How much does it cost to rewire an old house completely?

The cost to rewire an old house completely is confirmed only after an on-site inspection and a written scope of work. The biggest swing factor is how much of the existing system is outdated or unsafe, such as knob-and-tube that must be removed. Our process maps your circuits, delivers a customized plan with upfront pricing, replaces old wiring with modern grounded wiring, handles patching, and completes a final inspection with documentation useful for insurance or resale. Financing is available for larger projects. We frequently complete full rewires in the Newton Lower Falls area.

Key cost drivers we check:

• Size and layout of the home and access to walls/attics
• Panel capacity, required circuit count, and any service or panel upgrade
• Restoration needs for plaster or drywall after wire runs
• Add-ons like dedicated circuits, lighting, or surge protection

An in-home evaluation confirms an exact price and the precise rewire scope for your home. <br/> Updated: 2026-05-08 <br/> Need help in Newton Lower Falls, MA? Call (781) 762-9891 or book online. “He took the time to completely rewire the box instead of just replacing one switch.” — Rachel R.