Quick verdict
Everything Presence One Kit is one of the strongest options for accurate room occupancy in a local-first Home Assistant setup. It takes more effort than off-the-shelf sensors, but the payoff is fast, private automations with no vendor cloud dependency.
Standout: DIY ESPHome kit that combines mmWave presence, PIR motion, and environmental sensing in one local-first board.
Last checked: 2026-04-05