Request Service
Financing Available. Spread out the cost of bigger jobs like panel upgrades, EV chargers and backup power through Synchrony. Ask us about current offers when you book.
Electrical Service CompanyLifetime Craftsmanship
Guarantee450+ 5-Star Reviews
Real People 24/7
Knob and Tube Wiring: The Original Equipment Your House Outgrew
We are the everyday electrician homeowners call for the small fixes, and when an older home still has knob and tube wiring, we take care of that the same careful way. Spartan Home Pros, a locally owned and family operated electrician and HVAC service company, replaces old knob and tube wiring for homeowners across Central New Jersey, fishing new wiring through the walls from the attic and basement so your plaster stays in one piece. Call or text (908) 287-2187. Real people answer 24/7, we pull the permit and handle the town inspection your insurer wants to see, and every job carries our Lifetime Craftsmanship Guarantee. That 1930s wiring was never built for central air, a kitchen full of appliances and an EV in the driveway.
Why it becomes urgent
Three reasons homeowners call us about it. Their insurance company found it and is refusing to renew, or a new insurer will not write the policy at all. A home inspector flagged it during a sale and the deal is wobbling. Or the lights flicker and fuses blow and they finally want to know what is behind the walls. All three end the same way: the old wiring comes out, modern wiring goes in, and the problem is closed permanently.
“We needed to rewire our house and I only trust Spartan Home Pros to do this big project. This is my 2nd time using Spartan Home Pros and they never disappoint me. The electricians arrived promptly and they did their work clean & timely way. …”
The Insulation Problem Nobody Mentions
Knob and tube was designed to shed its heat into open air. When attics get insulated — and every energy upgrade blows insulation exactly there — the old wires end up buried in it, holding heat they were never meant to hold. That combination is specifically prohibited by code. If your attic has been insulated and the house still has old wiring, that alone is reason to have it looked at.
How We Rewire Without Wrecking Your House
Full rewiring does not mean gutted walls. Our crews fish new wiring through existing walls and ceilings, working from the attic and basement, opening only what truly has to be opened and telling you exactly where before we start. We replace the old circuits room by room, so the house stays livable throughout, and every new circuit lands in a modern, properly sized panel. Permit and municipal inspection included — in New Jersey this work requires both, and the inspection paperwork is exactly what your insurer wants to see.
What a Knob and Tube Rewire Day Looks Like
Room by room
We work through the house a few rooms at a time, so you keep power in the rest of the home and can usually stay living there.
Small openings, not torn-out walls
We fish new wiring through the walls and ceilings from the attic and basement and open only small spots where we have to.
Old wiring made safe
Old wiring we cannot pull out is cut off and disconnected so it can never carry power again.
Inspection along the way
The town inspects the new wiring before walls are closed, and again at the end.
Questions to Ask Before You Buy an Older Home
If you are buying a home built before the 1940s, ask the seller or your home inspector whether any knob and tube wiring is still in use, whether the panel has been upgraded, and whether the insurance company has asked about the wiring. We can walk through the house before closing and tell you what you are looking at, so you know what you are buying.
What It Costs
Every old house is different, so this is a walkthrough-first job: we walk the house, scope exactly which circuits are still original, and give you a firm flat price before any work begins — whole house or one urgent section at a time. If you just want to know where you stand, start with our $189.99 service call, with troubleshooting past the panel from $239.99, and you get a straight answer, including the honest case where your wiring turns out to be newer than you feared.
What Our Customers Say
Verified Google reviews from homeowners and businesses across Central New Jersey.
Brands We Install and Service
Electrical
Heating and Cooling
Smart Home and Thermostats
Tesla Certified Installer · Authorized Generac Installer
Serving Central and Northern New Jersey Older Homes
From pre-war colonials in Westfield and Cranford to farmhouses in Chester and Holmdel, we work in older homes every week across Monmouth, Middlesex, Somerset, Union, Morris and Essex County. Real people answer 24 hours a day. Call or text (908) 287-2187.
Could your panel be the real problem? Tripping breakers, flickering lights, warm outlets and power that cuts out often start at an old, full or recalled electrical panel. A panel upgrade fixes the cause, not just the symptom. Most panel upgrades in New Jersey run $2,000 to $7,000, and we give you a flat price before any work starts.
More Services From Spartan Home Pros
Electrical
Heating and Cooling
Meet the Crew
Locally owned and run. This is the team that shows up at your door.
Quick Answers
What is knob and tube wiring?
Knob and tube is the original wiring in many homes built before the 1940s. You’ll see single wires running on white ceramic knobs in the attic or basement. It has no ground wire, the old cloth covering gets brittle, and it was never meant for today’s power use. Knob and tube rewiring.
Is knob and tube wiring safe?
It isn’t automatically dangerous, but after 80+ years it often has brittle covering, DIY splices, or insulation packed around it, which makes it run hot. Many insurance companies won’t cover homes that still have it. Have an electrician check it, and plan to replace it.
See Our Recent Work Near You
Every pin is a real job our crews have photographed on site. Zoom in on your town to see what we have been working on nearby.