Complete and strategic guide: passing the RBQ 1.2 exam — Contractor of small buildings

1. What is the RBQ 1.2 licence and who needs it?

The RBQ 1.2 licence, Contractor of small buildings (Entrepreneur en bâtiments de petite taille), is the general-contractor subclass for residential and small commercial construction in Québec. Anyone who carries out or offers to carry out construction work for others on small buildings must hold an RBQ licence, and the guarantor (répondant) behind the licence must pass the RBQ qualification exam. This guide from Prof-RBQ.ca maps exactly what that exam covers.

2. Scope of the licence: what work does it authorize?

The 1.2 licence covers buildings that may be designed under Part 9 of the Construction Code — 3 storeys or less and a building area of 600 m² or less. That includes single-family houses, small apartment buildings, and small commercial or mixed-use buildings. The trade fields run from excavation and foundations, through wood-frame structure, envelope, fire protection and mechanicals, to architectural components, renovation of existing buildings and energy efficiency. Structural engineering of large or high buildings, and work reserved to specialized licences, fall outside the 1.2 scope.

3. Format of the RBQ exam: what to expect

• Question type: multiple choice (QCM)
• Duration: 3 hours (180 minutes)
• Passing grade: 60 %
• Languages: French or English
• Assessed content: 55 competency elements and 213 skills, including calculation skills
• Cognitive level: from comprehension of the code to application on realistic building scenarios

4. Documentation at the exam: open book vs recommended reading

Documents provided at the exam (open book)

• Regulation respecting professional qualification (RQPECP) — B-1.1, r. 9: licences, subclasses and the guarantor.
• Construction Code, Chapter I — Building — B-1.1, r. 2, adopting the amended National Building Code (NBC) 2020.
• Regulation respecting the guarantee plan for new residential buildings — B-1.1, r. 8.

Recommended reading (know the content — not provided)

• Building Act — B-1.1: the objects of the Act, the RBQ and the licence system.
• Safety Code for the construction industry (CSTC) — S-2.1, r. 4: worker health and safety on site.
• Safety Code (RBQ) — B-1.1, r. 3: keeping buildings and equipment in good condition.
• Sustainable Development Act — D-8.1.1: the 16 principles behind the energy and environmental rules.

5. The 10 modules of competency

Prof-RBQ.ca organizes the 55 competency elements into 10 modules and 28 lessons:

Module 1 — Legislative, normative and regulatory framework

The Building Act, the RBQ, the Construction and Safety Codes, and the RQPECP qualification system.

Module 2 — Building design

Reading the objective-based code, classification, areas and spaces, accessibility and sanitation.

Module 3 — Excavation and building foundations

Excavation, backfill, water management, footings, foundation walls and soil-gas (radon) protection.

Module 4 — Building structure

Loads, deflection, wood-frame strength, notching and drilling limits, and structural execution.

Module 5 — Building envelope

Heat, air and moisture control, vapour barriers, attic venting and envelope execution.

Module 6 — Fire protection and means of escape

Fire-resistance ratings, sprinklers, compartmentalization, limiting distance, egress and alarms.

Module 7 — Building mechanicals

Ventilation, depressurization, HVAC and the electrical and mechanical fields of a small building.

Module 8 — Architectural and functional components

Stairs, ramps, handrails, guards, doors and windows, partitions and interior finishes.

Module 9 — Renovation, restoration and conversion

Part 10 for existing buildings, major vs minor alterations, and heritage restoration.

Module 10 — Sustainable development

Energy efficiency (Part 9.36), the Sustainable Development Act, and environmental protection on the jobsite.

6. Key skills and technical requirements (official context)

Reading an objective-based Construction Code

The exam does not test rote memorization; it tests whether you can find and apply the right article of Chapter I (amended NBC 2020). You must know the structure — Division A (definitions, objectives), Division B (acceptable solutions), Division C — and the Part 9 gateway (3 storeys, 600 m²) that decides whether a building is designed prescriptively.

Structural calculations for wood framing

Expect to compute a specified snow load with S = Cb × Ss + Sr, check joist deflection against L/360, and verify notching and drilling limits (for example, a stud must keep two thirds of its depth). These calculation skills are where many candidates lose marks.

Building science of the envelope

You must place the four control layers correctly — rain, air, vapour and thermal — and know that the vapour barrier goes on the warm side with a permeance of 60 ng/(Pa·s·m²) or less, and that roof spaces are vented at a minimum ratio of 1/300 (Part 9.25 / 9.19).

Fire protection and spatial separation

The exam probes fire-resistance ratings, required exits and travel distances, and the way limiting distance to the property line governs the allowable area of unprotected openings (Table 9.10.14.4).

Energy efficiency and thermal bridging

Section 9.36 requires a minimum effective thermal resistance that accounts for thermal bridging through the studs. Understanding why continuous exterior insulation raises the effective RSI more than the same value in the cavity is exactly the kind of applied reasoning the exam rewards.

Renovation and the existing-building lens

Part 10 scales the requirement to the work: maintenance and repair, minor alteration, major alteration, or change of occupancy. Heritage buildings add a second layer under the Cultural Heritage Act (P-9.002).

7. Preparation strategy and tips to succeed

Prepare module by module: for each rule, learn the code article behind it, not just the number. Drill the calculations until the formulas are automatic, and practise under the real conditions — 3 hours, 60 % to pass, multiple choice only. Because the exam is mixed-book, spend your effort learning where to find each open-book rule quickly, and memorizing the recommended-reading essentials. Prof-RBQ.ca lessons quote the exact articles so your practice maps directly onto the exam.

8. Why Prof-RBQ.ca

Prof-RBQ.ca is built around the real 1.2 competency profile: 28 structured lessons, nearly 200 anchored practice questions, a visual quiz on the key diagrams, and flashcards tied to the exact articles of the Construction Code and related Quebec laws. Every explanation cites its source, so you always know why an answer is correct — the fastest way to build exam confidence.

Frequently asked questions