Gargantuan sheds should be less common inside St. John's, following a council decision that puts limits on how big the structures can be.

New regulations passed at Monday's meeting include a rule that no shed can take up more than 35 per cent of a backyard.

As well, sheds cannot be any more than 3.5 metres in height.

Coun. Tom Hann said council has been concerned about a number of problems, from the shadows that large sheds cast to fire safety.

"In other words, larger buildings expose neighbourhood properties to the spread of fire," Hann said.

"[With] the ability to fight a fire in a larger building, there is an accessibility issue getting into the backyards."

St. John's is following similar regulations already in place in neighbouring Mount Pearl and Paradise.