Question about permits

[Nick Albin]

Me and my buddy were doing some work in his house this weekend. Mainly finishing the rest of his basement. He is turning it into a little work out place. He was thinking of buying an indoor sauna or he was thinking of buying a outdoor one and building a little area around it. He was wondering if he needed to have a permit or do anything special. Like if you have an in ground pool put in.

Just curious. Not my cup of tea, but figured you guys might know.