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“We absolutely love how the shower looks now and all the problems were fixed.”
Best Bathroom Renovation Contractors in Thornhill, ON
24 companies listed ยท 9 in Thornhill ยท 2 open 24/7 ยท 18 open weekends ยท 23 rated 4.5+
Data verified October 18, 2026
Joseph Kitchen and Bath
“Need you guys do visit the place if you looking for something best in the market !”
ECC Group Design
“Reliable, economical, quality craftmanship & excellent result are how I describe this company.”
TJI Renovation
“Hired them for washroom renovation and they did a great job in all installations (shower kit/flooring/painting,etc).”
Arthaus Millwork INC
“Every time I was satisfied with end product and my clients were Also happy with how their space looked after installation.”
R&M Group Inc
“Additionally, he is an extremely tidy worker and always ensures to clean his work area thoroughly before leaving every evening.”
Listed for homeowners in and around Thornhill, ON, these 24 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: Thornhill, ON
9 of the 24 companies we list are based in Thornhill; the other 15 serve Thornhill from towns including Mississauga, Toronto and Woodbridge. The companies on this page are rated from 4.0 to 5.0 across 1,336 reviews; 15 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise quality (88%), professionalism (86%) and responsiveness (72%). The topics that come up most in reviews of the companies on this page are "price", "cleanliness" and "efficient". 2 are open around the clock; 18 are open on Saturdays and 6 on Sundays. The services the companies on this page list most often on their websites are kitchen renovation (4), basement renovations (3), bathroom renovations (3), kitchen (3) and bathrooms (2). 5 show a licence on their websites. 7 have ten or more years of experience, the longest 17 years. 2 offer emergency call-outs; 4 offer financing or payment plans; 14 give free estimates; 1 is family- or locally-owned and 3 list coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
How much can I tell from these companies' websites?
A website is linked from 23 of the 24 listings here. Look past the finished photos for pictures taken mid-job: membrane on the walls, blocking between studs, an insulated duct heading outdoors. A company that photographs the parts nobody sees is telling you what it cares about.
Hrc Group
“Based on the work that was completed and the knowledge base that shaw has, we are already planning to work on another project with him.”
Al-D Home Improvement Solutions
“I highly recommend him and his services, especially for kitchen and bathroom designs and work.”
NUI Remodeling & Construction Thornhill
“They were very knowledgeable, puntual and meticulous, paid attention to the smallest details, and very experienced.”
Cozy Casa Homes
“Worked with Billy on a few projects and he is probably one of the most professional GC I know.”
A & R Renovations Inc.
“When deciding to go ahead to tackle the renovation of our basement, we did not hesitate to turn to Alex with A and R Renovations.”
HH Renovation & General Contracting Inc
“They got the job done better than I could have ever imagined and within a great timeline!”
Harmony Basements
“Roy ensured the work progressed as scheduled (the only delay was getting the permit itself- nothing to do with the company) and was there to check on the quality and progress.”
Kitchen Land
“From the skilled craftsmen who executed the work to the project managers who ensured everything stayed on track, Kitchen Land's team demonstrated unparalleled expertise and dedication.”
CD Home Renovations Group
“He was always on time, professional and work hard to get the job done in a timely manner.”
Interior Nation
“During the installation, Supervisor DJ was there everyday, making sure work was executed according to plan and that problems were addressed.”
MD Kitchen & Bath
“We requested an extremely tight turnaround and MD Renovations managed to complete the project in advance of the deadline, all while still maintaining exemplary customer service and quality of product.”
General Flooring Canada
“Has a great team they proficiently And their Production is top-notch.”
Summit Contractors
“Arash was prompt in returning my call and providing a reasonable quote for the job.”
Trugem Kitchens
“I can't thank enough to TruGem, they renovated whole office in the given timeline with the minimum downtime.”
Altima Kitchens and Closets
“We were very impressed with the quality of work and even more impressed when Abhay checked in a few days after we had settled in to make sure everything was working as intended.”
Astaneh Construction
“I'm so happy for finding this company, they are professional and detail-oriented.”
Sweet Refinishing & Painting
“The attention to detail and time taken to ensure the highest quality end product was impressive.”
CGD
“The installation crew was very professional, prompt and did a very neat job .”
Why these companies made our list
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