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Homes less than 10 years old will have a modern type breaker box. As far as cost goes, that is a good thing if an upgrade becomes necessary. In this type of house, the breaker box will be a minimum of 100 amps, and probably have enough available open circuits to allow upgrading without needing an entirely new panel. This type of upgrade can usually be completed between $363 and $1004.
The current minimum requirement for an electric breaker panel is 100 amps. Panels come in 100, 150, 200 and 400 amp capacity. Old panels, especially those with the old glass fuses, are prone to tripping and can pose a fire hazard.lectrical Subpanel Cost. In most cases of upgrading to a 400-amp electric panel (and in some cases a 200-amp panel) you will also need a subpanel or two. These subpanels range in price from $500-$1000.