Roseville Knowledge · Era-SpecificWhat Year Homes in Roseville Have Aluminum Wiring?
Solid-aluminum branch wiring was installed in Roseville-area homes built between 1965 and 1976. Here's why, what insurance carriers want to see, and what COPALUM repair actually costs.
By Home Inspectors Roseville MN · Last reviewed May 2026
The 1965–1976 window — what was happening
Copper prices spiked. Aluminum was approved as residential branch wiring. The window closed when fire data came in.
How to tell if a Roseville home has it
Pull a receptacle cover. Look for the AL marking on conductors and the CO-ALR marking on switches and outlets.
What insurance carriers require
Most carriers require COPALUM crimp repair OR full re-wire before binding a new policy.
What COPALUM costs in Roseville
Typically $4,000–$9,000 depending on the number of terminations.
Full re-wire vs. COPALUM
Re-wire is more disruptive but eliminates the issue. COPALUM is faster and cheaper. See the defect page.
Related defect pages
Get an inspection
Call (651) 666-5602 or request a quote online. Same-week reports. Era-specific findings.
Ready for a Roseville Home Inspection?
Same-week reports. Thermal imaging included. Era-specific findings for 1955–1975 ramblers, lakefront walkouts, and new-construction townhomes.