Knob-and-tube or aluminum branch wiring — 4% Frequency (2026)

Knob-and-tube or aluminum branch wiring appears in 4% of 2026 home inspection reports at severity 78/100. Typical remediation $4,500–$18,000 to remediate. HomeS

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HomeScore helps homeowners organize maintenance, repairs and home records. It tracks repairs, replacement timing and ownership costs across 40+ home systems.