Welcome to Tiny Homes, an idea that is more popular with minimalists than with neighborhood associations and zoning boards. We'll point out the fun parts. You'll have to check out the logistics and legalities - but this one's probably older than some of the ordinances.
Even a 3,857 square foot lot can have a little of "A River Runs Through It", though in the case of this 610 square foot tiny house from 1938, it's more like "A Creek Wanders By It". In North Beach is a 1 bedroom, 1 bath bungalow with a lot that is much more expressive than some rectangle of grass. Rather than hiding the creek, they built a tiny footbridge across it, and worked the landscape into the living space with a large, well-thought out patio. The rest of the property is landscaped, nothing formal, but definitely tended. They're asking $389,000 which gets you a house that is block-ish and flat-roofed that it looks modern despite being 77 years old. Natural outside, simple inside with big windows and skylights to tie the two together - it would be interesting to know if it all came together from professional designers, or decades of refinement.