Sierra Alpha Facility Services
“I've been a client for a few years now and I have no complaints!”
Best Commercial & Office Cleaning in Oakville, ON
20 companies listed · all 20 in Oakville · 3 open 24/7 · 10 open weekends · 18 rated 4.5+
Data verified October 18, 2026
Paradisal Bliss
“From booking my times to the day of cleaning it is super easy and accommodating.”
Gpower Cleaning Services
“Consistently good cleans, friendly, professional with clients and accommodating to last minute requests”
Fast Hood Cleaners Inc.
“Service was very nice from fast hood cleaners, Jay was extremely good with his job very professional and did fantastic”
Maid
“They cleaned my mom's condo in order to sell it and it was an impeccable job and quickly done too.”
C&R Janitorial Services Corp
“We have been so happy with the level of cleaning from C&R Janitorial for our offices.”
Listed for businesses in and around Oakville, ON, these 20 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: Oakville, ON
All 20 companies we list here are in Oakville itself. The companies on this page are rated from 3.8 to 5.0 across 420 reviews; 3 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (88%) and responsiveness (77%). The topics that come up most in reviews of the companies on this page are "communication", "efficient" and "price". 3 are open around the clock; 10 are open on Saturdays and 8 on Sundays. The services the companies on this page list most often on their websites are commercial cleaning (3), disinfection services (2) and office cleaning (2). 1 shows a licence on its website and 1 lists staff certifications (EPA). 3 have ten or more years of experience, the longest 20 years. 3 offer emergency call-outs; 7 give free estimates; 4 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 18 of the companies on this page; 14 publish a contact page; 17 list a public email and 1 takes bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any of these companies clean around the clock?
Around-the-clock availability is stated by 3 of the 20 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.
Andelle Maintenance
“I have used them at least three times in the last few years and have not been disappointed.”
BGD Solutions
“Alex and the team are incredible to work with!”
Care Commercial Cleaning Services
“17,000 square feet of construction mess was made spotless in no time.”
A to Z Cleaning Services
“Rocky helped us with sofa cleaning today and it was done very well.”
Eco Living Cleaning Service
“They are always on time, very professional and they do a great job cleaning.”
Nova Building Maintenance
“The quality of their cleaning service is leaps and bounds better than any other providers we've used over the years.”
Ms. Clean Canada
“Clean has proven to be an indispensable partner in maintaining the cleanliness and professionalism of our business space.”
Smart Clean Ltd
“Thank you you do great job!!!”
Superior Sany Solutions Ltd.
“Very polite people to deal with very efficient and fast service”
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Citywide Dryer Vent Cleaning Oakville
“Excellent service and work to ensure safe and clean/dry clothes.”
Gta365 Janitorial Services Inc.
“The team generously went out of their way to make sure the service provided was above and beyond!”
Latino Cleaning & Detailing Services
“They are very detailed when they clean they are reasonably priced and are very welcoming I would recommend them to anyone my house was a disaster before they came after they left it looked like a shoe room I would hire them back in a heart beat”
Sunset Carpet Cleaning Services
“Very pleased with the job done, and I would absolutely recommend Jason to anyone.”
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Blooming Solutions Inc.
“Great services used them in home and office”
Why these companies made our list
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