La Salle d'Eau
“Very beautiful boutique not to be missed, adjacent to Plancher 2000 to continue the design of your kitchen and bathroom with their choice of plumbing and sanitary facilities!!”
Best Bathroom Renovation Contractors in Longueuil, QC
15 companies listed · 5 in Longueuil · 1 open 24/7 · 8 open weekends · 14 rated 4.5+
Data verified October 18, 2026
Prestal Construction Inc.
“A passionate entrepreneur, attentive to needs and with very honest prices, I highly recommend!”
Couvre Planchers Rive-Sud
Les Rénovations Mapa
“A very professional team, who understood our needs, listened, and respected the schedule and budget.”
AAA Renovation
EntrepÔt
“The installers who came were professional clean and very polite and helpful”
Listed for homeowners in and around Longueuil, QC, these 15 companies remodel bathrooms, including basement bathrooms and the venting problems that come with them. Each card repeats what the company says about itself on its own site, and the reviews underneath it were left by customers.
Area overview: Longueuil, QC
5 of the 15 companies we list are based in Longueuil; the other 10 serve Longueuil from towns including Montreal (4 km), Brossard (9 km) and Dorval (15 km). The companies on this page are rated from 3.7 to 5.0 across 1,641 reviews; 10 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), quality (73%) and value (55%). 1 is open around the clock; 8 are open on Saturdays and 4 on Sundays. 4 show a licence on their websites. Domain records put 3 websites of the companies on this page at ten or more years old; the oldest dates from 2004. 1 offers emergency call-outs; 1 offers financing or payment plans and 3 give free estimates. We have a website on file for 13 of the companies on this page; 11 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 crews work on Saturdays?
Saturday or Sunday hours show up on 8 of the 15 listings here. That often means the office answers, not that tile is going down. It matters most in a one-bathroom house, where a Saturday of curing time can pull the whole job forward by days.
Ksi Cuisine Solutions
“A very experienced and professional team, very concerned about doing the best work and the very good quality of the material used, along with the reasonable fair price, all on the one hand, and the good management and design by Mr.”
Granite4less
“He was quick and professional in both the ordering process and the installation.”
Construction Daniel Dargis Inc.
“Thank you sir for your service you reassured me and thanks to you I saved thousands of dollars.”
Comptoirs Cuisine Granit
“The counter is very well installed.”
Galleria Design
“Super friendly staff and great service!”
Ébénisterie Gmrs
“Excellent quality and on-time delivery, not to mention the outstanding service.”
Onivo
“The designs and material choices were great, and when we weren't sold on a ceramic model or a tub model, it wasn't difficult for Lizon to find an alternative to our liking (she has a good eye and a lot of design talent, that's for sure!”
Rénovation Stelcore
“I recommend them 100%… A dedicated team that listens to its customers!”
DCR Construction
“Renovated my office from A To Z.”
Why these companies made our list
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