How much does whole house rewiring cost per square foot?

Whole-house rewiring cost per square foot is not a reliable metric and is confirmed only after an on-site assessment; Castle Electric Inc. does not publish a per‑square‑foot price. The biggest cost swing comes from labor complexity and access, especially in older homes where legacy wiring must be carefully removed. Costs also vary with how your circuits are laid out, what must be brought to current code, and how much restoration is needed. Our team regularly rewires older housing stock in the Quincy area, so we price by scope after inspection rather than by square foot. In practice, square‑foot rules break down once we open walls and map legacy circuits. You’ll receive a written scope, timeline, and upfront price before work begins.

Key factors that set final cost:

• Access to wiring (open basements/attics vs plaster or concrete walls)
• Extent of obsolete wiring to remove (knob‑and‑tube, BX)
• Panel capacity upgrades and new dedicated circuits
• Patching, permits, and inspection requirements

Schedule an in‑home evaluation to get a precise, line‑item quote for your home.

Updated: 2026-07-17

Need help in Quincy, MA? Call (781) 762-9891 or book online. "The wiring work was clean and they left our house in fantastic condition after it was done." — Jonathan V.