ECN Forum Forums Code Related Discussion NEC & other Code issues Smoke detectors in the bedroom

In a single-family dwelling, I put them...

-in all bedrooms
-in hallways outside of bedrooms (Carbon/ Smoke combos)
-at least one on each floor (including the attic if there's an air handler up there)

In a multi-family dwelling, in all spaces mentioned above and in the common staircase/ hallway areas on each level.