditioning, and electric vehicle chargers.
100-amp panel replacement costs between $1,500 and $3,000 if your existing service entrance is adequate. This covers the new panel, breakers, and labor.
200-amp panel upgrade costs between $2,000 and $4,500 depending on whether the utility company needs to upgrade the service drop from the pole. If trenching is required for underground service, add $2,000 to $5,000.
One Reddit homeowner reported paying $4,500 for a new main panel, $2,500 for trenching, and $5,500 for outlet and switch replacement. That breakdown gives you a realistic picture of how panel and rewiring costs stack up.
If your home still has a fuse box rather than a circuit breaker panel, budget for a full panel replacement. Modern code does not allow fuse boxes in new installations, and most insurance companies require their replacement.
Every electrical rewiring project requires a permit from your local building department. Working without a permit is illegal and creates problems when selling your home or filing insurance claims.
Permit costs typically range from $100 to $500 depending on your municipality and the scope of work. Your electrician usually handles permit acquisition and includes the cost in their quote.
After rewiring is complete, a building inspector must verify that all work meets current electrical code. This typically involves a rough-in inspection (before walls are closed) and a final inspection (after all devices are installed).
Failing an inspection means corrections must be made before the project can be signed off. Licensed electricians rarely fail inspections because they know local code requirements. This is one reason hiring a professional saves money in the long run.
If your old house has plaster walls over wood lath, expect to pay significantly more for rewiring. Plaster walls make it harder to fish new wires through wall cavities because the lath creates friction and the plaster itself is thick and fragile.
Drywall homes are easier to work with. Electricians can cut precise access holes, fish wires, and patch the holes quickly. Drywall repair after rewiring typically adds $200 to $600 per room.
Plaster wall homes may require more invasive approaches. Electricians often need to cut larger access holes or remove and replace sections of plaster. Repair costs for plaster run 30% to 50% higher than drywall repair. Budget an extra $500 to $2,000 for plaster repair across a typical whole-house project.
Some electricians use a technique called "fishing" to minimize wall damage. They drill small holes at the top and bottom of wall cavities and use specialized tools to guide wire through. This works in some homes but not all, especially those with fire blocking or diagonal bracing in the walls.
Rewiring is expensive, but there are legitimate ways to reduce the cost without cutting corners on safety. Here are our top strategies based on electrician recommendations and homeowner experiences:
1. Get at least three quotes. Pricing varies significantly between electricians. One Reddit homeowner received quotes ranging from $12,700 to $25,162 for the same 1,400-square-foot home. That is a $12,000 difference for identical work. Always get multiple quotes and ask for itemized estimates.
2. Rewire room by room. If a full rewire is not financially feasible, start with the most dangerous rooms. Kitchens and bathrooms with knob and tube wiring near water sources should be the priority. Spread remaining work over two or three years.
3. Do your own prep work. Remove furniture from rooms before the electrician arrives. Take down pictures, remove outlet covers, and clear access to your attic and crawl space. Every hour of labor you save on prep work is money in your pocket.
4. Avoid peak season. Electricians are busiest in summer and early fall. Scheduling your project for winter or early spring may get you a better rate, especially for larger projects.
5. Bundle electrical projects. If you also need ceiling fan installations, smart home wiring, or EV charger installation, bundle them with your rewiring project. Electricians often offer better pricing when you combine multiple services into one visit.
6. Open walls yourself. If you are comfortable doing demolition work, offer to handle wall opening and patching yourself. This can save $1,000 to $3,000 on labor. Your electrician handles the wiring, and you handle the drywall or plaster repair.
A full house rewire typically takes 5 to 14 days depending on house size, wall type, and accessibility. Here is a rough timeline breakdown:
1,000 to 1,500 sq ft: 5 to 7 working days
1,500 to 2,000 sq ft: 7 to 10 working days
2,000 to 2,500 sq ft: 10 to 14 working days
3,000+ sq ft: 14 to 21 working days
Individual rooms take less time. A single kitchen rewire usually takes 1 to 2 days, a bedroom 4 to 8 hours, and a bathroom 6 to 12 hours. Plan accordingly if you are tackling the project room by room.
You can usually stay in your home during rewiring, but expect significant disruption. Power will be shut off periodically, furniture needs to be moved, and walls may have access holes for several days. Some homeowners choose to stay elsewhere during the noisiest phases.
We scoured Reddit, BiggerPockets, Bogleheads, and DIY forums to find out what homeowners actually paid for rewiring. Real-world costs vary widely, but these data points give you a realistic sense of pricing:
One Reddit homeowner paid $10,000 to rewire a 1,100-square-foot home, with a half-house job costing $4,000 not including the panel replacement. Another Bay Area homeowner received quotes of $18,000 to $35,000 for whole-house rewiring with a new breaker panel and drywall repair.
A homeowner with a house requiring extensive work reported $12,700 for rewiring the entire house without gutting it, noting the project was very labor intensive. On the high end, a BiggerPockets user documented $47,560 in total electrical costs including labor and materials for a full rewire.
Another Reddit user shared a $25,162 quote for a two-story, 1,400-square-foot 1935 home, while another reported $40,000 total after everything including a main panel replacement and trenching. These real numbers confirm that the cost to rewire an old house can swing dramatically based on location, home condition, and scope.
Yes, you can absolutely rewire a house room by room. Many electricians recommend this approach for budget-conscious homeowners. Start with the highest-risk rooms like kitchens and bathrooms that have knob and tube wiring near water sources. Each room becomes an independent project with its own permit and inspection. The main consideration is that your electrical panel must have enough breaker slots to accommodate new circuits as you add them over time.
Rewiring a 100 year old house typically costs between $8,000 and $20,000 for a complete project. Homes this old usually have knob and tube wiring, plaster walls, and undersized service panels, all of which drive up costs. The national average for a 1,500-square-foot century home is around $10,000 to $12,000, but prices in high cost-of-living areas can reach $25,000 or more.
Yes, rewiring an old house is almost always worth it. Old wiring is a leading cause of house fires, and outdated systems cannot safely handle modern electrical loads. Rewiring also reduces insurance premiums, increases home value, prevents denied claims, and gives you peace of mind. Most homeowners recoup 50% to 75% of rewiring costs in increased home value.
Yes, skilled electricians can rewire a house without removing drywall by using a technique called fishing. They drill small access holes at the top and bottom of wall cavities and use specialized tools to guide new wire through. However, this method takes longer, costs more in labor, and may not be possible in homes with fire blocking or diagonal wall bracing. Some drywall cuts are usually unavoidable.
Replacing knob and tube wiring typically takes 7 to 14 days for an average-sized home of 1,500 to 2,000 square feet. The process is slower than standard rewiring because the old wiring must be carefully traced and removed. Homes with plaster walls take longer because the electrician needs extra time to fish wires through lath. Larger homes or homes with access challenges may take up to 3 weeks.
Understanding the cost to rewire an old house room by room gives you the power to plan strategically instead of being overwhelmed. Whether you pay $5,000 for a partial upgrade or $30,000 for a complete rewire, the investment pays off in safety, insurance savings, and home value.
Our recommendation is simple. Get three quotes from licensed electricians, prioritize the most dangerous rooms first, and tackle the full project over time if needed. The room-by-room approach works for both your budget and your schedule.
Safety comes first. If your home has knob and tube wiring, aluminum wiring, or a fuse box, do not delay. The cost of rewiring is always less than the cost of a house fire. Contact a licensed electrician in your area today for an inspection and quote.