Are you planning to install an accessible ramp for people with disabilities at your home or in a commercial building? Whether you’re a homeowner, contractor, or architect, Quebec’s regulations are specific, and failing to follow them can result in costly repairs or accidents. This guide covers the essentials: maximum slope, minimum width, handrails, landings, and slip-resistant surfaces—all explained in plain language.
Key points to remember
- The maximum permitted slope is 1:12, meaning 12 cm in length for every centimeter of height to be climbed.
- According to the Quebec Building Code, the minimum width of a ramp is 914 mm (36 inches).
- A landing measuring 1,500 mm by 1,500 mm is required at every change of direction and for staircases longer than 9 meters.
- Handrails are required whenever the railing is more than 100 mm above the adjacent ground, with a minimum height of 900 mm.
- A non-slip surface is a requirement, not an option, especially given Quebec’s climate.
What is the maximum slope allowed for a wheelchair ramp in Quebec?
The slope is the key element of any standard for access ramps for people with people with disabilities. According to the Régie du bâtiment du Québec (RBQ), the maximum permitted slope is 1:12, which means that for every unit of height to be overcome, the ramp must cover 12 units of length. In practice, a 30-centimeter-high entrance requires a ramp of at least 360 centimeters.
These requirements are set forth in Section 3.8 of the Quebec Building Code, which is based on the 2020 National Building Code of Canada (as amended), and apply to both new construction and renovation projects.
A 1:12 slope is the minimum compliance threshold. For someone who uses a manual wheelchair independently, a gentler slope (1:16 or 1:20) significantly reduces effort and improves daily comfort. If space is limited, you may want to consider a platform lift.
| Gear ratio | Recommended use |
| 1:12 (8.3%) | Maximum permitted gradient, with assistance or motorized |
| 1:16 (6.25%) | Self-propelled manual wheelchair |
| 1:20 (5%) | Elderly people, walkers, heavy use |
How do you calculate the length of an accessible ramp?
Calculating the length of an accessible ramp for people with disabilities is a one-step process: multiply the height to be climbed by 12. A 15-centimeter elevation change requires a 180-centimeter ramp. For a 45 cm difference, allow for 540 cm. For a 60 cm difference, you’ll need at least 720 cm.
For straight runs longer than 9 meters, a horizontal landing is required before the next inclined section. At each change of direction, this landing must be at least 1,670 mm long and as wide as the ramp itself, to allow for safe turning and resting. These dimensions are governed by the Quebec Building Code.
What is the minimum width of a wheelchair ramp?
The Quebec Building Code sets the minimum width at 36 inches (914 mm). In commercial settings or areas with heavier traffic, a width of 48 inches or more is generally recommended.
This measurement is taken between the handrails or edges, not outside the structure. In residential settings, 914 mm is suitable for the vast majority of standard wheelchairs. In public spaces, a wider width allows two users to pass each other, which is often a requirement in itself.
What are the standards for guardrails and handrails?
According to Canadian accessibility standards, a handrail is required on each side whenever the difference in elevation between the ramp surface and the adjacent surface exceeds 100 mm. Its minimum height is 900 mm (36 inches), and increases to 1,070 mm (42 inches) if the drop height exceeds 1,800 mm. The balusters must be spaced so as to prevent the passage of a sphere with a diameter of 100 mm.
Handrails are required whenever a ramp rises more than 6 inches (150 mm). For wheelchair-accessible ramps, a second, lower handrail is recommended to provide support within reach of a seated person. According to the SAAQ’s home adaptation recommendations, the lower handrail is ideally positioned approximately 750 mm above the floor. 
When is it mandatory to install an access ramp?
The Quebec Building Code requires a ramp whenever an entrance has a height difference of more than 13 mm. This rule applies to commercial buildings, multi-unit residential buildings, healthcare facilities, and other buildings subject to the Code.
For existing single-family homes, the direct legal requirement is less stringent. However, installing an accessible system remains beneficial: it is often a prerequisite for accessing financial assistance available to people with disabilities. The Quebec government’s page on housing for people with disabilities lists the programs currently available.
| Location | Requirement |
| Commercial or public building | Ramp required if the elevation difference is > 13 mm |
| Residential Housing (New Construction) | Requirements of Section 3.8 of the Quebec Building Code |
| Existing single-family residence | Not required, but eligible for a grant |
| Major renovation work | Upgrades to meet standards are often required by the RBQ |
Common mistakes to avoid during installation
A slope that is too steep is by far the most common mistake: exceeding a 1:12 ratio makes the ramp non-compliant and dangerous, especially when going downhill. Next are missing or undersized landings, which prevent safe maneuvering in a wheelchair, and a slippery surface, which becomes a hazard as soon as the first frosts hit in Quebec.
An underestimated width can render the ramp unusable with certain power wheelchairs or scooters. And a handrail that is too low constitutes an immediate violation of RBQ regulations, in addition to posing a real safety hazard.
What to do now
Start by measuring the exact height you need to clear and the available space, then check with the RBQ to see if your situation is subject to the Code.
For a custom residential project, an occupational therapy consultation can help determine the layout that best suits the user. If you are seeking financial assistance, the Quebec government’s “Housing for People with Disabilities” page lists the programs currently available. For contractors and architects, Section 3.8 of the Code and the CSA/ASC B651 standard remain the primary technical references to consult.
A job well done means more battery life
Compliance with Quebec’s accessibility standards for people with disabilities means, above all, giving people with limited mobility the freedom to move around their homes without having to rely on someone else’s help every time they go out. Compliance protects the user. It also protects the property owner.
If you have questions about the best setup for your situation, the En Mouvement team can help you choose the right accessibility solutions.
Contact us to discuss the solutions available to you.
Frequently asked questions
Is a wheelchair ramp required in a private home in Quebec?
No, for an existing single-family home, the law does not require it. However, if major renovations are carried out, the Quebec Building Code may apply. A compliant installation also makes you eligible for government financial assistance.
What is the maximum permitted slope for a wheelchair ramp?
The maximum slope is 1:12 (approximately 8.3%), according to the RBQ. For a manual wheelchair user traveling alone, a gentler slope (1:16 or 1:20) is strongly recommended: it significantly reduces effort and fatigue on a daily basis.
How do I calculate the length of handrail I need?
Multiply the height of the step by 12 (1:12 ratio). A 40-centimeter height difference therefore requires a ramp that is at least 480 centimeters long. If space is limited, an L-shaped ramp with an intermediate landing is a compliant and often more practical solution.
Are guardrails always required on an access ramp?
They are required whenever the height difference between the ramp and the adjacent surface exceeds 100 mm, in accordance with Canadian accessibility standards. The minimum height is 900 mm, and increases to 1,070 mm if the drop height exceeds 1,800 mm.
What material is recommended for an outdoor ramp in Quebec?
Open-mesh aluminum is the best choice: it drains water and slush, resists corrosion, and remains slip-resistant in all seasons. Treated wood works too, but requires more frequent winter maintenance.
