Kissimmee, FL Whole‑Home Rewiring Cost Guide

Estimated Read Time: 11 minutes

If your home still has knob and tube wiring, you already know the risks: no grounding, brittle insulation, and insurance headaches. This cost guide explains knob and tube wiring replacement cost, what drives price in Florida homes, and how to budget smart. You will learn the exact steps, key code items, and ways to save without cutting corners. Get a free, no‑obligation estimate from Del-Air when you are ready to plan your upgrade.

What Is Knob and Tube Wiring and Why Replace It

Knob and tube, often installed before 1950, uses ceramic knobs and tubes to route single insulated conductors. It has no equipment grounding conductor. Time, heat, and modifications make it unsafe by modern standards.

Key reasons to replace:

1. Safety
   • No ground increases shock risk and can damage modern electronics.
   • Insulation often becomes brittle after decades.
2. Capacity
   • Designed for light loads. Today’s kitchens, HVAC, and EVs strain old circuits.
3. Insurance and resale
   • Many Florida insurers restrict or refuse coverage for homes with active knob and tube. Buyers and inspectors flag it.

Code facts that matter:

• NEC Article 394 covers concealed knob and tube wiring and limits its use.
• NEC 210.12 requires AFCI protection on most dwelling circuits.
• NEC 210.8 requires GFCI protection in wet and damp areas.
• Florida adopts the NEC through the Florida Building Code, Residential. Permits and inspections are required by your local authority.

What Does Knob and Tube Replacement Cost

Most Florida homeowners spend between $8,000 and $20,000 to remove or bypass knob and tube and install code‑compliant wiring. Large or complex homes can exceed $25,000. The price depends on size, access, panel capacity, and finish repairs.

Typical price models:

• By square foot: $8 to $15 per finished square foot affected.
• By circuit: $600 to $1,200 per new circuit including materials and rough‑in labor.

What is usually included:

• New grounded branch circuits with copper NM‑B cable.
• New receptacles, switches, and device boxes.
• AFCI and GFCI protection where required.
• Labeling, permitting, and final inspection.

Cost Drivers You Should Plan For

Every home is unique, but these factors move the needle most.

1. Size and layout
   • More rooms and longer wire runs mean more labor and copper.
2. Access and construction type
   • Attic and crawlspace access lowers cost. Lath and plaster walls increase labor.
3. Panel and service capacity
   • Many knob and tube homes also need a panel upgrade. If your home has only 60A or 100A service, an upgrade to 150A or 200A may be required.
4. Device count and upgrades
   • Adding outlets, dedicated kitchen circuits, bath circuits, and exterior GFCIs adds materials and labor.
5. Finish repairs
   • Drywall or plaster repair and paint can be 10 to 25 percent of the project if many access holes are needed.
6. Permits and inspections
   • Local permit fees often range from $200 to $900 depending on scope and municipality.

Line-Item Budget Ranges in Florida

Use these ranges to build a realistic budget for a typical single‑family home.

• Panel upgrade to 200A: $1,500 to $3,500 including new main breaker, panel, and grounding electrode system.
• New branch circuits with copper NM‑B: $8 to $15 per square foot of finished area touched.
• AFCI breakers: $40 to $70 each for materials, plus labor to install and label.
• GFCI receptacles: $20 to $35 each for materials, plus labor.
• Dedicated kitchen circuits: $350 to $700 per circuit, depending on run length.
• Bathroom 20A circuits with GFCI: $400 to $800 per circuit.
• Smoke and carbon monoxide alarms to FBC R314/R315: $50 to $120 per device plus wiring and interconnect labor.
• Drywall and paint repair: $1,000 to $5,000 depending on patch count and finish level.
• Permit and inspection: $200 to $900 as set by the local authority.

Example Scenarios and What They Typically Cost

Every estimate is custom, but these examples help set expectations.

• 1,200 sq ft bungalow with attic access

  • 10 to 12 new circuits, new receptacles and switches, minor patching.
  • Keep existing 150A panel if in good condition.
  • Typical range: $10,000 to $15,000.

• 1,800 sq ft Orlando block home

  • 14 to 16 new circuits, AFCI breakers, kitchen and bath upgrades, moderate drywall work.
  • Panel upgrade to 200A with whole‑home surge protection.
  • Typical range: $16,000 to $24,000.

• 2,600 sq ft two‑story with plaster walls

  • Longer runs, difficult access, many patches, service upgrade, and lighting redesign.
  • Typical range: $25,000 to $35,000.

How Electricians Replace Knob and Tube Safely

A disciplined process keeps your family safe and the project on schedule.

1. Assessment and planning
   • Map existing circuits, note devices, and identify concealed knob and tube.
   • Load calculations confirm panel and service needs per NEC Article 220.
2. Permits and safety prep
   • Pull electrical permit and schedule required inspections.
   • Protect floors and furnishings. Plan access points to minimize wall damage.
3. Rough‑in
   • Pull new grounded copper NM‑B through attic and walls.
   • Install new boxes, straps, and clamps. Add dedicated kitchen and bath circuits.
4. Protection devices
   • Install AFCI and GFCI as required by NEC 210.12 and 210.8.
   • Add whole‑home surge protection at the service equipment.
5. Cutover and testing
   • De‑energize and remove or isolate old conductors.
   • Test polarity, continuity, and fault protection on every circuit.
6. Inspection and finish
   • Coordinate rough and final inspections.
   • Complete drywall patches and painting as scoped.

How to Save on Knob and Tube Replacement Without Sacrificing Safety

Smart planning can trim thousands without risky shortcuts.

• Bundle upgrades
  • Add surge protection, EV charging circuits, and smoke alarms while walls are open to avoid repeat labor.
• Prioritize rooms
  • Start with kitchen, bath, laundry, and HVAC circuits, then complete bedrooms and common areas.
• Choose strategic access
  • Attic and closet chases reduce patching. Our team plans routes that keep walls intact where possible.
• Use financing
  • Spread payments over time to match your budget without delaying needed safety work.
• Schedule during mild weather
  • In Central Florida, shoulder seasons often mean faster scheduling and less disruption.

Florida-Specific Considerations You Should Know

Local insight prevents surprises and rework.

• Humidity and heat
  • Attic temperatures in Orlando can exceed 120°F in summer. We use proper cable support and derating practices to protect conductors.
• Hurricane season planning
  • Coordinate panel upgrades with surge protection and generator interlock if desired. This reduces outages and protects electronics during storms.
• Smoke alarm and CO rules
  • The Florida Building Code requires interconnected smoke alarms in specific locations. Homes with fuel‑burning appliances also need CO alarms.
• Insurance expectations
  • Many Florida carriers either surcharge or limit coverage when active knob and tube remains. Full replacement with proper documentation helps underwriting.

Hard facts we follow on every job:

• NEC Article 394 restricts concealed knob and tube wiring and does not provide equipment grounding.
• NEC 210.12 requires AFCI protection on most 120‑volt, 15‑ and 20‑amp dwelling circuits.

Signs Your Home Still Has Knob and Tube

If you notice any of the following, a professional assessment is wise.

• Two‑prong receptacles with no ground.
• Porcelain knobs on basement or attic framing.
• Brittle cloth‑covered wire in older junctions.
• Flickering lights or warm switches under load.
• Frequent breaker trips when using kitchen or window ACs.

Permits, Inspections, and Code Compliance

Compliance is not optional. It protects your family, your investment, and your insurance.

• Permit is pulled before work begins, with rough and final inspections scheduled.
• All new work is labeled at the panel and documented for your records.
• We install GFCI and AFCI protection where required and bond the grounding system to code.

How Del-Air Streamlines the Project

One call. One accountable team. Less disruption.

• Full‑service coordination
  • Electrical, HVAC, and plumbing under one roof. If a bath fan, range hood, or water heater circuit needs attention, we handle it in stride.
• Capacity and speed
  • Over 400 fully stocked trucks and same‑day service when available keep your project moving.
• Transparent pricing
  • Free estimates on new systems and upfront pricing. No surprises. Financing available to fit most budgets.
• Maintenance and support
  • Join our Maintenance Agreement Plan for priority scheduling and member discounts on future work.

What To Ask Before You Hire an Electrician

Use this checklist to compare bids and protect your budget.

1. Are you licensed, bonded, and insured in Florida, and will you pull permits?
2. Will you replace all active knob and tube or only portions?
3. Are AFCI and GFCI protections included where required by code?
4. What is your plan to minimize wall damage and handle patching?
5. Can you provide a clear circuit map and panel schedule at completion?
6. What warranty covers materials and workmanship?

Sample Timeline for a Typical Home

Every project is different, but this is a common cadence for a 1,500 to 2,000 sq ft home.

• Day 1: Assessment, planning, and permit submission.
• Days 2 to 4: Rough‑in of new circuits, device boxes, and panel work.
• Day 5: Cutover, testing, and rough inspection.
• Days 6 to 7: Finish work, labeling, and final inspection.
• Day 8+: Drywall and paint touch‑ups if included in scope.

When Replacement Cannot Wait

Certain problems call for immediate action. Call us if you see any of these issues.

• Scorch marks on outlets or switches.
• Burning smell from walls or fixtures.
• Breakers that trip immediately after reset.
• Exposed, brittle conductors in accessible areas.

Your Next Step: Get a Written, Itemized Estimate

A good estimate spells out scope, devices, protection, inspections, and finish work. We provide a detailed line‑item proposal so you know exactly what you are paying for. Most homeowners find this clarity reduces change orders and speeds up approvals with insurance and lenders.

Special Offer

Save on safety today. Get a free, no‑obligation estimate for knob and tube replacement and panel upgrades. Financing options are available to spread payments over time. Call (407) 710-2048 or request service at https://www.delair.com/south-orlando/.

What Homeowners Are Saying

"I just have AC/Heat wiring replaced and run to the attic by DelAir AC technician Roberto Lyva. He did a great job and I am very with the quality of work he did."
–Del-Air Customer, Orlando

"Del-Air was fantastic! Big job for big house! Very knowledgeable and supportive of our needs. Keep up the great work! Couldn't be happier with your services."
–Del-Air Customer, Central Florida

Frequently Asked Questions

How much does it cost to replace knob and tube wiring in Florida?

Most projects land between $8,000 and $20,000, with large or complex homes reaching $25,000 or more. Size, access, panel upgrades, and finish repairs drive cost.

Do I need to replace all knob and tube, or can I leave some in place?

For safety and insurance, active knob and tube should be replaced or fully decommissioned. Partial replacement leaves ungrounded sections and can limit coverage.

Will I need a new electrical panel during the project?

Many older homes do. If your service is 60A or 100A, a 150A or 200A upgrade is common. This supports modern loads and required AFCI and GFCI devices.

Can you rewire without destroying my walls?

Yes. We plan attic and closet runs to reduce cuts. Some access holes are needed, but strategic routing and careful patching limit repairs.

How long does a full replacement take?

Most 1,500 to 2,000 sq ft homes take about one to two weeks from permit to final inspection, plus time for patching and paint if included.

Final Thoughts

Replacing knob and tube wiring protects your family, satisfies insurers, and boosts home value. For a precise knob and tube wiring replacement cost in the Orlando area, schedule your free estimate with Del-Air today. Call (407) 710-2048 or book online at https://www.delair.com/south-orlando/. Ask about financing to make your upgrade affordable.

Ready to Upgrade Safely?

Call (407) 710-2048 or visit https://www.delair.com/south-orlando/ to schedule your free estimate. Secure modern, grounded wiring with AFCI and GFCI protection. Financing available for qualified customers.

About Del-Air Heating, Air Conditioning, Plumbing and Electrical

Since 1983, Del-Air has served Florida with licensed, bonded, and insured electricians and over 400 fully stocked trucks. We are BBB accredited with an A+ rating and offer same-day service and 24/7 emergency support. Our team handles whole-home rewiring, panel upgrades, EV chargers, surge protection, and safety devices with upfront pricing and financing. One call covers HVAC, plumbing, and electrical, so your project stays on time and on budget.