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How Much Does Knob and Tube Wiring Replacement Cost in Massachusetts?

If your home still has knob and tube wiring, you’re not alone—many older homes across Massachusetts still rely on this early electrical system. But because it was installed from the late 1800s through the 1930s, it was never designed to support modern appliances, HVAC systems, or today’s electrical loads. At Kuhlman Electric™, one of the first questions homeowners ask us when considering an upgrade is: how much does knob and tube wiring replacement actually cost?

What Affects the Cost of Knob and Tube Replacement?

The cost of replacing knob and tube wiring in Massachusetts can vary widely because every home is different. In general, pricing depends on a few key factors:

Home size and layout – Larger homes or multi-story properties require more wiring and labor.
Accessibility – Homes where wiring is harder to access through finished walls, ceilings, or tight spaces can require more time and effort.
Scope of the project – Some homes only need partial rewiring, while others require a full system replacement.
Existing electrical conditions – Older or mixed wiring systems can add complexity to the project.

Because of these variables, most homeowners won’t receive an exact number until a licensed electrician evaluates the home in person.

Typical Cost Range for Knob and Tube Replacement in Massachusetts

According to Angi, the cost to replace knob and tube wiring in Massachusetts usually falls between $12,000 and $36,600 for a full-home project, depending on the size and complexity of the home.

This wide range reflects how different each home can be. A smaller home with easier access to existing wiring will generally be on the lower end, while larger homes, older construction, or properties with wiring hidden behind finished walls often require more labor and fall toward the higher end of the range.

Because no two homes are the same, the only way to determine exact pricing is through an on-site evaluation and written estimate from a licensed electrician.

Why Knob and Tube Replacement is Worth the Investment

Although the upfront cost can feel significant, replacing knob and tube wiring offers homeowners in Massachusetts several long-term benefits, such as:

Improved electrical safety and reduced fire risk
Better compatibility with modern appliances and technology
Increased home value and buyer confidence
Fewer insurance complications in many cases
The ability to safely add new circuits or upgrades in the future

Many homeowners find that the value added to their home, along with improved peace of mind, outweighs the initial investment.

How to Make Knob and Tube Wiring Replacement More Affordable

In some cases, Massachusetts homeowners may be eligible for support through programs like Mass Save, depending on the scope of work and qualifications. Mass Save is a state-backed energy efficiency program that can help offset the cost of approved home upgrades, including certain electrical improvements tied to safety and energy use. Eligibility varies, and an experienced local electrician from Kuhlman Electric™ can help you determine whether your project may qualify and guide you through the next steps of the process.

Get a Free Estimate for Knob and Tube Replacement

The best way to understand what knob and tube replacement will cost is to have it evaluated by a professional. At Kuhlman Electric™, we specialize in knob and tube wiring replacement and have completed hundreds of projects across Eastern and Central Massachusetts as well as Southern New Hampshire. Our expert electricians will assess your home, explain what needs to be updated, and provide a clear, written estimate so you know exactly what to expect.

If you’re ready to take the next step toward a safer, more modern electrical system, contact Kuhlman Electric™ today to schedule an in-home knob and tube evaluation.