Knob-and-Tube Wiring Replacement in Port St. Lucie, FL | Old Wiring Replacement
PSL Whole House Rewiring replaces knob-and-tube wiring in Port St. Lucie, FL, for older homes with outdated electrical systems. We track down the old circuits, check their condition, and replace them with modern wiring.
What we do:
• Knob-and-tube wiring removal
• Old electrical circuit replacement
• New copper branch wiring
• Ungrounded outlet upgrades
• Attic and wall wiring replacement
• Electrical connection testing
Knob-and-tube wiring replacement typically costs $12,000 to $35,000 for a full home, while smaller replacement jobs may cost less. The final price depends on how much old wiring remains and how difficult it is to reach.
Found old wiring in your home? Contact PSL Whole House Rewiring for a free quote. We'll check what you're dealing with and explain your replacement options.
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Knob-and-Tube Wiring Replacement Projects in Port St. Lucie
Old Attic Wiring Replacement in Port St. Lucie, FL 34952
An older 950-square-foot home had several active knob-and-tube circuits running through the attic. The wires still used porcelain supports, and parts of the insulation had become brittle. The project replaced the affected lighting circuits with new copper cables, proper junction boxes, and updated connections.
Turnaround Time: Approximately 3–5 working days
Estimated Price: $5,200
Historic Cottage Rewiring in Port St. Lucie, FL 34952
A small relocated cottage had original knob-and-tube wiring behind its plaster walls. During renovations, the owner decided to replace the old electrical system rather than keep making repairs. New grounded branch circuits were routed through accessible framing, with extra care around the plaster finishes.
Turnaround Time: Approximately 7–10 working days
Estimated Price: $14,800
Mixed Wiring System Replacement in Port St. Lucie, FL 34983
An older relocated house had a mix of newer cables and original knob-and-tube circuits left from previous renovations. Some bedrooms had updated outlets, but the lighting circuits still used old wiring. The work involved tracing those connections, replacing the remaining active knob-and-tube runs, and testing the updated circuits.
Turnaround Time: Approximately 5–8 working days
Estimated Price: $9,600
Knob-and-Tube Wiring Replacement Process
in Port St. Lucie, FL
01
Locate Old Wiring
We trace the existing circuits and check for porcelain knobs, ceramic tubes, and aging wire insulation. PSL Whole House Rewiring also looks for old connections hidden in attics or walls to determine which circuits are still active.
02
Plan Cable Routes
Older homes weren't built with modern wiring routes in mind. We identify practical paths for new cables, check the existing electrical panel, and arrange the required permits. Any necessary wall openings are discussed before installation.
03
Replace Old Circuits
Our electricians disconnect the affected circuits and install new copper wiring with proper grounding and protected connections. Accessible old wiring is removed where practical, while any disconnected wiring left behind is identified and secured as required.
04
Check New Connections
After installation, we test the replacement circuits, check outlet connections, and verify that the old wiring is no longer supplying power. PSL Whole House Rewiring also coordinates required inspections and reviews the finished electrical work with you.
Why Choose PSL Whole House Rewiring for
Knob-and-Tube Wiring Replacement
Old wiring can be tricky, especially when previous owners have made electrical changes over the years. We take the time to
find what's actually connected and plan replacements that make sense for your home.
Find Hidden Old Circuits
Old and new wiring sometimes share the same house. We trace the connections carefully so active knob-and-tube circuits aren't overlooked during replacement.
Respect Older Homes
Plaster walls and original finishes deserve extra care. We look for practical cable routes that limit unnecessary openings while getting the new wiring where it belongs.
Address Previous Wiring Changes
Older electrical systems often have additions from different decades. PSL Whole House Rewiring checks these connections and explains what needs correcting as part of the replacement.
Understand Your Options
You shouldn't have to guess how much old wiring remains. We explain the affected circuits, what replacement involves, and any related work before you commit.
Knob-and-Tube Wiring Replacement FAQs
Knob-and-tube wiring replacement costs $12,000 to $35,000 for a full home, although smaller jobs cost less. The amount of old wiring and access through finished walls make a big difference. PSL Whole House Rewiring checks the existing circuits first, so your estimate reflects the work your property actually needs.
Knob-and-tube wiring in older homes may be dangerous when insulation deteriorates, connections are modified incorrectly, or wires become surrounded by insulation. The original system also lacks an equipment grounding conductor. That's why an inspection from PSL Whole House Rewiring focuses on the wiring's condition rather than its age alone.
You can replace only part of your knob-and-tube wiring when an electrical assessment confirms that a limited replacement is appropriate. However, leaving active older circuits may create concerns for future renovations or insurance coverage. At PSL Whole House Rewiring, we'll explain what remains and how partial replacement affects your electrical system.
Knob-and-tube wiring affects home insurance in Florida because some insurers restrict coverage for properties with active older wiring. Their requirements vary, so it's worth checking with your insurer before making decisions. PSL Whole House Rewiring can discuss the electrical replacement scope, but your insurance company determines what documentation it needs.
You may need to open some walls to replace knob-and-tube wiring, particularly when old cables run through finished rooms. Attics and other accessible spaces may reduce the number of openings needed. Before installation, PSL Whole House Rewiring reviews possible cable routes with you so there are fewer surprises.