the county where I live lets you build 120 sq ft buildings without a permit. So people get pretty creative on how many and how close they build their 120 sq ft buildings. If you build them right you get two 120 sq ft buildings with a built in breezeway between them from the roof overhangs. Some properties have a dozen, twenty or more of these smallish buildings. Course having a bunch of small buildings doesn't do much for property value, but that's their choice.