Knob-and-tube wiring replacement cost is determined after an on-site inspection because the scope, access, and required upgrades vary by home. The biggest driver is how much of the house still uses knob-and-tube and whether walls, attics, and basements are accessible for running new cable. Our licensed electricians routinely handle complete or partial rewiring and panel upgrades in the Calverton area, pairing the work with safety inspections to ensure systems meet or exceed current standards. Permits and coordination with the utility may be required, and panel or safety device upgrades are often included. A $29 Whole Home Electrical Safety Inspection is available to evaluate older wiring before you commit.
What most often affects price:
- Size of the home and number of affected circuits
- Ease of access (open framing vs lath-and-plaster or tight crawlspaces)
- Need for panel upgrades or smart panel installation
- Added protections (GFCI/AFCI, grounding, and whole-home surge protection)
Schedule a licensed evaluation before adding new loads to any suspect circuits.
Updated: 2026-10-02
Need help in Calverton, VA? Call (540) 205-3447 or book online. Very pleased with the collective team that help with site assessment, quote and execution of electrical panel upgrade and generator installation. — Joe B.