When you need a scaffold permit
Two questions decide this, and they are separate. Does the structure need a permit, and does it need to be designed by a registered design professional? A scaffold can be exempt from the permit and still need a sealed design if any exemption condition fails.
The short version
- Sidewalk shed. Permit always required, before erection. Designed by a registered design professional.
- Supported scaffold over 40 feet. Permit required. Sealed design required.
- Supported scaffold under 40 feet. No permit and no sealed design, provided all three exemption conditions hold.
- Outrigger scaffold. Permit and sealed design required at any height.
The three exemption conditions
All three must be true at once for a supported scaffold under 40 feet to stay exempt. Not an outrigger scaffold. No hoisting equipment rated above 2,000 pounds. Not loaded, or designed to be loaded, above 75 pounds per square foot.
Note that the third condition is about design intent as well as actual loading. A scaffold rated heavy duty at 75 pounds per square foot sits right at the boundary, and anything above it fails.
What being exempt does not mean
Exemption from a permit is not exemption from the Building Code. An unpermitted scaffold still has to be built correctly, braced, tied, maintained and inspected. It can still generate violations, and it still carries the same liability if it fails.
Key facts
- Sidewalk shed
- Permit always
- Supported scaffold
- Permit over 40 feet
- Outrigger scaffold
- Permit at any height
- Exemption conditions
- All three must hold
Common questions
Is a permit needed for a scaffold inside a building?
The permit thresholds turn on the scaffold itself rather than whether it is outdoors, so the same height and configuration tests apply. Interior work may raise separate requirements.
Who is responsible if a scaffold goes up without a required permit?
The contractor performing the work is generally the party cited, though owners can be brought in. Penalties, a stop work order, and a requirement to legalise or remove are the usual outcomes.