Ultimate Bathrooms
“We just had our bathroom updated by ultimate bathrooms and are exteemly happy with the results.”
Best Bathroom Renovation Contractors in St. Catharines, ON
15 companies listed · 14 in St. Catharines · 4 open weekends · 11 rated 4.5+
Data verified October 21, 2026
Zeke & Company Countertops
“They were able to get my countertop replaced in a short time frame.”
Go Green Plumbing Ltd
“The guys were very sweet and very knowledgeable.”
Nhance Niagara ꟾ Kitchen Cabinet Refinishing Renovation
“Anyone looking to get your kitchen cabinets refinished and painted, don't think twice, NHance has got unmatched process and finish, and we will be more than happy to give a 5 star reference !!”
AA Design Group
“Vlad did an outstanding job totally redoing that 2 bathrooms by including replacing the tub.”
Craftwood General Contracting
“Steve was very responsive, he got the quote to me quicker than he said he would, started within a few days, showed up when he said he was going to and got the job done in the time he stated.”
Listed for homeowners in and around St. Catharines, ON, 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: St. Catharines, ON
14 of the 15 companies we list are based in St. Catharines; the other one does not publish an address. The companies on this page are rated from 3.3 to 5.0 across 1,248 reviews; 4 have 50 or more reviews and 11 are rated 4.5 or higher. The topics that come up most in reviews of the companies on this page are "cleanliness" and "estimates". 4 are open on Saturdays and 1 on Sundays. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2009. 1 gives free estimates; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 13 of the companies on this page; 12 publish a contact page; 10 list a public email and 1 takes 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 4 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.
The Innovative Group
“If you're looking for a reliable contractor to assist you with your project, I would highly recommend you give them a call.”
Carv Cabinetry
“Mike is super easy to work with, the job was done to better than my expectations”
Allegro Kitchens & Interiors
“I can't thank them enough great quality product with incredible workmanship installing my kitchen as well as great value with competitive prices ..”
The House
“All done on time and on budget.”
Timco Group Inc.
“Tim and staff member framed the interior walls and closets in my basement.”
Today's Designer Kitchens
“Had a smaller sized kitchen redone with cabinets and counters.”
Tommy Tile
“Tommy asked all the right questions to be sure we would get the results we would be happy with.”
Orchard Park Kitchens & Millwork
Queen Street Carpentry and Contracting
“Jake Elstone came to our house and provided a very comprehensive estimate of the work required to upgrade our bathroom.”
Why these companies made our list
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