STL Nettoyage
“Thank you very much to Steven for his excellent service, I recommend his very courteous, kind services and gives excellent advice at a good price.”
Best Commercial & Office Cleaning in Longueuil, QC
15 companies listed · 7 in Longueuil · 3 open 24/7 · 10 open weekends · 14 rated 4.5+
Data verified October 21, 2026
La Salle d'Eau
“Very nice shop, with quality products and above all excellent service/advice!”
Amelys
Allo Ménage Plus
“La réceptionniste est très compréhensive et gentille aussi.”
Nouvelle ÈRE
“Que ce soit pour le lavage des fenêtres, des soffites ou des gouttières, tout était parfait !”
Simas Inc.
“Small family business - honest, friendly people who do impeccable work”
Listed for businesses in and around Longueuil, QC, 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: Longueuil, QC
7 of the 15 companies we list are based in Longueuil; the other 8 serve Longueuil from towns including Montreal (4 km), Saint-Léonard (9 km) and Outremont (8 km). The companies on this page are rated from 3.9 to 5.0 across 1,725 reviews; 8 have 50 or more reviews and 14 are rated 4.5 or higher. 3 are open around the clock; 10 are open on Saturdays and 9 on Sundays. 1 shows a licence on its website. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2012. 3 offer emergency call-outs; 3 give free estimates and 2 list coupons or special offers. We have a website on file for 13 of the companies on this page; 10 publish a contact page; 10 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.
Do any of these companies clean around the clock?
Around-the-clock availability is stated by 3 of the 15 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.
Alphanet Services d'Entretien
Spaceclean
“Thank you guys, amazing experience, I haven't seen such quality work in a long time.”
Nettoyage Pro Cleaning
“We used this company for spring cleaning our condo and Angel and Fernanda did such an amazing job.”
The Clean Panther Nettoyages
“Salim, the President, takes the matter into his own hands and delivers exactly what was promised.”
Ménage Oxygen
“The Oxygen cleaning team has been coming to my home for almost 4 months and I am very satisfied with the service.”
Nicoval Services
“Thank you so much for the service and swift delivery, I will gladly recommend this company to anyone requiring cleaning solutions.”
Traitements Proclean
“Alex is very kind and professional.”
Midóri Home
“They communicated well throughout the entire process: set clear expectations, explained changes, and followed up.”
Le Maître Nettoyeur De Verticaux Inc
“I don't know their recipe but they worked a miracle with my vertical blinds.”
Why these companies made our list
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