Start every janitorial bid from production rate, not price
Production rate (square feet cleaned per labor hour) is the variable that drives every other number on the page. For general office, expect 3,000–4,000 sq ft/hour. Medical clinics: 1,500–2,000. Industrial/warehouse: 8,000–15,000. Post-construction: 200–500. Walk the building, measure (or estimate from floor plans), then pick a defensible production rate by facility type. Multiply out: visits per week × hours per visit × weeks per month = monthly labor hours.