How much does whole house electrical rewiring cost on average?

Whole-house electrical rewiring cost is not one-size-fits-all; Castle Electric Inc. confirms pricing only after a detailed on-site inspection and then provides a clear scope, timeline, and upfront pricing with no hidden fees. Most variation comes from how extensive the upgrade is and what it takes to bring your system up to modern, grounded wiring throughout the home. Our team regularly completes rewires in the Sherborn area and can plan work to respect historic details and finishes. Financing is available for larger projects.

Key factors that drive price:

• Home size, number of circuits, and layout complexity
• Existing wiring type and condition (knob-and-tube, cloth, BX)
• Needed upgrades (panel capacity, dedicated circuits, surge protection)
• Access and restoration needs after wiring, including patching

Schedule an in-home evaluation to receive an accurate written quote you can rely on. <br/> Updated: 2026-05-23 <br/> Need help in Sherborn, MA? Call (781) 762-9891 or book online. "The wiring inspector commented on what a great job they did." — Evie S.