https://community.home-assistant.io/t/occupancy-blueprint/477772

occupancy.yaml

blueprint:
  name: Occupancy
  description: |
    This blueprint implements the 'Wasp in a Box' principle, a method for detecting room occupancy based on motion and door sensors. It was inspired by an AppDaemon app with a similar approach.
    You can find more information about this blueprint on the Home Assistant Community: https://community.home-assistant.io/t/occupancy-blueprint/477772
  domain: automation
  source_url: https://gist.github.com/AlexanderBabel/487f054b289b61f90afdc837d23cb85e
  input:
    door_sensor:
      name: Single Door Sensor or Door Sensor Group
      selector:
        entity:
          filter:
            - domain: binary_sensor
            - domain: input_boolean
    motion_sensor:
      name: Single Motion Sensor or Motion Sensor Group
      selector:
        entity:
          filter:
            - domain: binary_sensor
            - domain: input_boolean
    motion_sensor_turn_off_delay:
      name: Motion Sensor turn off delay
      description: "Time after the motion sensor no longer detects motion to set the occupancy to clear. (Default = 5s)"
      default: 5
      selector:
        number:
          mode: box
          min: 0
          max: 3600
          unit_of_measurement: seconds
          step: 1.0
    door_sensor_turn_off_delay:
      name: Door Sensor turn off delay
      description: "In order to automatically set the occupancy to clear when the door was opened and left open. This only clears the occupancy when there was no motion detected between opening the door and the period of this turn off delay period. (Default = 15s)"
      default: 15
      selector:
        number:
          mode: box
          min: 0
          max: 3600
          unit_of_measurement: seconds
          step: 1.0
    motion_sensor_delay:
      name: Motion Sensor Delay
      description: |
        The time the motion sensor takes before clearing its detected state. (Default=-1 [Disabled])
        It is recommended to add a small buffer to prevent false positives. For example, if your motion sensor has a 10-second delay, set this to 12s.
      default: -1
      selector:
        number:
          mode: box
          min: -1
          max: 3600
          unit_of_measurement: seconds
          step: 1.0
    occupancy_helper:
      name: Occupancy Helper (Type input_boolean)
      description: This helper tracks occupancy status and can be used as a trigger for automations, such as turning lights on or off.
      selector:
        entity:
          domain: input_boolean
          multiple: false
    last_motion_helper:
      name: Last Motion Helper (Type date and time)
      description: This helper logs the last motion detection time to ensure occupancy clears correctly when the door is closed.
      selector:
        entity:
          domain: input_datetime
          multiple: false
variables:
  door_sensor: !input door_sensor
  motion_sensor: !input motion_sensor
  last_motion_helper: !input last_motion_helper
  motion_sensor_delay: !input motion_sensor_delay
trigger:
  - platform: state
    entity_id: !input motion_sensor
    from: "off"
    to: "on"
    id: motion
  - platform: state
    entity_id: !input door_sensor
    id: door_opened
    from: "off"
    to: "on"
  - platform: state
    entity_id: !input door_sensor
    id: door_closed
    from: "on"
    to: "off"
  - platform: state
    entity_id: !input motion_sensor
    from: "on"
    to: "off"
    for: !input motion_sensor_turn_off_delay
    id: clear
  - platform: state
    entity_id: !input door_sensor
    to: "on"
    for: !input door_sensor_turn_off_delay
    id: door_left_open
condition: []
action:
- choose:
  - conditions:
    - condition: trigger
      id: motion
    sequence:
    - service: input_datetime.set_datetime
      data:
        timestamp: "{{ as_timestamp(now()) }}"
      target:
        entity_id: !input last_motion_helper
    - if:
      - condition: state
        entity_id: !input occupancy_helper
        state: "off"
      then:
      - service: input_boolean.turn_on
        data: {}
        target:
          entity_id: !input occupancy_helper
  - conditions:
    - condition: trigger
      id: door_opened
    sequence:
    - if:
      - condition: state
        entity_id: !input occupancy_helper
        state: "off"
      then:
      - service: input_boolean.turn_on
        data: {}
        target:
          entity_id: !input occupancy_helper
  - conditions:
    - condition: state
      entity_id: !input occupancy_helper
      state: "on"
    - condition: or
      conditions:
      - condition: and
        conditions:
        - condition: trigger
          id: clear
        - condition: or
          conditions:
          - condition: state
            entity_id: !input door_sensor
            state: "on"
          - condition: state
            entity_id: !input door_sensor
            state: "unavailable"
          - condition: state
            entity_id: !input door_sensor
            state: "unknown"
          - condition: template
            value_template: >-
              {{ 
                is_state(door_sensor, 'off') 
                and (
                  states[door_sensor].last_changed > as_local(as_datetime(states(last_motion_helper)))
                  and (
                    motion_sensor_delay == -1 
                    or (
                      motion_sensor_delay > -1 
                      and states[door_sensor].last_changed >= states[motion_sensor].last_changed - timedelta(seconds=motion_sensor_delay)
                    )
                  )
                )
              }}
            alias: True, when the door is closed and last motion was detected before door was closed and no motion was detected in the timeout period
          alias: Check if door is open or closed and no motion was detected afterwards
      - condition: and
        conditions:
        - condition: trigger
          id: door_closed
        - condition: state
          entity_id: !input motion_sensor
          state: "off"
        - condition: template
          value_template: >-
            {{ 
              states[door_sensor].last_changed > as_local(as_datetime(states(last_motion_helper)))
            }}
      - condition: and
        conditions:
        - condition: trigger
          id: door_left_open
        - condition: state
          entity_id: !input motion_sensor
          state: "off"
        - condition: template
          value_template: >-
            {{ 
              states[door_sensor].last_changed > as_local(as_datetime(states(last_motion_helper)))
            }}
          alias: True, when the door was opened and no motion was detected since opening the door for the turn off delay
        alias: If the door was left open and no motion was detected between when the door was openened and the turn off delay
    sequence:
    - service: input_boolean.turn_off
      data: {}
      target:
        entity_id: !input occupancy_helper
  default: []
mode: queued
max: 10

Hey @FrankTub,

Thank you for your patience. I will check out your blueprint and report back about the change. I recently moved and had to re-setup numerous automations.

Hi @FrankTub again,

I tested the script for a month and everything looks good to me. Thank you for the improvement! I adjusted the original script to your version.