Reading the actual guideline text below — never a general AI guess

Here's what the guidelines say about smoke detectors: We require them in three specific places—inside every bedroom, outside the bedroom areas, and on every level of the home. If any of these three locations is missing a detector, that's a failure and counts as a life-threatening safety deficiency that must be corrected within 24 hours. One detector placed in a hallway near multiple bedrooms can satisfy both the "outside bedrooms" requirement and the "on each level" requirement at the same time. It's important to note that smoke detectors and carbon monoxide detectors are separate devices that cannot substitute for each other, even when sold as combination units—a smoke alarm alone does not meet carbon monoxide requirements, and vice versa.

Straight from HUD/FHA Single Family Handbook 4000.1 and Carbon Monoxide Detector Requirements (IRC R315 model code; NV local adoption) — nothing added.

Las Vegas 2026 Smoke Detector Regulations Updated

Las Vegas fire regulations clarify that existing homes at sale need battery-powered alarms in each required location but are not required to retrofit hardwired systems until a permit is pulled for alterations.

Texas Smoke Detector Requirement for New Construction and Property Transfers

Texas law requires that one- or two-family dwellings with construction commenced after January 1, 2008 must have a working smoke detector, and properties constructed before that date must have one installed before sale or transfer of ownership.