Knob and tube wiring?

[Jason Carter]

Found a duplex in Grand Rapids I like but it has knob and tube. It's functioning but how concerned should I be? I've seen people say walk away whenever you encounter it and others who say it's not that big of a deal. I'm assuming it's not uncommon in Grand Rapids given the ages of a lot of the homes?

[Tim VandenToorn]

Jason, obviously I will let you do your due diligence on this issue however I am going to challenge Clay on his quote "If it will be a rental, it won't pass inspection."   If you visit this page http://grcity.us/community-development/Code-Compli...  you can look up and confirm that this house has been inspected and certified by the City of Grand Rapids as a rental.  

I own several houses with knob and tube and although they are not as desirable as updated electrical never will an inspector require you to update and entire house if the knob and tube insulation or insulators are not compromised.  

With any of my homes that have knob and tube I update the panel from fuses to breakers to ensure that the breaker will trip if overloaded.  This upgrade in Grand Rapids typically cost 1500.00 per panel.  In a duplex we are often able to get the both panels replaces for around 2000.00 which includes permits. 

Please keep in mind that these are opinions.