The Cleaning Ladies
“Stephanie who helped us set up this appointment was such a delight to talk to, she's the reason we went ahead with the booking.”
Best Commercial & Office Cleaning in Oshawa, ON
15 companies listed · 6 in Oshawa · 2 open 24/7 · 9 open weekends · all 15 rated 4.5+
Data verified October 21, 2026
Generations Cleaning
“I would highly recommend Generations Cleaning & Building Services to anyone who is looking for professional cleaning or maintenance services.”
Maid-Mart Home & Office Cleaning
“They have always done an excellent job of cleaning - and they do special jobs like cleaning the refrigerator.”
Task-Co Building Maintenance Inc.
“Arrived promptly, had all the necessary tools for the job and finished it in a very professional manner.”
Fastwel Contractors INC
“I was very pleased with their services and I would highly recommend that you hire this company for any cleaning service !”
Commercial Hood Cleaning
“After a long time, I found a Hood Cleaning Company to whom the price worth I paid.”
Listed for businesses in and around Oshawa, ON, these 15 companies hold commercial cleaning contracts. Ask each one for a site walk before it quotes, since square footage alone says nothing about the entrance matting, the washroom count or the winter mess that drives the real workload.
Area overview: Oshawa, ON
6 of the 15 companies we list are based in Oshawa; the other 9 serve Oshawa from towns including Whitby (8 km), Courtice (7 km) and Brooklin (11 km). The companies on this page are rated from 4.5 to 5.0 across 1,207 reviews; 4 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise quality (93%), professionalism (88%) and punctuality (66%). 2 are open around the clock; 9 are open on Saturdays and 7 on Sundays. 1 lists staff certifications (IICRC). Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2007. 2 offer emergency call-outs; 7 give free estimates; 1 is family- or locally-owned and 2 list coupons or special offers. We have a website on file for all 15 of the companies on this page; 14 publish a contact page; 12 list a public email and 2 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Does a contractor need an address in Oshawa?
An address in Oshawa is given by 6 of the 15 commercial cleaning companies here; the others come from other towns within 15 km. For nightly work, the supervisor's drive matters more than the office address, since a site that is an hour from the nearest manager gets inspected less often.
Hire A Maid House Cleaning Services Inc.
“We are very happy with Bronwyn as she was punctual, efficient and thorough.”
Quality Janitorial Services Inc.
“We have been using QJS cleaning services for almost a year and their service has been amazing!”
Karen's Kleaning
“Her services were so good the landlord hired her company to do the common areas as well.”
The Cleaning Concern
“I appreciated The Cleaning Concern's flexibility to adapt to our office's schedule and valued their care and attention, ensuring every visit was consistently good (if not better!”
Dream Clean Commercial Services
“One of the best services I have had.”
Tri-Care Services
“We are so glad to have brought them to our location and recommend them to everyone in Oshawa.”
Sanisquad
“I had them do a move-in clean of my house and couldn't be happier.”
East Pro Contracting Group
“I had many opportunities to use East Pro contracting for several of my clients and each time Jay White of East Pro managed to go beyond their expectations.”
Canadian Carpet Cleaning and Janitorial Services
“They are so good at what they do, not only on cleaning problem areas but how conscientious they were, explaining what they were doing and how to future take care of carpets.”
Why these companies made our list
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