Montreal ductwork contracts RBQ: rules, Bill 101 and NEQ

What to take away

RBQ licensing for Quebec ductwork contractors

Quebec does not license ductwork contractors through a municipal office. The Régie du bâtiment du Québec (RBQ), the regulator that administers Quebec's Building Act (Loi sur le bâtiment), issues the licence that lets a business take on regulated construction work, ventilation and duct installation included, in Montreal and across the province.

Quebec rules follow the job site. A licence issued in a U.S. state does not transfer to work in Montreal, and RBQ paperwork does not cover a job south of the border. If you bid on both sides, carry both sets of obligations, and read every figure in this article as Canadian dollars.

Without it you cannot sign a covered contract, advertise as a contractor, or collect payment for regulated work. The RBQ also checks liability insurance, and for some subcategories it checks that a qualified representative holds the right certificate. Your licence number must appear on your contracts, quotes, invoices and advertising.

The licence and the certificate are separate things. The licence belongs to the business. The certificate belongs to the person who proves competence in a trade or specialty. A company holds its licence only while that person stays on staff, so losing them can suspend your right to bid.

If you are new to the business side, our guide to hvac contractor licensing requirements explains how provincial regimes fit together before you add Quebec rules on top.

What the licence application involves

Working without a licence carries penalties under the Building Act, and the RBQ can order you to stop. It can also refuse a renewal over unpaid fees or missing training. Diarize renewal dates the way you diarize permit inspections. An expired licence mid-project leaves you unable to invoice.

Bill 101 and French contract requirements

Bill 101, the Charter of the French Language, sets the language rules for your ductwork contracts in Montreal. A standard form contract is a contract of adhesion and must be drawn up in French.

A customer can sign an English version only after seeing the French one, and only with clear agreement from both sides. Even then the French text governs a dispute. A handshake or an English-only quote leaves the contract open to challenge.

Quebec's Consumer Protection Act (Loi sur la protection du consommateur) governs the contract you sign with a homeowner, alongside the Civil Code of Quebec, which is where the contract of adhesion is defined. The Act sets what the writing must contain and gives the consumer cancellation rights, including for contracts signed away from your place of business. Sell door to door and the itinerant merchant rules add a permit from the Office de la protection du consommateur.

You can run a bilingual contract if the French version is available and not inferior. Translation is a real cost, so budget for it when you set rates. For the wider paperwork picture, see our hvac contractor compliance checklist.

Customers, employees or competitors can file a language complaint with the Office québécois de la langue française. An investigation usually opens with a request for your documents. If you cannot produce French versions, the fix is retroactive and expensive.

Small operators translate once and forget. Templates change when prices change, and every new version needs the same treatment. Keep one French source file for contracts, quotes and invoices, and edit only that file so the English copy never drifts ahead of it.

Verifying a contractor through the register and NEQ

Every business operating in Quebec gets a Quebec Enterprise Number (NEQ), a ten-digit identifier that stays with the business through changes of name or address. The Registraire des entreprises, the office inside Revenu Québec that keeps the register, issues it and records every update.

The Registre des entreprises du Québec (REQ) is the public register. Look up a ductwork contractor, a supplier or a general contractor there before you sign a subcontract or extend credit. Start with the enterprise register search to confirm who you are dealing with.

What to confirm before you sign

The register is also where the filings a business must keep current show up. If you are starting out, the province's start-an-enterprise rules set out registration, permits and the order of steps. Our article on hvac contractor license requirements covers the licence side for new owners.

The register also shows whether the annual updating declaration (déclaration de mise à jour annuelle) is filed. A company files it within three months of its fiscal year end, and a company that has not filed can be struck off. A struck-off company cannot legally carry on business in Quebec. Check that before you pay a deposit or release materials to a subcontractor you have never used.

Mismatches are the signal. If the contract names one company, the invoice another and the register a third, stop and ask why. Ductwork disputes in Montreal often trace back to a corporation that was never registered for the work it was billing.

How licensing overhead lands in ductwork pricing

RBQ licensing is not free and not one-time. Licence fees, qualification exams, insurance minimums and continuing training all sit in your overhead. That overhead has to show up in your ductwork pricing.

Montreal adds its own pressures. Older triplex stock often has tight chases and non-standard duct runs, which slows installation. Winter work and freeze-thaw cycles affect scheduling and material handling.

A licensed contractor also carries costs an unlicensed operator avoids: CNESST coverage for workers, liability insurance, and the administrative time to stay compliant. Those costs are legitimate and should be visible in your quotes, not hidden.

Overhead lines to carry into every quote

For a structured approach to margins, see how to price hvac contractor services. A quote that ignores licensing overhead looks cheap and then fails on the job.

Competing on price against unlicensed operators is a losing race. They carry no coverage and they disappear when a customer complains. Sell the licence instead: it is the reason the customer can claim on insurance and the reason the work passes inspection.

Overhead per job falls as volume rises. Two Montreal firms can quote the same ductwork at different prices and both be profitable, because one spreads licence and insurance costs across more contracts.

Working with customers in French

Montreal customers expect to be served in French. Even when they speak English, the contract and the paper trail must meet Bill 101. That changes how you write quotes and how you explain ductwork pricing.

Train office staff to open in French and to hand over the French contract first. If the customer wants English, note the choice in writing and keep both versions on file.

Use plain French for technical terms. Conduits, gaines and ventilation are standard words, but customers may not know them. Explain what the work involves before you present the price.

Your quote template should have a French version ready. Our hvac contractor quote template shows the fields to include, and you can mirror them in French without changing the structure.

Communication rules that hold up

Clear French communication reduces disputes and speeds up approvals, which protects your margin. When a dispute does start, the paper trail decides it. A signed French contract, a dated quote and a written change order settle most arguments before they reach a lawyer. Text messages and verbal approvals do not carry the same weight.

Give the customer one page in French covering scope, schedule and exclusions. Customers who understand the exclusions approve changes faster, and faster approvals keep crews moving through the winter.

Worked example: a duplex in Rosemont

An older forced-air system in a Rosemont duplex needs new ductwork for two floors, about 1,200 square feet, with six supply runs and two returns. The contractor holds a valid RBQ licence, carries CNESST coverage and issues a French contract. Two installers, three days.

These figures are illustrative, not a Montreal market rate. Substitute your own labour rate, material cost and overhead allocation. The structure is what matters.

An unlicensed operator may quote the same job lower, and the customer carries the risk. A licensed price reflects the cost of doing it legally in Quebec. Tax treatment matters too: ductwork on an existing residential building is generally subject to QST, which Revenu Québec administers, while new construction can differ.

Change the job slightly and the number moves. Add a third return, a longer run through a finished ceiling, or a weekend callout, and both labour and overhead rise. Price the change before the work starts, not after the drywall closes.

Set payment stages that match the schedule: a deposit on signature, a progress draw when the rough-in passes inspection, and the balance on commissioning. Stages tied to milestones protect cash flow and give the customer a reason to sign the French change order quickly.

Common questions

Do I need an RBQ licence for ductwork in Montreal?

Yes, if the work falls under regulated construction categories. The RBQ issues the licence, and a Montreal permit does not replace it. Confirm your subcategory before you bid.

Can I sign an English-only ductwork contract in Quebec?

No. Bill 101 requires the French version first for a contract of adhesion. An English version can follow only with clear consent, and the French text governs.

How do I check a contractor's NEQ?

Search the Registre des entreprises du Québec (REQ), the province's public enterprise register, by legal name or by the ten-digit NEQ. Confirm the legal name, status and address, then cross-check the RBQ licence number against the register entry.

Does RBQ licensing change my ductwork prices?

It adds overhead: fees, training, insurance and French documentation. Those costs belong in your quotes, or you will underprice the job.