Decoding Knob and Tube Wiring: How It Impacts Your Home's Value

If you own or are looking to purchase an older home, there might be lurking in your home something that could affect its value – knob and tube wiring. Due to the age of many homes in Westmoreland County, I still see plenty of homes with some functioning knob and tube wiring. This old-school electrical setup was once a popular way to install electricity in a home. But now, it's like the outdated ancestor of today's electrical systems, and it comes with some problems.

What Is Knob and Tube Wiring?

Back in the late 1800s to the early 1900s, knob and tube wiring was the go-to for electrifying homes. It used ceramic knobs and tubes to keep wires in place. Fast forward to today, and it's not holding up so well.

Example of Knob and Tube Wiring

The Hidden Dangers

The materials used in knob and tube wiring, like rubber or cloth insulation, have probably seen better days. That means a higher risk of fires. Plus, there's no grounding conductor, which makes the chance of getting a shock higher and incompatible with three prong plugs. Insurance companies see these homes as risky, making it harder and more expensive to get coverage.

How It Affects Your Home's Value

Now, let's get to the point – how does knob and tube wiring impact your home's value?

Safety Worries

People worry about safety when they hear about knob and tube wiring. The fear of fires or electrical problems can make buyers think twice, lowering your home's value due to the smaller buyer pool. This can also have a negative impact on the insurability of the home due to the safety concerns. Many insurance companies will not cover a home with known functioning knob and tube wiring due to the known safety concerns.

Cost To Upgrade

Upgrading from knob and tube to a modern electrical system is a big job and can be costly. Buyers might consider this cost when deciding on a home, potentially lowering its value.

Appraisers Take Notice

When appraisers are on site to look at the property, they're likely to consider the knob and tube wiring in the overall quality and condition rating of the home. Homes that are not updated from systems installed almost 100 years ago have a lower quality and condition rating which, when compared to a home that is updated with newer systems, have a lower value.

If there are safety concerns when it is inaccurately spliced into a more traditional wiring system (I’ve seen this many times), frayed insulation on the wires, or being wired to newer 3 prong outlets, an appraiser might call these out to be repaired as a part of the loan process.

What Can You Do?

If you find yourself dealing with knob and tube wiring, it's not the end of the world. Get a qualified professional to check it out and fix any problems. Upgrading your electrical system can make your home safer and more attractive to buyers.

Will A House With K&T Wiring Qualify For A Mortgage?

The underwriting guidelines for all the major mortgage agencies (Fannie Mae, Freddie Mac, FHA, VA, and USDA) all allow for knob-and-tube wiring as long as the system is deemed to be safe, functional, and typical for the area. Just understand that while many loans will allow for this type of wiring, the house still might not qualify to be insured or there might be safety concerns that need to be repaired in order to qualify.

 In the world of home values, knob and tube wiring is like an old family secret – it can affect things more than you realize. Knowing the risks and doing something about them can make your home safer and keep its value strong. So, whether you're a homeowner or looking to buy, understanding this hidden issue is key to making smart decisions about your home.

Is A Convicted Felon Inspecting Your Home?

In recent years, Fannie Mae has been working towards what they call Valuation Modernization. This process involves allowing for the gradual progression of a bifurcated valuation product to make the home valuation process more efficient and accurate. However, what Fannie Mae did not explicitly state is that they were also trying to combat the growing shortage of appraisers in the industry. The increased qualifications to become an appraiser, along with the the numbers of appraisers leaving the profession, contributed to this shortage.

The newest product Fannie Mae just rolled out is called valuation acceptance + property data. This is when someone, most likely not an appraiser, inspects the property for the lender and provides them with the property data. The lender uses this property data in conjunction with valuation models to determine if a traditional appraisal is needed. However, this is unsettling on many levels. For example, did you know that these property inspectors have no oversight or regulations as of right now? It is up to the lender to demonstrate the credibility of these property data collectors.

In contrast, licensed appraisers and their trainees who are bound by ethics, vetted and background checked by their respective states should be used for all property data collections going forward. But that most likely isn't going to happen because then lenders will have to address the entire reason why we don't provide this service - the fee. The dirty little secret in all of this is that lenders use these data collectors because it is cheap.

Here is an example of what can go wrong when using a property data collector that was not vetted. In one such case, a major Appraisal Management Company hired an individual who stated on his LinkedIn page that he was a "videographer." This same individual was convicted along with two other individuals for staging an armed robbery. It is reported that it was during this conviction that he was hired as a data collector. Is this the type of person you want in your house?

https://appraisersblogs.com/amc-hires-a-convicted-felon-as-property-data-collector

https://www.justice.gov/usao-wdmi/pr/2022_1102_Uchendu-et-al

Cases like this one (and possibly others) raise the concern that criminals, convicted or otherwise, will use property data collections as an opportunity to "case" homes for criminal activity. This creates liability for lenders, the GSEs/taxpayers, homebuyers, and others who rely on these products.

In conclusion, while Fannie Mae's Valuation Modernization process aims to make the home valuation process more efficient and accurate, the use of unlicensed property data collectors raises concerns about the security and safety of homeowners. It is essential that lenders and regulators ensure that these collectors are vetted and regulated, to avoid the possibility of criminals infiltrating the industry. Using licensed appraisers and their trainees, who are bound by ethics and vetted by their respective states, should be the preferred option for property data collections going forward.

Where do you want 3rd degree burns?

Water heaters come from the factory set to 140 degrees, which is hot enough to produce 1st degree burns after 3 seconds of exposure. However, pressure relief valves aren’t set to trigger until 150psi, or when the water temperature reaches 210 degrees. That’s hot enough to instantly produce 3rd degree burns. Prior to tanks being designed with a pressure relief valve, when the water pressure would get too high, the tank would explode.

Many hot water tanks are installed in areas like laundry rooms where the chances of the pressure relief valve releasing this damaging steam is likely to happen when someone is nearby. In some models, the pressure relief valve is located on top of the tank… at face level. Many others are located on the side… at chest or hip level. Some models are at ankle height, but all of them allow for a pipe to be installed to direct the water/steam directly and harmlessly at the floor.

“The discharge piping serving a pressure relief valve, temperature relief valve or combination thereof shall Not terminate more than 6 inches above the floor or waste receptor. (504.6 Requirements for discharge piping)”

— International Association of Certified Home Inspectors

For some reason, water heaters do not ship with an extension pipe for the pressure relief valve to direct this boiling steam away from homeowners. PLEASE, spend the $15 it takes to install an extension pipe on your pressure relief valve to protect yourself and family. It might even help prevent repair issues the next time your property needs appraised.