If your place is in for a full electrical upgrade, you need to plan and budget for a labor-intensive and disruptive process.
Your electrician will temporarily shut off power and your contractor will open up the walls.
These older wiring systems, typically with 60 to 100 amps of service, violate current electrical codes and fall short of the standard minimum of 200 amps generally needed to power a home.
Since wires are attached to studs or beams within the walls, rewiring can be very invasive: your team might completely demolish entire walls to access all the old wires and replace them with a new set.
To finish, your team will then plaster and paint the walls while the electrician connects remaining switches and outlets, closes up the new electrical panel, and installs light fixtures.
Rough-ins might also be charged at a flat rate of $250 – $400 per junction box, outlet, or switch.
Contractors charge labor costs which include running cables to devices and connecting wiring to circuit boxes based on the amount and type of fixtures you want to install.
Experienced contractors who do this routinely can generally tell by looking at the circuits what can and cannot be done (whether you need to add more load on the existing framework or whether you need to upgrade to a larger panel because switches are full).