Upgrading your home’s electrical system is one of the most significant investments you can make in your property’s safety and value. However, ‘how much will it cost?’ is just the first of many questions. To help Kansas City homeowners plan their projects with confidence, we’ve updated our guide to cover the full spectrum of whole-house wiring. Below, we explore the latest average costs for different home sizes, what to expect during the installation process, how long the project will actually take, and the critical factors that influence your final investment.

Signs It Is Time to Update Your Home’s Electrical Wiring

There are multiple factors that influence how much electrical wiring will cost, but let’s begin with the warning signs that your electrical system will give to you that indicate rewiring is necessary.

• If your electrical system is repeatedly blowing fuses or tripping circuit breakers, then it’s likely an old or faulty system that needs to be replaced.
• Lights that appear to constantly dim or flicker suggest that the wiring should be redone. Further, if light bulbs are frequently burning out in shorter lifespans than they are supposed to, this could be a sign that the wiring needs to be replaced.
• If outlets or switches produce any sort of spark when an appliance is plugged or unplugged or the switch is flipped, then you should heavily consider rewiring.
• If any outlets are covered in a strange black coating, have scorch marks, or even have smoke coming from the outlet, then you need to look into immediate rewiring for your safety and everybody in the household.

All the signs that indicate rewiring is necessary must be followed with caution. These can be extreme safety hazards to the home and all those in it.

The Average Cost of Whole-House Rewiring in Kansas City

What Factors Influence the Cost?

• Size and Age of the Home: A sprawling, multi-story historic home will naturally cost more to rewire than a single-story ranch due to the sheer volume of materials and labor required.
• Accessibility: If your electrician can easily access wiring through an unfinished basement, crawlspace, or attic, labor costs will be lower. If they have to cut through lath and plaster walls, expect the price to increase.
• Electrical Panel Upgrades: If you are upgrading your wiring, you will likely need to upgrade your electrical panel to a 200-amp system to handle the new load safely.
• Drywall Repair: Remember that rewiring requires opening up walls. You will need to budget for drywall patching and painting once the electrical work is finished.

Smaller Homes

For smaller homes, considered to be anywhere from 1,000 to 1,500 square feet, costs can run from $10,000 to $20,000.

Larger Homes

Large homes that are 3,000 square feet or more will cost between $25,000 and $40,000 to rewire.

Of course, these rates are subject to change depending on where you live, the number of rooms that need rewiring, and the number of materials and labor going into this project.

Pro Tip: Think of rewiring not just as an expense, but as a massive boost to your home’s safety, energy efficiency, and resale value. It can even lower your homeowner’s insurance premiums!

Do I Have To Rewire My Entire Home?

It’s very possible that you only need a portion of your home rewired rather than the entire home.

If the warning signs for needing rewiring mentioned previously are only occurring in a very localized area in the home, then it may be possible to just rewire that area rather than the entire home.

Cost of Partial Home Rewiring

Similar to the cost of entire home rewiring, there are factors that will influence whether the cost of rewiring is lower or higher.

If the portion of your home needing rewired is a small portion, such as a single room, the overall cost is going to be a lot cheaper than an entire home with nine rooms needing rewiring.

The number of rooms or areas that need to be rewired will affect the cost, so the fewer rooms, the cheaper the rewiring cost.

I Want to Find Out The Cost Of My Whole House Wiring!

Additional Signs its Time for a Home Electrical Wiring Update

If you notice any of the following symptoms, your home’s wiring may be struggling to keep up with your power demands.

• Over reliance on Extension Cords: Frequent use of extension cords creates trip hazards and risks shorts from pinched wires. If you’re constantly reaching for a cord, it’s time to install permanent, professional outlets.
• Strange Smells: While new appliances may have a slight “break-in” odor, your outlets and breaker panel should never smell. If you detect a burning plastic scent, unplug everything and call an expert immediately.
• Flickering or Dimming Lights: Most fixtures draw minimal power. If they flicker, it usually means a larger appliance is overloading the circuit or the wiring is failing to maintain a steady current.
• Buzzing or Sparks: Electricity should be silent. Buzzing sounds or visible sparks indicate loose wires or “jumping” currents—both of which are significant fire hazards.
• Hot Outlets or Switch Plates: While appliances like toasters generate heat, the outlet itself should remain cool. A warm-to-the-touch switch or outlet is a clear sign of a wiring malfunction.

Safety First: Never ignore these symptoms. Electrical issues don’t resolve themselves; they only become more dangerous over time.

What Can I Expect During a Home Electrical Re-Wiring?

Rewiring is a significant investment in your home’s safety. While every project is unique, most follow this professional roadmap:

1. Assessment and Custom Planning

The process begins with a thorough electrical audit. A licensed electrician will evaluate your current system and provide a detailed, transparent quote. From there, we design a custom electrical plan that maps out your new circuits, ensuring they meet both your lifestyle needs and local safety codes.

2. Permits and Preparation

To ensure your project is legal and up to code, we handle the bureaucracy for you. This includes securing the necessary city permits and coordinating the project timeline to minimize disruption to your daily routine.

3. The Installation Phase

• Temporary Power Shutdown: For safety, power must be disconnected while we work. Our team works efficiently to ensure this period is as short as possible.
• Out with the Old, In with the New: We meticulously remove outdated wiring and replace it with modern, high-efficiency alternatives. This usually includes upgrading your outlets, switches, and recessed lighting.
• Panel and Service Upgrades: To support your new wiring, we typically replace your electrical panel and upgrade your service to meet current modern power demands.

4. Restoration and Final Inspection

Once the new system is in place, we restore power and test every circuit. The final step is a city safety inspection. We coordinate this visit to certify that your new system is 100% compliant, safe, and ready to power your home for decades to come.

Awesome Home Electrical Upgrades to Consider

If you are already opening up your walls for a rewire, it is the perfect time to integrate modern convenience into your home. Consider adding these awesome upgrades:

• Whole-Home Surge Protection: Protect your expensive smart TVs, computers, and appliances from lightning strikes and power grid surges directly at the breaker box.
• USB Receptacles: Eliminate bulky charging blocks by installing outlets with built-in USB-A and USB-C ports in your kitchen, office, and bedrooms.
• Smart Switches and Dimmers: Upgrade to smart lighting that you can control via your smartphone or voice assistant. Set schedules for security and dimmers for ambiance.
• Dedicated Circuits for Heavy Appliances: Give your deep freezer, space heaters, or home gym equipment their own dedicated circuits to prevent overloads.

Taking It Outside: Backyard and Exterior Electrical Wiring

Your electrical needs don’t stop at your back door. However, exterior electrical wiring is entirely different from the wiring inside your Kansas City home.

Indoor vs. Outdoor Wiring

Inside, standard Romex wiring is protected by your walls. Outside, electricity faces a brutal combination of rain, snow, UV rays, and extreme temperature fluctuations. Exterior wiring requires specialized UF (Underground Feeder) cables which are encased in solid plastic to resist moisture and rot. Additionally, outdoor wiring is often run through heavy-duty PVC or metal conduit for extra physical protection against lawnmowers or digging.

GFCI Protection is Mandatory

Any outdoor outlet must be a Ground Fault Circuit Interrupter (GFCI) outlet and enclosed in a weatherproof cover. GFCIs instantly cut power if moisture is detected, preventing fatal electrical shocks.

Backyard Upgrades to Elevate Your Space

• Outdoor Kitchens: You will need heavy-duty, weather-rated circuits to power outdoor refrigerators, electric grills, and beverage coolers.
• Pools and Hot Tubs: Water and electricity are a lethal mix. These require highly specialized, code-compliant sub-panels and grounding systems.
• Landscape and Security Lighting: Transform your backyard into a nighttime oasis with low-voltage landscape lighting, and boost your home’s security with motion-activated floodlights.

Home Electrical Wiring in Kansas City

Whether you are rewiring an old electrical system or building a new home and adding electrical wiring, we would be thrilled to assist you with any questions or installation duties you may have for us.

Fusion Electric serves those in all residential and commercial electrical services throughout the Overland Park and Kansas City Metro area. Whether you’re looking to add wiring to your home or commercial business or seeking further advice on your current electrical system and wiring, we are happy to help you.

Our top-notch customer service is demonstrated through our high rating of an “A+” from the Better Business Bureau (BBB).

Let our qualified electricians at Fusion Electric wire or rewire your electrical system throughout your home for efficiency and safety. Contact Fusion Electric today to see how much your whole house wiring will be for your home and a timeline for how long wiring will take!

Electrical Wiring FAQs

Can I Install Outdoor Lighting and Outlets Myself?

While low-voltage garden or path lighting can often be a DIY project, high-voltage exterior work requires a professional. Installing outdoor outlets involves tapping into your home’s main electrical panel or splicing existing internal circuits. Because these outlets must be GFCI-protected to meet Kansas City safety codes and withstand moisture, professional installation ensures your system is grounded, weatherproofed, and fire-safe.

Do Hot Tubs and Pool Filters Need Special Wiring?

Yes. Water and electricity are a dangerous combination, and equipment like pool filters and hot tubs almost always require a dedicated 240V circuit tied directly to your main breaker box. Due to the high voltage and strict grounding requirements involved, this work should always be handled by a licensed electrician to prevent the risk of electrical shock.

How Do I Know If My Home Actually Needs a Full Rewire?

While age is a major factor, it isn’t the only one. If your home was built before 1980, it likely has wiring (such as cloth-insulated, knob-and-tube, or aluminum) that was never designed to handle the 2026 power demands of EV chargers, smart appliances, and home offices.

Google data shows that most homeowners search for rewiring only after noticing these three “critical” red flags:

1. Frequent Breaker Trips: If your panel “pops” once a week or more, it’s a sign that your circuits are physically incapable of carrying the load you’re demanding.
2. The “Burning Plastic” Odor: This is the #1 searched electrical symptom. It indicates that wire insulation is melting behind your walls—a major fire hazard that requires an immediate professional inspection.
3. Two-Prong Outlets: If your home still has two-prong outlets, your system lacks a ground wire. This leaves your expensive modern electronics (like 4K TVs and computers) vulnerable to total failure during a power surge.

The Bottom Line: If your wiring is 40+ years old or you are experiencing “flickering” when the microwave or AC kicks on, a professional rewiring is the only way to ensure your family’s safety and your home’s insurance eligibility.