Old Houses - 5 Things Your Homeowner's Insurance May Not Cover - Bob Vila
Old House, New Century
Old houses usually have a patchwork of electrical, plumbing, and HVAC systems. If part of the house becomes damaged, it will have to be rebuilt according to current building codes and standards; you can't just replace the old stuff with more of the same. That’s why your policy should have an “Ordinance and Law” section that covers the extra expense of ensuring that repairs comply with current codes.