Contractor with or without RBQ license: which to choose for your bathroom renovation in Montreal?
- Samuel Provencher

- Feb 21
- 3 min read
When planning a bathroom renovation in Montreal or on the South Shore , one of the most important decisions is choosing between a contractor licensed by the RBQ (Régie du bâtiment du Québec) and one without. The price of a bathroom renovation can vary considerably depending on this choice, but cost isn't the only factor to consider.
In this article, we explore the pros and cons of hiring a licensed contractor compared to an unlicensed contractor, to help you make an informed decision.

What is an RBQ license and why is it important?
An RBQ license is mandatory for any contractor performing construction or plumbing work in Quebec . It guarantees that the company complies with safety, competence, and quality standards .
A licensed contractor can offer:
Guaranteed insurance against construction defects
Compliance with municipal and provincial standards
Legal recourse in case of dispute
Access to renovation permits and official inspections
This legal framework is particularly crucial for projects involving bathroom plumbing systems , such as the installation of a shower drain , a p-trap , or underfloor heating .
The advantages of a licensed entrepreneur
Trust and professionalism
A licensed contractor (RBQ) has undergone rigorous training. They are familiar with the requirements related to bathroom plumbing , faucet installation , and ceramic tile laying .
Legal certainty
In the event of a defect or dispute, you are protected by law. For example, a construction defect or a water leak due to a faulty sink drain may be covered.
sustainable works
Licensed contractors use quality materials : bathroom vanity , quartz countertop , custom-made washbasin unit , or even walk-in shower .
Permits and inspections
They handle the administrative procedures, including for projects in Montreal or Longueuil requiring plumbing or drainage system modifications.
The disadvantages of being a licensed entrepreneur
Higher rates , related to insurance, training and compliance
Limited availability , especially during periods of high demand
The advantages of being an unlicensed entrepreneur
Lower prices : often 15% to 25% less than an RBQ contractor
Increased flexibility : they can start quickly
Fewer formalities : no permits, no inspections (but beware of the risks)
The disadvantages of being an unlicensed entrepreneur
Lower quality workmanship : risk of errors on critical elements such as plumbing , bath drain , or shower waterproofing
No guarantee or recourse in case of a problem
Non-compliance with standards , which can cause problems when reselling
Lack of construction site insurance exposes you to financial liability
Bathroom renovation costs: licensed vs. unlicensed
Type of entrepreneur | Average price for a standard bathroom | Guarantee | Risks |
RBQ Licensee | $24,000 to $35,000 | Yes | Very low |
Unlicensed | $19,000 to $30,000 | No | High (work not guaranteed) |
Which option is right for your project?
Choose a licensed contractor if:
You want a durable and guaranteed renovation
Your project involves modifications to drainage , electricity , or bathroom ventilation
Are you planning to sell your property?
Consider an unlicensed contractor only if:
Your budget is very limited
The work is minor and does not affect the plumbing or the structure.
Conclusion: Prioritize quality for your bathroom renovation
The price of bathroom renovation is an important criterion, but it should not overshadow safety , the durability of materials and the resale value of your property.
At BonBain Construction , we are RBQ-licensed contractors specializing in bathroom renovations in Montreal and on the South Shore. We master all technical aspects, from sink drains to heated floors , including the installation of modern vanities and compact or luxurious bathrooms .
Contact us today for a free estimate and bring your project to life with confidence.



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