Fort Regent has lost out on almost £40,000 because events have been cancelled for safety reasons.
Six have been pulled because capacity at the leisure centre has been capped at fewer than 1200 people.
A Freedom of Information request by Channel 103 has revealed the cancellations - which include a Human League concert and Jersey Sings - have cost £38,040 in lost revenue.
Performances have been moved to alternative locations.
Work is already underway upgrading emergency lighting, and more marshals have been brought in to ensure the Fort can operate safely.
The government says it eventually wants the Fort to be able to host events with a capacity of 2,000 people.
The bill for the level of work needed to meet that standard is expected to be revealed by the end of June.

Phone robber jailed after targeting a 'lone' woman
Channel Islands' parliamentary Standards Commissioner resigns
Island Energy charged over Mont Pinel gas explosion
Jersey airport to open early due to broken scanner
Critically endangered species of lemur joins Jersey Zoo
Lido to 'pause trading' amid ongoing uncertainly
Ports of Jersey applies to remove Gorey Pier landing stage
Jersey's police officers to be held to new standards
Comments
Add a comment