{
  "property_address": "321 Heritage Lane, Toronto, ON",
  "property": {
    "property_type": "residential",
    "property_value": 1200000.0,
    "rental_income_monthly": 5000.0,
    "distance_to_construction_m": 15.0,
    "number_of_units": 2,
    "business_type": null,
    "annual_revenue": 0.0,
    "background_noise_dba": 50.0
  },
  "construction": {
    "duration_months": 9.0,
    "equipment": [
      {
        "equipment_type": "pile_driver",
        "dba_at_15m": 110.0,
        "hours_per_day": 6.0,
        "days_per_week": 5
      },
      {
        "equipment_type": "vibratory_compactor",
        "dba_at_15m": 92.0,
        "hours_per_day": 4.0,
        "days_per_week": 5
      }
    ],
    "dust_impact_zone": "high",
    "vibration_ppv_mms": 15.0,
    "traffic_reduction_pct": 0.0,
    "construction_hours_per_day": 8,
    "night_work": true
  },
  "visual_impact": {
    "description": "Permanent elevated highway structure blocking south-facing views",
    "value_reduction_pct": 0.08
  }
}