| Bolana Capitol Enterprises Inc. | 8 | $13,156,963 | 1 | |
| Maintenance Eureka LTEE | 18 | $13,040,336 | 2 | |
| Bee Clean | 59 | $12,877,420 | 4 | |
| Scollard Maintenance Ltd. | 26 | $12,600,626 | 2 | |
| Wabush Janitorial Services Ltd. | 8 | $12,285,370 | 1 | |
| Sunlite Floor Cleaners And Koprash Facilities Services | 14 | $12,240,957 | 1 | |
| Bee-clean | 47 | $10,912,551 | 7 | ✓ |
| D & J's Cleaning Services LTD | 15 | $10,591,199 | 1 | |
| BGIS Global Solutions LTD | 3 | $9,991,459 | 1 | ✓ |
| Impact Cleaning Services LTD | 6 | $9,893,980 | 3 | ✓ |
| Honeywell Limitee (sainte-foy) | 2 | $9,872,755 | 1 | |
| Commercial Building Services | 7 | $9,870,000 | 1 | |
| Corbel Management Corporation | 5 | $9,584,484 | 1 | |
| 2553164 Ontario Inc | 6 | $8,906,465 | 2 | |
| Capital Janitorial | 11 | $8,345,824 | 1 | |
| AAF LA Providence | 10 | $8,169,320 | 1 | |
| Kleenway Building Maintenance | 4 | $7,911,737 | 3 | ✓ |
| Dexterra Integrated Facilities | 8 | $7,890,007 | 1 | ✓ |
| P & R Enterprises, Inc | 13 | $7,878,172 | 1 | |
| Aramark Canada Ltd. | 17 | $7,845,625 | 2 | ✓ |
| GALI Service Industries, Inc. | 6 | $7,788,932 | 1 | |
| ISS Facility Services Limited, | 24 | $7,704,629 | 1 | |
| La Veneta Servizi | 11 | $7,679,427 | 1 | |
| Burns Landscape Maintenance INC | 13 | $7,596,213 | 1 | |
| Skyblue Services CORP | 43 | $7,507,656 | 3 | ✓ |
| Electro Saudi Services Ltd. | 30 | $7,439,185 | 1 | |
| Commercial Building Cleaners - 3388646 Canada Inc. | 3 | $7,311,486 | 1 | |
| Shamrock Building Services Ltd | 71 | $7,121,650 | 1 | |
| SMS Modern Cleaning Services Inc | 36 | $7,091,282 | 1 | |
| ATCO Structure & Logistics Services Ltd. | 2 | $6,993,878 | 1 | |
| Black & Mcdonald Limited (scarborough) | 2 | $6,957,997 | 1 | |
| SQM Janitorial Services Inc. | 21 | $6,955,350 | 11 | ✓ |
| Clean Works INC | 3 | $6,406,828 | 1 | |
| Squeaky Clean LTD | 30 | $6,399,512 | 2 | |
| Herb's Industrial | 8 | $6,334,783 | 1 | |
| Sprucegrove Building Cleaners | 33 | $6,266,436 | 4 | |
| Silver NANO Magic Clean | 15 | $6,170,814 | 1 | |
| Streak FREE Janitorial (1068722 AB Ltd) | 5 | $5,986,972 | 1 | |
| Allen Maintenance Ltd | 4 | $5,970,235 | 2 | ✓ |
| Cooperative DE Travail Sempi | 7 | $5,934,893 | 1 | |
| SBC Facility Services | 17 | $5,911,939 | 2 | |
| Merit Building Cleaning | 16 | $5,889,220 | 3 | |
| Pacific Building Envelope Maintenance LTD | 3 | $5,618,532 | 1 | |
| ACE Cleaning Company | 9 | $5,594,393 | 1 | |
| Clean Earth Industrial Services | 225 | $5,529,781 | 2 | |
| F.d. Maintenance 2011 Inc. | 9 | $5,220,969 | 2 | |
| Modern Niagara Building Services | 138 | $5,220,763 | 5 | |
| Comercial Building Cleaning, 3388646 Canada Inc. | 2 | $5,219,576 | 1 | |
| ROSE & Brody LTD | 21 | $5,160,295 | 1 | |
| 1427730 Alberta Ltd | 15 | $4,990,003 | 1 | |