The home zone (zone.home) is the foundation for:

  • ✅ Presence detection (automations for “arrived/left”)
  • ✅ Sunrise/sunset calculation (lighting, blinds)
  • ✅ Weather forecasting (coordinate-based)
  • ✅ Geofencing for devices and users

Inaccurate coordinates = false triggers, wrong forecasts, broken automations.

🎯 The Default Wizard Problem

During initial setup, Home Assistant asks to pick a location on a map. But:

  • ❌ No manual coordinate input in the wizard
  • ❌ IP-based auto-detection often has 1–10 km error
  • ❌ Elevation above sea level is not requested

Solution: configure precise coordinates after installation, via UI or YAML.

🔧 Method 1: Via UI (After Installation)

Step 1: Get Precise Coordinates

Use a GPS-enabled device (phone with Home Assistant app):

  1. Install the official companion app
  2. Grant precise location permission
  3. Enable device_tracker.<device> sensor in app settings
  4. Open Developer Tools → States in web UI
  5. Find entity device_tracker.<your_device>
  6. Copy attributes: latitude, longitude, altitude

Step 2: Update Home Zone

  1. Settings → Areas, labels & zones → Zones
  2. Open home
  3. Paste coordinates into Latitude / Longitude fields
  4. Save

Step 3: Set Elevation

  1. Settings → System → General
  2. Fill Elevation above sea level (in meters)
  3. Save

💡 Zone radius: default is 100 m. Increase to 200–500 m for rural areas or if GPS has noticeable error.

⚙️ Method 2: Via YAML (Advanced)

Add to configuration.yaml:

homeassistant:
  name: Home
  latitude: 55.7558 # ← example, replace with yours
  longitude: 37.6173 # ← example, replace with yours
  elevation: 156 # elevation in meters
  radius: 200 # zone radius in meters
  unit_system: metric
  time_zone: "Europe/Moscow"
  country: "RU"
  currency: "RUB"

Important:

  • After changing configuration.yaml, run Check Configuration and Restart
  • If coordinates are set in YAML, UI fields become read-only

🔄 Alternative: homeassistant.set_location Action

For dynamic updates (e.g., from automation):

automation:
  - alias: "Update home location"
    trigger:
      platform: time_pattern
      minutes: "/30" # every 30 minutes
    action:
      - action: homeassistant.set_location
        data:
          latitude: "{{ states('sensor.gps_latitude') }}"
          longitude: "{{ states('sensor.gps_longitude') }}"
          elevation: "{{ states('sensor.gps_altitude') }}"

⚠️ Use with caution: frequent location updates may break presence automations.

⚠️ Common Issues

# "Away" doesn't change to "Home" on return
→ Check zone radius: increase to 300–500 m
→ Ensure `device_tracker` is updating (interval, min distance)

# Wrong sunrise/sunset time
→ Verify `elevation` and `time_zone` in settings
→ Reload `sun` integration

# Coordinates won't save in UI
→ They may be set in `configuration.yaml` - edit only there