Electrician in Los Feliz

No, but they can govern how it looks. Within a Historic Preservation Overlay Zone the concern is the exterior appearance — visible conduit, fixtures, a relocated meter — rather than what happens inside the walls. It usually means routing decisions get made deliberately rather than by shortest path, and sometimes a different fixture. We would rather establish what applies to your property before designing the work than submit something that comes back.

Not inherently, and plenty of it is still intact a century on. The real problems are what has happened to it since: connections made into it without junction boxes, insulation packed over it in an attic, and the complete absence of a ground, which matters for modern appliances and for insurers. Many carriers will not write a policy on a house with active knob-and-tube. It is worth identifying properly rather than assuming either way.