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24 companies listed · 21 in Hamilton · 3 open 24/7 · 14 open weekends · 20 rated 4.5+
Data verified October 18, 2026
Listed for businesses in and around Hamilton, ON, these 24 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.
21 of the 24 companies we list are based in Hamilton; the other 3 serve Hamilton from Ancaster (9 km) and Oakville (26 km). 20 of the companies on this page have a rating, from 4.6 to 5.0 across 566 reviews; 3 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (90%), quality (86%) and responsiveness (74%). The topics that come up most in reviews of the companies on this page are "price" and "communication". 3 are open around the clock; 14 are open on Saturdays and 8 on Sundays. 1 lists staff certifications (EPA). 3 have ten or more years of experience, the longest 14 years. 3 offer emergency call-outs; 8 give free estimates and 1 is family- or locally-owned. We have a website on file for 19 of the companies on this page; 17 publish a contact page and 16 list a public email. 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.
Around-the-clock availability is stated by 3 of the 24 commercial cleaning companies here. In this trade that usually means an emergency call out for a flood, a burst pipe or a biohazard rather than a crew standing by, so ask what the after-hours number actually reaches.
