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Hardwired smoke alarms have been required on new construction in the US since the 1989 NEC. It usually takes a few years for cities and states to adopt the new
by tanzam75 13y ago
Hardwired smoke alarms have been required on new construction in the US since the 1989 NEC. It usually takes a few years for cities and states to adopt the newest NEC revision. However, by now, all states have adopted at least 1989.
Hardwired alarms are also required for major renovations. However, you basically have to take it down to the studs before this requirement is triggered.
- brudgers 13y agoThe requirement for renovations will vary based on locally adopted codes and their interpretation by building officials. In more affluent areas, the tendency will be to require upgrades along with relatively minor work. In less affluent or rural areas, the tendency will be more libertarian - i.e. building codes and their enforcement are subject to the political process.