新地主，买了一个老房子准备出租，需要做一些update： change electric panel, replace knob and tube wiring in the attic, replace frayed wiring above the meter, add grounding ( cold water bond), etc. 现在纠结要不要申请permit。如果申请permit, 花费翻倍，要上万了, 远超我的预算；如果不申请permit, 又怕万一房子发生意外，保险公司会不赔。如果近十年不打算卖房，是不是可以不申请permit，找electrician做一下就行了？恳请老地主们给建议，非常感谢！
2. if you only replace a small portion of wirings in the house, you might not be in trouble without a permit. It all depends how the local inspector handles these things.
3. add grounding typically doesn't need a permit, but you need to know what is the right way to do it. (the size of wire, what metal, how deep, etc.).
Just remember you are liable to anything happened to the house.
新地主，买了一个老房子准备出租，需要做一些update： change electric panel, replace knob and tube wiring in the attic, replace frayed wiring above the meter, add grounding ( cold water bond), etc. 现在纠结要不要申请permit。如果申请permit, 花费翻倍，要上万了, 远超我的预算；如果不申请permit, 又怕万一房子发生意外，保险公司会不赔。如果近十年不打算卖房，是不是可以不申请permit，找electrician做一下就行了？恳请老地主们给建议，非常感谢！
2. if you only replace a small portion of wirings in the house, you might not be in trouble without a permit. It all depends how the local inspector handles these things.
3. add grounding typically doesn't need a permit, but you need to know what is the right way to do it. (the size of wire, what metal, how deep, etc.).
Just remember you are liable to anything happened to the house.