Quick answer
Large tents, stages, bleachers and other temporary structures used by the public usually need a permit, and fire codes commonly require one for tents over about 400 square feet. Officials typically want a site plan, the tent or structure’s engineering for wind and anchorage, flame-resistance certificates for the fabric, and an exit and occupancy layout. Temporary structures are limited in how long they can stay up, commonly 180 days.
Event structures go up fast and come down fast, but wind does not care how long they stand. Most tent and stage failures come from inadequate anchorage, which is exactly what reviewers check.
What usually needs a permit
- Tents and membrane structures above the fire code size threshold
- Stages, platforms and lighting or sound towers
- Bleachers and grandstands
- Temporary buildings and large shade structures used by groups of people
What the engineering covers
- Wind design: the structure and its fabric for the site’s design wind, often with a stated wind speed at which the event must be evacuated or the tent taken down
- Anchorage: stakes for soil, or ballast weights for pavement, sized by calculation
- Stages and towers: deck loads, bracing and rigging loads
- Bleachers: seat and guard loads, and the surface they stand on
What fire officials check
- Flame-resistance certification for tent fabric
- Exit locations, widths and exit signs for the occupant load
- Separation from other structures, vehicles, generators and cooking
- Fire extinguishers and no-smoking signage
Plan ahead
Event permits often have fixed review lead times. Submit with complete engineering well before the event date, especially for festivals and recurring events where the same layout can be reused.
What to send us
- Tent or structure manufacturer, model and size
- Site address and surface type (grass, asphalt, concrete)
- Event layout and dates
- Any manufacturer engineering you already have
Common questions
Do I need a permit for a party tent?
Small tents and open canopies for private use often do not. Large tents, and tents used by the public, usually do. Check with your local fire department.
How do you anchor a tent on pavement?
With ballast, such as concrete blocks or water barrels, sized by calculation for the wind load. Drilling anchors into pavement is another option where allowed.
Can the tent manufacturer’s engineering be used?
Often as a starting point. Many jurisdictions still want site-specific anchorage calculations for your surface and wind speed.
How long can a temporary structure stay up?
Building codes commonly limit temporary structures to 180 days. Longer use requires permitting as a permanent structure.