They were called sheds when I grew up.
Just had a 600sqft home bout 4 miles from me on 1acre lot sold for $267,000.00.
That would be a hunting or fishing camp to most.
Where I come from, they were called "shacks."
Shantytown was full of 'em!
Regards,
My husband, daughter and son-in-law built a tiny house in our back yard, and then we hauled it down to AR where we already own a large amount of wooded land. We (wisely) hired an electrician to wire it, and I did the plumbing. Once it was in place, they built a large deck around 2 sides, and that is where we spend most of our time. That was back in 2014-2015.
It cost around around $14K to build, and it includes one loft for each couple, a toilet, shower, sink, and propane stove.
Since the build, we added solar for electricity, and an outdoor water tank which we fill from our nearest neighbor’s well. Heating is provided by a ‘Mister Heater Buddy’ and cooling is by fans, or going outside. Refrigeration is an ice box out on the deck.
But yeah, it is basically a glorified hunting/fishing camp.