Hello and welcome to the forum....

Smoke detectors MUST be on the same circuit as lighting and/or receptacles. The rationale is that if one gets temporary nuisance alarms they may be inclined to flip off the breaker and forget about it.

As far as I know, any permit taken out before Jan 02, does not need to abide to the new rule.

However....

Tony.... is the ESA allowing a 4 month leeway before this rule is enforced??