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September 18, 2026
Insurance companies and electrical codes are tightening their grip on knob and tube wiring. Rhode Island homeowners need to know what is changing, along with why it matters right now.
If you own a home in Rhode Island built before 1950, there is a reasonable chance it still has knob and tube wiring somewhere inside its walls. You may have lived with it for years without incident. However, something has shifted, extending beyond the wiring simply getting older. Insurance companies are tightening their standards. Rhode Island’s electrical code is drawing clearer lines. And homeowners who thought their system was grandfathered in are finding out that the term grandfathered does not mean what it used to. Here is what is happening, alongside what it means for your home.
Knob and tube wiring was the standard from roughly 1880 through the 1940s. It did its job for the homes of that era, which featured far fewer electrical demands than anything we plug in today. The problem is not just age. It is that the system was designed for a world that no longer exists, and the people and institutions responsible for managing risk have started treating it accordingly.
Rhode Island has adopted the 2020 National Electrical Code through its state electrical code, RISBC-5, and the Rhode Island Building Code Commission has issued a formal interpretation specifically on Article 394, which governs knob and tube wiring. That is not background noise; it is a signal that regulators are paying closer attention to these systems, rather than ignoring them.
The most immediate pressure most Rhode Island homeowners feel is not coming from a code inspector, but rather from their insurance company. Insurers have been quietly tightening their underwriting standards around knob and tube wiring for years, turning what used to be a simple note in the file into a strict deadline.
When an insurer flags knob and tube wiring during a policy renewal, a home sale inspection, or a property review, homeowners are typically given 30 to 60 days to address the issue or face policy cancellation. That is not a lot of time. Losing your homeowner’s insurance is not just inconvenient, because if you have a mortgage, your lender requires coverage. A gap in coverage can trigger a forced-place insurance policy, which costs significantly more and covers significantly less.
Some insurers are charging more than double the standard premium for homes with active knob and tube wiring. Others are refusing to write new policies on these properties altogether. The practical reality is that the insurance industry has moved ahead of the electrical code on this issue, and Rhode Island homeowners are feeling the impact.
The distinction insurers care about is identifying if the wiring is active or inactive. Active knob and tube circuits, meaning ones that are still carrying current, represent the main concern. Circuits that have been properly decommissioned are treated differently. However, properly is the operative word. A handwritten note from a previous owner saying the wiring was addressed does not satisfy an insurer. A Certificate of Insurance from a licensed Master Electrician documenting the completed work does.
That documentation piece matters more than most homeowners realize when they start this process. The goal is not just to remove the wiring, but to close the loop with your insurance company so the threat to your coverage is resolved.
This is one of the most common questions we hear, and the honest answer is that it depends on your specific situation, especially as the regulatory landscape shifts.
Existing knob and tube wiring in a home that is not being renovated is not automatically a code violation in Rhode Island. That is the grandfathering principle, meaning systems installed legally under older codes are not required to be immediately upgraded just because the code has changed. Yet, grandfathering has limits, and those limits are becoming increasingly consequential.
If you are selling your home, the buyer’s lender or insurer may require removal as a condition of the transaction. If you are renovating by opening walls, adding circuits, or upgrading your panel, the work that is exposed typically has to meet current code. And if your insurer has flagged the system, grandfathering offers you no protection there. Insurance companies are not bound by building codes. They set their own underwriting standards, and those standards have hardened.
There is also a specific Rhode Island wrinkle worth knowing about. Many homeowners in Providence, Pawtucket, Woonsocket, and East Providence have looked into Mass Save, the New England energy efficiency program that subsidizes insulation and weatherization upgrades. What they often discover is that their Mass Save project cannot proceed if knob and tube wiring is present in the walls. Insulation around active knob and tube wiring is a documented fire hazard, and the program will not allow it. As a result, homeowners trying to lower their heating bills find themselves blocked until the wiring is addressed first.
The short version is that you may not be legally required to remove your knob and tube wiring today. However, between insurance pressure, real estate realities, and programs like Mass Save, the practical cost of leaving it in place keeps rising.
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This is where a lot of Rhode Island homeowners get stuck. They know they need to deal with the wiring, but what stops them is the image of their walls being cut open. In a state where horsehair plaster is common in pre-war homes, that fear is completely reasonable. Horsehair plaster is nearly impossible to match. Once damaged, you are not simply patching it, but rather living with the evidence of the repair or paying significantly to address it properly.
The process does not have to look like demolition. Done right, knob and tube wiring removal is methodical, investigative, and far less destructive than most homeowners expect.
We use specialized camera technology inserted through existing outlets to locate and trace knob and tube wiring from inside the walls. This approach lets us see exactly where the wiring runs, which circuits are still active, and how to remove them without cutting into plaster unnecessarily.
For homeowners in Providence’s historic neighborhoods, East Bay colonials, older mill-era triple-deckers in Pawtucket and Central Falls, or island homes in New Shoreham, this matters enormously. These are not generic suburban houses where drywall damage is a minor inconvenience. They are homes with original character that took generations to build and cannot be replicated. Preserving that character while completing the electrical work correctly is the whole point.
The process starts with a thorough investigation. Before anything is touched, we identify which portions of the system are still active and which have already been decommissioned. That assessment shapes the entire scope of the project. A full-home rewiring typically takes one to three weeks, depending on the size of the home, the accessibility of the wiring, and what we discover along the way. We pull the required permits, since Rhode Island requires them for this work, and the job is inspected and documented when complete.
Our team includes Master Electricians who are also Electrical Inspector Certified. That dual credential means we know exactly what a Rhode Island inspector looks for when coming to sign off on the job. It reduces the risk of a failed inspection alongside the costs and delays associated with rework. When we hand you the Certificate of Insurance at the end, it reflects work done to current Rhode Island Electrical Code standards that successfully passed inspection.
One of the questions we hear most often is if the whole house has to be done at once, or if removal can happen in phases. The answer is that phased removal is possible, but there is an important catch: every completed phase has to meet current code, and your insurance company will typically require that all active knob and tube circuits be addressed rather than just some of them. A partial job may not resolve your insurance situation, which is usually the reason the project is happening in the first place.
Another common question is if you need to leave your home during the work. In most cases, no. A rewiring project is disruptive, featuring periods without power in certain areas, but it does not typically require you to vacate. We will provide a realistic picture of what to expect before work starts.
People also ask if the panel needs to be replaced at the same time. Often, yes. Homes with knob and tube wiring typically feature undersized fuse panels that cannot handle modern electrical loads. Replacing the panel alongside the wiring is usually the more practical approach, and it is often required to bring the system up to current Rhode Island standards. We will tell you what your home requires, rather than pushing what generates the largest invoice.
Then there is the question of cost. We will not list a generic number here that does not apply to your home, because the scope varies considerably based on square footage, the number of active circuits, accessibility, and what we find during the investigation. What we will tell you is that we offer financing through Synchrony Bank for homeowners who need it, and that we provide a firm price before any work begins, avoiding ranges that double by the time the job is done.
We have been performing this work in Rhode Island for over 30 years. We have rewired homes in nearly every corner of the state, spanning from Providence’s oldest neighborhoods to the coastal communities along Narragansett Bay. The wiring configurations we find in Rhode Island’s pre-war housing stock are not surprises to us, but rather familiar territory.
If you have received a notice from your insurer, found out during a home sale, or simply suspect your pre-war Rhode Island home still contains original wiring, the first step is getting an honest assessment rather than a sales pitch. You need to know what is active, what it will take to address it, and what documentation your insurance company requires when the work is done.
The standards surrounding knob and tube wiring are tightening, and the window for treating this as something you can deal with eventually is shrinking. Yet, the process does not have to be as disruptive or overwhelming as you might expect.
If you are ready to get straight answers about your home’s wiring, we are here to help. Lightning Electric serves homeowners across Rhode Island, and we are happy to start with a conversation.
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