Yikes
SAWHORSE
Picture a big box retail store that has large, room-like items on display, available for order/sale - - do the items require plan check in order to display them in their fully built condition inside the store? They may be taller than 5'-9", have doors that close, and prospective buyers can walk through/inside them; they may have a roof on them which would shed water from fire sprinklers, and the store's fire alarm strobes may not be visible while someone walks inside the display.
Let's assume for the moment that the store has provided all required circulation around the items, so they are not blocking the store's means of egress.
Here's the examples:
A children's playhouse:

A freestanding sauna:

A storage shed (again, picture this inside the big box retailer):

A luxury camping tent/yurt:

A few more thoughts for consideration:
Let's assume for the moment that the store has provided all required circulation around the items, so they are not blocking the store's means of egress.
Here's the examples:
A children's playhouse:

A freestanding sauna:

A storage shed (again, picture this inside the big box retailer):

A luxury camping tent/yurt:

A few more thoughts for consideration:
- None of them meet the IBC 202 definition of "building" because they are not utilized or intended for supporting or sheltering any occupancy. They are intended to visually entice a sale.
- They might fall under IBC 106.2.1 exceptions to permit for "one story detached accessory structures under 120 SF", except that they are inside another building (the big box retail store), so does that make them "attached"?
- In Los Angeles, LABC 106.2 exc. #6 exempts permits for "exhibits, booths, partitions and display counters for use not exceeding 30 days... and not exceeding 12' in height". But these will likely be on sales display longer than 30 days.